Mortar mixes comprising as a major part, Class F fly ash and fluidized bed combustion ash in amounts and proportions sufficient to reduce the negative effects of the presence of unburned carbon in the Class F fly ash and the presence of sulfate in the fluidized bed combustion ash and which mortar mixes...http://www.google.fr/patents/US6277189?utm_source=gb-gplus-shareBrevet US6277189 - Coal combustion by-products-based lightweight structural materials and processes for making them
Coal combustion by-products-based lightweight structural materials and ...
