美国Valore R. C. 等人研究了用高效减水剂配制粉煤灰混凝土,并用以预制混凝土制品。他们试验了两种粉煤灰、五种高效减水剂。分别采用石灰水养护、常压蒸汽养护和压蒸养护。试验结果表明:不掺粉煤灰的富配合比(水泥用量440～455公斤/米~3)的混凝土,在石灰水中养护时,初期强度很高,12小时达252～322公斤/厘米~2,28天达479～539公斤/厘米~2;贫配合比(水泥用量320公斤/ Valor R. C. et al. studied the preparation of fly ash concrete with high-efficiency water-reducing agent and used it to pre-cast concrete products. They tested two fly ash and five superplasticizers. Lime water conservation, atmospheric pressure steam curing and pressure steaming curing are respectively adopted. The test results show that the concrete with no fly ash rich mix ratio (cement content 440-455 kg/m~3) has high initial strength when it is cured in lime water and reaches 252-322 kg/cm~2 in 12 hours. , 28 days up to 479 ~ 539 kg / cm ~ 2; poor mix ratio (cement dosage 320 kg /