Patent ID: 7892350

Claim:
An air-entraining cementitious mixture comprising fly ash or another combustible ash that reduces or eliminates the effect the fly ash or other combustible ash has on air entrainment in the air-entraining cementitious mixture; the air-entraining cementitious mixture comprising air, water, cement, fly ash, an air entrainment agent and a sacrificial agent, wherein the sacrificial agent is 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.