Patent ID: 7901505
Filing Date: 2011-03-08
Classification: C04B,Y02W,Y10S

Abstract:
1. A composition comprising fly ash or another combustible ash that reduces or eliminates the effect the fly ash or the other combustible ash has on air entrainment in an air-entraining cementitious mixture comprising the fly ash or the other combustible ash and an air-entraining agent, the composition comprising fly ash or another combustible ash and a sacrificial agent, the sacrificial agent present in at least an amount necessary to neutralize the detrimental effects of components of the fly ash or the other combustible ash on air entrainment activity in the air-entraining cementitious mixture, the sacrificial agent comprising a material or mixture of materials that, when present in a cementitious mixture without fly ash or another combustible ash in said amount causes less than 2 vol. % additional air content in the cementitious mixture, wherein the sacrificial agent comprises an organic compound, with the proviso that the sacrificial agent does not comprise polyethylene glycol (PEG) or aromatic compounds having carboxylic acid groups, or salts thereof.