CN102365346B - Method and composition for modifying soil and dust control - Google Patents

Method and composition for modifying soil and dust control Download PDF

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Publication number
CN102365346B
CN102365346B CN201080013973.9A CN201080013973A CN102365346B CN 102365346 B CN102365346 B CN 102365346B CN 201080013973 A CN201080013973 A CN 201080013973A CN 102365346 B CN102365346 B CN 102365346B
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soil
synthetics
water
polyvinyl acetate
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CN102365346A (en
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罗伯特·W··瓦伊塔尔
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Midwest Industrial Supply Inc
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Midwest Industrial Supply Inc
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
    • C09K17/18—Prepolymers; Macromolecular compounds
    • C09K17/20—Vinyl polymers
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2103/00—Civil engineering use

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Road Paving Structures (AREA)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

A composition for chemical improvement of soil and road base materials including an aqueous solution of a water repellant and an aqueous emulsion of a soil stabilizer and dust retardant is herein disclosed.

Description

The method of soil treatment and dust control is with synthetic
the cross reference of related application
Present patent application requires the U.S. Provisional Patent Application NO.61/165 submitting for approval on March 31st, 2009,235 right of priority, spy is incorporated herein its full content as a reference, present patent application also requires the U.S. Provisional Patent Application NO.61/169 submitting for approval on April 14th, 2009,041, and on March 1st, 2010 the U.S. Provisional Patent Application NO.61/309 that submits for approval, 223 right of priority, is specially incorporated herein its full content as a reference.
Technical field
The present invention usually relates to method and synthetics, and it can improve by the way of enabling environment intensity and the life-span of Class II highway; Be particularly related to and can improve dust inhibition, soil stability and repellency.
Background technology
Class II highway (after this claims " macadam ", " muddy and ruthed lane " or " not laying road ") design and build and be subject to the puzzlement of two interrelated problems always: the road causing due to water damages, and the surperficial cohesion causing because of traffic reason and the loss of Road Compaction degree.Especially harmful effect of Shui Dui highway is described later in detail in technology before.In cold climate, the moisture of infiltration roadbed is frozen and pull slight crack at roadbed bottom, the carrying capacity of havoc road and life-span.Equally, under gentle weather, cause softening and corrode when water infiltrates roadbed, the pothole forming is a costliness and problem repeatedly.If pothole does not obtain Immediate reconstruction, will ponding and further aggravate the damage of highway.
Water for example, to Class II highway (country road; branch road, field and woods road, or hill path) impact be specifically proposed; be because the mass ratio of its ground surface material uses the road quality of laying such as petrolize low, thereby the ability that protection road surface is not affected by these factors is also lower.In addition, due to capillary action, water also can be from the side of roadbed and bottom or road base infiltration roadbed.With rely on big machinery pour into concrete or laying and through grating taking pitch as basic sealing or compared with the road of " layings ", the secondary not construction on causeway road is relatively easy and cheaply.But causeway road needs to safeguard more frequently (especially in the situation that meeting the water phase or run into volume of traffic increase), and the general easy impossible problem of laying road that runs into other.
For example, what many Class II highways (earth or granular-type road) used is local soil, conventionally also uses together the rubble of local exploitation, sets up stratum basale and the base course of road.But it's a pity, local soil and rubble quality are often not suitable, cause the physics of roadbed and the reduction of mechanical attributes.Build when Class II highway uses poor roadbed material, conventional maintenance can not strict implement, and road is again in the situation in high humidity and/or the high volume of traffic, due to road surface, and the damage of stratum basale and roadbed material, and accelerated the erosion of road.
The defect of pavement of road is often divided into two large classes: road wear and surface deformation.Road wear is mainly relevant to the reactive mode of weather or traffic pressure with quality and the material of ground surface material, and surface deformation is usually due to some composite factor, it comprises the pressure that bears on road surface itself and the other side such as supporting capacity and stability such as stratum basale and roadbed.
Road wear can " dust " be example, is the result of the meticulous bond material loss in road surface.Dust is a significant problem of Class II highway, damages for example cohesion of road packing material and the loss of compactness, and the reduction that keeps the ability of necessary humidity in road is filled because these fine materials of loss cause the road of other type.
