七十年初,粉煤灰作为一种廉价掺合料,经过长期的理论研究和工程实践,在混凝土工程中的应用范围愈来愈广,已成为混凝土配合的施工材料。特别是,“双掺”技术推出以后更进一步提高了粉煤灰的实用效应。即:选用一种优质粉煤灰,和某种能适应其理化需要的外加剂品种,可以对粉 In the early seventies, as a cheap admixture, fly ash has become a concrete material for construction after long-term theoretical research and engineering practice. In particular, the practical effect of fly ash has been further enhanced by the introduction of “double doped” technology. Namely: the choice of a high-quality fly ash, and some can adapt to the physical and chemical needs of admixture varieties, you can powder