Surface deformation comprises rut, wrinkle, depression and pit.Rut is because humidity is high, and the lower soil in surface or subgrade strength deficiency, skin depth deficiency or heavy traffic load and the longitudinal depression on wheel trajectories that causes.Wrinkle or " washing board " are to cause a series of protuberance in road surface and depression because road surface cohesion is not enough.Depression is because sedimentation, humidity are excessive, and/or unsuitable draining and cause local than around road surface low one inch or more.Pit is some inch or darker little depression or the hole forming on road surface, be because humidity is excessive, impeded drainage, roadbed bottom or roadbed is insecure, grating pellet is not good, or the mixing of above-mentioned these factors.
Therefore, these problems of road wear and distortion are conventionally relevant to Class II highway, the reason of its formation is: the 1) harmful effect of water and high humidity, comprise sedimentation and the erosion of road surface and roadbed, 2) cohesion causing due to dust lacks and the loss of Road Compaction degree, and 3) there is the road carrying heavy traffic load of insecure or not enough soil, stratum basale or roadbed.
The method that has proposed in the industry to add different chemical additive increases the repellency of pavement material, and its effect and environmental influence are had nothing in common with each other.But repellency chemical material is not ramming material, and make an addition to carrying capacity and the stability of not improving road after soil or roadbed.In a lot of situations, on macadam, applied chemistry is added composition and can be reduced dust (being commonly called the technology of " dust-inhibitor " or " dust-proofing agent "), improves the cohesion of fine aggregate by absorb the mode of moisture from air." soil stabilizer " is a kind of chemical substance combining for the connecting key that makes soil as ramming material or gather materials between particulate in addition, and it provides sound assurance to greatly improving road load supporting capacity and traffic capacity.But existing soil stabilizer and dust-proofing agent are difficult to use at cold weather, often set time long, life cycle is short, and cannot provide necessary protection for the destruction of water; Especially true in excessive the caused capillary problem of humidity.
Therefore, a kind of single synthetics of having the ability to address the above problem---it can provide repellency to reduce humidity, provide dust reduction capability to improve road surface force of cohesion, and provide soil stabilizer to improve load carrying power and traffic capacity---will there is great purposes in technical field; Especially true when if this synthetics can be applied in the mode of economy and environmental protection.Although Road construction person adopts soil additive as a kind of approach that prevents road wear and distortion for a long time, but make a kind of formula of synthetics, and the method for using this chemical additive to have cost-benefit mode is proved to be difficulty all the time.Particularly, although provide various chemical materials in order in conjunction with roadbed material, to gain in strength and load bearing capacity, and road surface scold water, but the solution that these effort so far all do not have the Class II highway that a kind of environmental protection can be provided to corrode and safeguard, this problem has become the long-term puzzlement of this technology.Therefore, the synthetics of a kind of improvement of this Technology Need, can provide the load bearing capacity of special reinforcement, and outstanding dirt exclusion capabilities outstanding is scolded water characteristic, and can implement at the applying step with independent.This improvement synthetics can cover for muddy and ruthed lane or macadam provide the repellency roadbed of an engineering stability and road surface; Or, can be crushed stone sealing, laying or milling these road base of application preparation or roadbeds.
Damaging road with traditional method reparation may be very expensive, consuming time, and welding, because the metalling of the whole compacting of road all will be changed again.Dig out the roadbed of one section of 1 kilometer of long 4 meters of broad way section, can produce the native stone rubbish of 2000 cubic metres (m3); In a traditional roadbed items of repair job, this clears up the inferior rubbish of about 220 trucies by needs and goes out construction site, and separately has the inferior new rubble of 220 trucies to be transported to working-yard to complete whole project.In remote place, or the place of landform difficulty, cleaning and to replace the expense of rubble be very expensive---on local resident's impact very large (they will stand construction noise and atmospheric pollution) too, the affected common user (will detour or stand delay during repairing) who also has highway, and the refuse landfill of depositing and removing construction rubbish.
Therefore, this Technology Need one single step chemical treatment method, it can mix in local soil can stable soil, dust suppression and scold the chemical substance of water.By this single step processing, Road construction person can improve the life-span of road, increase load carrying power and traffic capacity, and reduce the time, expenditure and the environmental influence that come with traditional road maintenance project.
Summary of the invention
Accordingly, objects and advantages of the present invention are to provide a kind of single synthetics to improve soil or roadbed material, and it can make local soil or other roadbed material have very outstanding dust control, soil stabilization and scold the characteristic of water.
In addition, the invention provides a kind of method, process soil or roadbed material for single step, it can reduce set time, reducing the constructing road time, reduce the impact (by reducing building waste and traffic) on environment, is that road has wider effective use temperature, longer life cycle, and more firmly more dust suppression.
For person skilled in the art, through reading and understanding following embodiment, other benefit and advantage will be apparent.
brief Description Of Drawings
The present invention has at least an embodiment to illustrate in the following description and shows in the accompanying drawings, and special and point out highlightedly and illustrate at appending claims.
Fig. 1 is a pulvimixer;
Fig. 2 is the side-view of pulvimixer, and wherein soil and roadbed material are being beaten pine, sprayed, and are sneaked into synthetics of the present invention.
Fig. 3 is the skeleton view of pulvimixer;
Fig. 4 is the chart that shows the impact of additive on dry strength;
Fig. 5 is the chart that shows dry strength; And
Fig. 6 is the chart that shows wet tenacity.
Embodiment
In one embodiment of the invention, provide a kind of synthetics, to improve the characteristic of soil or other roadbed material.Particularly, a kind of mixture of chemical composition as described below, its can improve soil or other roadbed material dust suppression, scold the stable characteristic of water and soil.In soil or other roadbed material, synthesize chemical modifying composition, then compacting, load carrying power (in situation about having up to 500%) by improving road is to reach the superpower defensive ability/resistance ability of road pavement distortion and wearing and tearing, a large amount of reduce the dust causing due to traffic or weather, and eliminate the infringement of the humidity to road that the moisture that absorbs because of capillary action causes.The present invention is the improvement to traditional method, because it provides a kind of synthetics, it can be applied to single implementation step under a wide range of temperature and condition, in order to solve in all the problems referred to above in the art.
This synthetics is for the chemical modifying of soil or roadbed material, by a kind of repellency aqueous solution the water miscible liquid of soil stabilizer and dust-inhibitor form.In one embodiment of the invention, the feature of improving the component of soil or roadbed material characteristic for chemistry can comprise: a kind of repellency aqueous solution, comprising the potassium hydroxide (potassium hydroxide) of approximately 1% to approximately 5% weight (including, but not limited to 1,2,3,4 and 5); The methyl silanol potassium (potassium methylsiliconate) of approximately 10.0% to approximately 30.0% weight (including, but not limited to 10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29 and 30); With the water of approximately 65.0% to 89.0% weight, (including, but not limited to 65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88 and 89).In another embodiment of the present invention, the repellency aqueous solution contains about 10.0% methyl silicon sodium alcoholate to about 30.0% weight (including, but not limited to 10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29 and 30) (sodium methylsiliconate), in order to replace above-mentioned methyl silanol potassium (potassium methylsiliconate).
In one embodiment of the invention, described synthetics, in order to chemical modifying soil or roadbed material, the composition that it can comprise a kind of dust suppression and/or soil stabilization, is a kind of water-based emulsion, containing having an appointment 5.0% to 60.0% weight (including, but not limited to 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59 and 60) polyacrylic acid (polyacrylic acid) and polyvinyl acetate (PVA) (polyvinyl acetate), and 40.0% to 95.0% weight (including, but not limited to 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 and 90) water.Should be appreciated that the present embodiment can contain vinylformic acid (straight acrylic), polyvinyl acetate (PVA) (polyvinyl acetate) or a kind of styrene-butadiene rubber(SBR) (styrene butadiene rubber), be mixture, multipolymer or homopolymer.
In another embodiment of the present invention, described synthetics can chemical modifying soil or roadbed material, and it can comprise polyacrylic acid (polyacrylic acid) and the polyvinyl acetate polymer (polyvinyl acetate polymer) of approximately 2.5% to approximately 30.0% weight (including, but not limited to 2.5,2.6,2.7,2.8,2.9,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29 and 30); About .5% is to the potassium hydroxide (potassium hydroxide) of (including, but not limited to 0.5,0.6,0.7,0.8,0.9,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,2.0,2.1,2.2,2.3,2.4 and 2.5) of approximately 2.5% weight; The methyl silanol potassium (potassium methylsiliconate) of (including, but not limited to 5,6,7,8,9,10,11,12,13,14 and 15) of approximately 5.0% to approximately 15.0% weight; And the water of (including, but not limited to 52.5,52.6,52.7,52.8,52.9,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91 and 92) of approximately 52.5% to approximately 92.0% weight.
In another embodiment of the present invention, described synthetics is in order to chemical modifying soil or roadbed material, it can comprise that approximately 3.75% to approximately 45.0% weight is (including, but not limited to 3.75, 3.76, 3.77, 3.78, 3.79, 3.8, 3.9, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44 and 45) polyacrylic acid (polyacrylic acid) and polyvinyl acetate polymer (polyvinyl acetate polymer), about .25% is to the potassium hydroxide (potassium hydroxide) of approximately 1.25% weight (including, but not limited to 0.25,0.26,0.27,0.28,0.29 .3 .4 .5 .6 .7 .8 .9,1.0,1.1,1.20,1.21,1.22,1.23,1.24 and 1.25), the methyl silanol potassium (potassium methylsiliconate) of approximately 2.5% to approximately 7.5% weight (including, but not limited to 2.5,2.6,2.7,2.8,2.9,3,4,5,6,7,7.1,7.2,7.3,7.4 and 7.5), approximately 46.25% to approximately 93.5% weight (including, but not limited to 46.25, 46.26, 46.27, 46.28, 46.29, 46.3, 46.4, 46.5, 46.6, 46.7, 46.8, 46.9, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93.0, 93.1, 93.2, 93.3, 93.4 and 93.5) water.
In another embodiment of the present invention, described synthetics is in order to improve soil or roadbed material, and it can comprise polyacrylic acid (polyacrylic acid) and the polyvinyl acetate polymer (polyvinyl acetate polymer) of approximately 1.25% to approximately 15.0% weight (including, but not limited to 1.25,1.26,1.27,1.28,1.29,1.3,1.4,1.5,1.6,1.7,1.8,1.9,2,3,4,5,6,7,8,9,10,11,12,13,14 and 15); About .75% is to the potassium hydroxide (potassium hydroxide) of approximately 3.75% weight (including, but not limited to 0.75,0.76,0.77,0.78,0.79 .8 .9,1,2,3,3.1,3.2,3.3,3.4,3.5,3.6,3.70,3.71,3.72,3.73,3.74 and 3.75); The methyl silanol potassium (potassium methylsiliconate) of approximately 7.5% to approximately 22.5% weight (including, but not limited to 7.5,7.6,7.7,7.8,7.9,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22.0,22.1,22.2,22.3,22.4 and 22.5); The water of approximately 58.75% to approximately 90.5% weight (including, but not limited to 58.75,58.76,58.77,58.78,58.79,58.8,58.9,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90.0,90.1,90.2,90.3,90.4 and 90.5).Should be appreciated that the present embodiment can contain mixture, multipolymer or the homopolymer of vinylformic acid, polyvinyl acetate (PVA), styrene-butadiene rubber(SBR) and phenylallene (styrene acrylics).
In another embodiment of the present invention, in synthetics, the part in order to dust suppression and/or soil stabilization also can contain a kind of emulsifying agent.In addition, in certain embodiments of the present invention, polyacrylic acid and/or polyvinyl acetate (PVA) can contain the mixing of homopolymer, maybe can form one or more multipolymer.Some embodiment may comprise styrene-butadiene rubber(SBR) and relevant synthetics, multipolymer and/or its derivative.Above-mentioned synthetics is by using traditional producing apparatus to produce.Use traditional stirrer, emulsor or colloid mill that said components is mixed into stable multiphase mixture or emulsion.
Described in embodiment, polyacrylic acid and/or polyvinyl acetate (PVA) composition contain homopolymer, and this homopolymer composition mass ratio can be that polyacrylic acid is from approximately 1: 1 to approximately 1: 10 than polyvinyl acetate (PVA), and 000; Or polyvinyl acetate (PVA) is from approximately 1: 1 to approximately 1: 10 than polyacrylic acid, 000.
As described embodiments, polyacrylic acid and/or polyvinyl acetate (PVA) composition contain one or more multipolymer, and this multipolymer can contain random copolymers, segmented copolymer, graft copolymer and the like or wherein combination arbitrarily.In addition, in a kind of multipolymer, the ratio of vinylformic acid dosage and vinyl acetate dosage can comprise, the mass ratio of acrylic acid dose ratio vinyl acetate dosage is from approximately 1: 1 to approximately 1: 10,000; Or the mass ratio of vinyl acetate dose ratio vinylformic acid dosage is from approximately 1: 1 to approximately 1: 10,000.
No matter embodiment contains homopolymer and/or multipolymer, and the integral part of every kind of polymkeric substance all can be explained with the molecular weight of wide scope and polymolecularity thereof.For example, suitable molecular weight ranges comprises from approximately 10 3to approximately 10 4gram/mol, from approximately 10 4to approximately 10 5gram/mol, from approximately 10 5to approximately 10 6gram/mol, from approximately 10 6to approximately 10 7gram/mol, from approximately 10 7to approximately 10 8gram/mol, from approximately 10 8to approximately 10 9gram/mol, or even from approximately 10 9to approximately 10 10gram/mol.Here the same with the elsewhere of specification sheets and claims, scope can combine.In addition, aforementioned molecular weight ranges can calculate according to any known method in this technique, includes, but are not limited to weight average molecular-weight average and the equal molecular-weight average of number.Be to be appreciated that a kind of polymericular weight can produce because of obstructed method of calculation different numerical value in this technique.
Synthetics as described in above-described embodiment, can comprise dust-inhibitor, soil stabilizer and/or repellency composition, for example, and its can be used to not pave (or soil, earth, dust, rubble or other traditional materials that gathers materials).This synthetics can reduce due to wind erosion cause or vehicle at the dust that does not pave and travel and produce.Other embodiment can selectively or extraly contain a kind of soil stabilizer composition, and it can increase California Bearing Ratio (CBR value) and the R value of soil or roadbed.In other embodiment, synthetics can selectively or extraly contain repellency composition, and it can be eliminated, or very big degree reduces the capillary moisture absorption of road surface, roadbed and stratum basale.Therefore, this synthetics can increase the supporting capacity that does not spread pavement of road, and prevents that it from suffering erosion, and prevents that it from absorbing moisture, or promotes the mechanical characteristics of the soil of using.
The certain methods of improvement soil or roadbed material is provided in several embodiments of the present invention.Various chemical embodiment as above, one of them embodiment provides a kind of heterogeneous mixing, and be applied to soil or roadbed material (being called afterwards " soil after treatment or roadbed material "), a kind of aqueous solution of water repellent, with the mixing of the water-based emulsion of a kind of soil stabilizer and dust-proofing agent.As what use in present patent application, " soil " word is widely used in describing the top layer on surface, soil, comprises stone and has mixed the mineral grain (indefiniteness is quoted, and is also considered to earth or dust) of organic substance; No matter whether be the original soil that is present in road construction place (" native soil " or " genetic soil ") or is transported to highway construction scene.As the phrase being used in present patent application " roadbed material ", be widely used in describing any material that can be used for building road surface, roadbed or stratum basale; Comprise but be obviously not limited to, indefiniteness is quoted, stone, rubble, sandstone (no matter roundstone, sand grains or other sizes or mix), sand, cobble, rock slag or other building aggregates or packing material.In these embodiments, treated material will carry out gradation before implementing.The earth that organic substance is high, in default of cohesiveness, therefore can cause difficulty realizing in the required reaction of soil water repellency.The mode of using chemical association composition can comprise the selected method of the reliable engineering judgement of any process; But as a rule, using chemical agent is by using traditional spray appliance (sprinkling truck) to complete.Medicament is to drop into or by pipe by gravity, nozzle, or fixing sprinker pumps, and be applied in equably on pending soil or material.
In some embodiments of the invention, by soil or roadbed material scarifying (breaking)---in the present embodiment, the degree of depth is about 4-6 inch (10.16 centimetres-15.24 centimetres)---use be traditional road construction motorized grader (motorized grader of especially subsidiary rake), and then use the synthetics for chemical modifying soil or roadbed material.The impact of this operation is to make synthetics to permeate to deeper degree and to diffuse in soil or roadbed material.Once synthetics is applied, just penetrate in soil or roadbed material, be attached to immediately particle surface by adsorption process, molecule, and absorb and infiltrate material enter into the internal structure of particle, thereby realized ballast and the load mechanism of particle.The water repellent part of synthetics produces and react with mineral substance in soil or roadbed material, and forms immediately a kind of silicone network of waterproof, the pore of material can not stopped up, but can allow road all right " breathing " in possessing the water of scolding characteristic.In this novel process, the evaporation that can produce moisture.In the time that moisture evaporates, the polymkeric substance of the propylene polymerization emulsion of water-based is combined with soil and is formed closely and connects.Water glass in water and potassium silicate utilize the cohesiveness of soil particle to form discontinuous water-proof silica-gel network.
In one embodiment of the invention, adopt the reliable engineering judgement of any warp and the method selected, by treated soil or roadbed material grating compacting, and use one deck synthetics and be covered in top.If needed, as described herein, can adopt power-driven grader, pitch shredder, stirrer, clay mill, packer, street roller and other may be used to the traditional architecture equipment of mixing, grating and stabilization by compaction roadbed.The definition of top overlay is extensively to refer to using of any soil after compacting or roadbed material chemical modifying synthetics.
In one embodiment, in step of applying, enter in soil or roadbed material and greatly improved penetration degree by mechanical stirring synthetics.Mechanical stirring process can include, but are not limited to, and (this pulvimixer comprises an engine that directly promotes profile of tooth rotor to the special machinery of use so-called " pulvimixer ", and the teeth of profile of tooth rotor are replaced while damage.In one embodiment, rotor is level, and turn round towards the reverse direction of mechanical movement with the rotating speed of 100 to 200 revolutions per, and in soil, dig 500 mm depths, be thoroughly stirred in connection with material (polymkeric substance of enhancing) in the clay or silt of composition soil.This technique can structurally be used soil).This pulvimixer is mechanically uniformly mixed synthetics and soil or roadbed material, by simultaneously: 1) scarifying soil or roadbed material, in the time completing this step with pulvimixer, can in stir chamber, break in addition (loosening the soil) bulk stone or road top layer; (2) use chemical modifying synthetics; (3) in the thorough soil in the pulverizing of loosening the soil or roadbed material, sneak into chemical modifying synthetics; (4) grating soil after treatment or roadbed material.Soil or roadbed material that this single application step method can be ready to process for grating and compacting road---present be thorough stirring, homogeneity, the good roadbed of grating.In some embodiments of the invention, also used a top overlay at soil or the roadbed material of mechanically mixing compacting.The program of road surface processing can comprise any Expressway Pavement Material combination using in this technique; Including, but not limited to, bituminous concrete and bitumeniferous treatment of road surfaces, for example crushed stone sealing.
Have effective amount of application of some embodiment to be, from about every cubic metre of soil, 1 liter (is 1L/m 3) to about 10L/m 3, from about 10L/m 3to 20L/m 3, from about 20L/m 3to 30L/m 3, from about 30L/m 3to 40L/m 3, from about 40L/m 3to 50L/m 3, from about 50L/m 3to 60L/m 3, from about 60L/m 3to 70L/m 3, from about 70L/m 3to 80L/m 3, from about 80L/m 3to 90L/m 3, from about 90L/m 3to 100L/m 3, or even exceed 100L/m 3.
Correctly use improvement soil and roadbed material synthetics in the present invention, particularly use method as above, can greatly improve the not load carrying intensity on causeway road, make it substantially can resist the damage impact that capillary absorption and water erosion cause, and can provide remarkable dust suppression characteristic, wider effectively use with Applicable temperature scope under, exceed any synthetics of the prior art.In addition, can be applied to local soil with one step in this description and alleged synthetics, and because shorten set time, the building time of highway be reduced, environmental influence also dwindles (by reduction construct rubbish and the volume of traffic), and life cycle is extended.
As Figure 4-Figure 6, used the Wingdale through good grating that the laboratory of standard mixes as the core of unconfined compression strength (UCS).The sample of the preparation unconfined compression strength core that is useful on has all adopted the laboratory operation of standard.All samples are dry through 48 hours at the temperature of 104 ℉ (219 DEG C) all.Dry unconfined compression strength core is broken after at room temperature 6 hours.Moist unconfined compression strength core soaked after 48 hours in room temperature tap water, took out then broken immediately from water.The unconfined compression strength core of standard normally diameter is 3 inches (7.62 centimetres) and the degree of depth that is depressed into 4 inches (10.16 centimetres).The rate of utilization of polymkeric substance (PBs) determines according to surface area.In these embodiments, Water Armour tM(water glass in a kind of water and potassium silicate solvent) is with 8L/m 3ratio be applied on all samples.As shown in Figure 4, pictorialization go out each interpolation composition, add separately or together the impact of the unconfined compression strength on gauged lime stone.Single Water Armour tMitself is negative to the effect of intensity that has the Wingdale of cohesiveness and mix.Add separately polymkeric substance and add polymkeric substance and Water Armour simultaneously tMobviously increase the numerical value of unconfined compression strength.
As shown in Figure 5, pictorializationly go out to add Water Armour tMto polymkeric substance, to being negligible to adding the intensity effect that polymkeric substance/Wingdale mixes.As shown in Figure 6, pictorializationly go out to add Water Armour tMthe wet strength that polymkeric substance/Wingdale is mixed has positive impact.It is at least 17% that test demonstrates the increase of wet strength.The chart that shows test-results below.
Table 1
SS-Soil Sement (a kind of vinyl acetate between to for plastic-acroleic acid polymerization emulsion of water-based) WA-Water Armour tM
Table 2
Test as shown in Tables 1 and 2, has also carried out the control test of only having water with every 10 square feet 1 gallon, and result is 1050.Meanwhile, with 8 liters of Water Armour tMthe control test result of carrying out is 166.
In one embodiment, vinyl acetate between to for plastic-acroleic acid polymerization emulsion and the soil of water-based are uniformly mixed.In a container, there are 3200 gallons of (12,113 liters) emulsions to be diluted by water with 11 to 1.The road of scarifying is all very dry in whole 6-8 inch (15.24 centimetres-20.32 centimetres) degree of depth.Emulsion is soaked into and is entered in material.While using another layer of tectum, emulsion wetting-out rate is slower.Second day, first paragraph looks fine.Rut prints almost be cannot see.The emulsion that amounts to 550 gallons (2082 liters) is applied to first paragraph, and this section is 40% solid.Second segment is 50% solid, is equally also 250 meters * 4.5 meters.50% this section has been used 605 gallons (2290 liters).
Next day, the 1st section and the 2nd section seem fine having born situation after slight traffic flow.Two sections are all showed at least some humidity, but keep fastening.The 3rd section has used emulsion and Water Armour simultaneously tM.This section is 100 meters * 4.5 meters, the degree of depth of 6 inches (15.24 centimetres).100 gallons of (376 liters) WaterArmour are approximately used tMsneak into the emulsion of 275 gallons (1041 liters), and water is full of the remainder of 3200 gallons of (12,113 liters) containers.This is applied on material.After being dried, use again the tectum of the second layer.Very consolidation show uniform white gloss of material.
Embodiment as above.Obviously for this insider, can in the case without departing from the gist of the present invention aforesaid method and equipment be changed and be revised.Only otherwise any amendment and the change that depart from the claims in the present invention or scope suitable with it are included.Although more than describe and comprise many specificitys, this can not be interpreted as to scope restriction of the present invention, just as the explanation that some existing embodiment of the present invention are provided.Various other embodiment and branch all can be within the scope of these.
In addition, although set far-ranging numerical range of the present invention and parameter setting is approximation, the report numerical value proposing in concrete case is all accurate as far as possible.But some error that any numerical value all exists itself, must cause producing standard deviation in its thermometrically separately.

Claims (20)

1. a synthetics, in order to chemical modifying soil and roadbed material, is characterized in that:
An aqueous solution for water repellent, the potassium hydroxide that contains 1.0% to 5.0% weight in the aqueous solution liquid of described water repellent, the methyl silanol potassium of 10.0% to 30.0% weight or methyl silicon sodium alcoholate, and the water of 65.0% to 89.0% weight; And
The water-based emulsion of a kind of soil stabilizer and dust-inhibitor, the polyacrylic acid that contains 5.0% to 60.0% weight in the water-based emulsion of described soil stabilizer and dust-inhibitor and polyvinyl acetate (PVA), the water of 40.0% to 95.5% weight, in the water-based emulsion of described soil stabilizer and dust-inhibitor, each component concentration sum is 100% weight.
2. synthetics according to claim 1, is characterized in that, the water-based emulsion of described soil stabilizer and dust-inhibitor is a kind of emulsifying agent.
3. synthetics according to claim 1, is characterized in that, the mixing that wherein polyacrylic acid and polyvinyl acetate (PVA) contain homopolymer.
4. synthetics according to claim 3, is characterized in that, the quality that wherein ratio of polyacrylic acid and polyvinyl acetate homopolymers can be expressed as polyvinyl acetate (PVA) on polyacrylic mass ratio is for from 1: 1 to 1: 10,000.
5. synthetics according to claim 3, is characterized in that, wherein the ratio of polyacrylic acid and polyvinyl acetate homopolymers can be expressed as on the mass ratio of polyvinyl acetate (PVA) polyacrylic quality for from 1: 1 to 1: 10,000.
6. synthetics according to claim 1, is characterized in that, the mixing that wherein polyacrylic acid and polyvinyl acetate (PVA) contain multipolymer.
7. synthetics according to claim 6, is characterized in that, wherein the multipolymer ratio of the dosage of polyacrylic dosage and polyvinyl acetate (PVA) is, on polyacrylic mass ratio, the quality of polyvinyl acetate (PVA) is from 1: 1 to 1: 10,000.
8. synthetics according to claim 6, is characterized in that, wherein the ratio of the multipolymer of the dosage of polyacrylic dosage and polyvinyl acetate (PVA) is, on the mass ratio of polyvinyl acetate (PVA), polyacrylic quality is from 1: 1 to 1: 10,000.
9. synthetics according to claim 6, is characterized in that, wherein in the mixing of the multipolymer of polyacrylic acid and polyvinyl acetate (PVA), contains styrene-butadiene rubber(SBR).
10. synthetics according to claim 1, is characterized in that, contains: 2.5% to 30.0% polyacrylic acid of weight and the polymkeric substance of polyvinyl acetate (PVA); The potassium hydroxide of 0.5% to 2.5% weight; The methyl silanol potassium of 5.0% to 15.0% weight; And the water of 52.5% to 92.0% weight.
11. syntheticss according to claim 1, is characterized in that, contain: 3.75% to 45.0% polyacrylic acid of weight and the polymkeric substance of polyvinyl acetate (PVA); The potassium hydroxide of 0.25% to 1.25% weight; The methyl silanol potassium of 2.5% to 7.5% weight; And the water of 46.25% to 93.5% weight.
12. syntheticss according to claim 1, is characterized in that, contain: the polyacrylic acid of 1.25% to 15.0% weight and polyvinyl acetate (PVA); The potassium hydroxide of 0.75% to 3.75% weight; The methyl silanol potassium of 7.5% to 22.5% weight; And the water of 58.75% to 90.5% weight.
Improve the method for soil or roadbed material for 13. 1 kinds, it is characterized in that, be divided into step:
(A) provide a kind of synthetics, it contains the aqueous solution of multiphase mixture by water repellent, and the water-based emulsion of soil stabilizer and dust-inhibitor composition; Wherein, the aqueous solution of water repellent liquid contains: the potassium hydroxide of 1.0% to 5.0% weight; The methyl silanol potassium of 10.0% to 30.0% weight or methyl silicon sodium alcoholate; And the water of 65.0% to 89.0% weight; The water-based emulsion of soil stabilizer and dust-inhibitor contains: the polyacrylic acid of 5.0% to 60.0% weight and polyvinyl acetate (PVA), and the water of 40.0% to 95.0% weight; In the water-based emulsion of described soil stabilizer and dust-inhibitor, each component concentration sum is 100% weight;
(B) synthetics is applied on soil or roadbed material; And
(C) allow synthetics be penetrated in soil or roadbed material.
14. methods according to claim 13, wherein step (B) is further characterized in that, it is by first becoming flexible soil or roadbed material use synthetics on soil or roadbed material before.
15. methods according to claim 14, it is further characterized in that, step: (D) the treated soil of grating compacting or roadbed material.
16. methods according to claim 15, it is further characterized in that, step: (E) use synthetics in the tectum of top layer.
17. methods according to claim 13, wherein step (B) is further characterized in that, is mechanically synthetics to be sneaked into soil or roadbed material.
18. methods according to claim 17, it is further characterized in that, step: (D) the treated soil of compacting or roadbed material.
19. methods according to claim 18, further feature is to pass through step: (E) use synthetics in the tectum of top layer.
20. methods according to claim 19, being wherein further characterized in that of step (E), is by first soil or roadbed material being used to the processing of one-time surface layer using synthetics before top overlay.
CN201080013973.9A 2009-03-31 2010-03-25 Method and composition for modifying soil and dust control Expired - Fee Related CN102365346B (en)

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US12/729,683 US8033750B2 (en) 2009-03-31 2010-03-23 Method and composition for modifying soil and dust control
US12/729,683 2010-03-23
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