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对于粉煤灰的研究、开发、利用巳有七十多年的历史了,通过长时间的实践,发现粉煤灰主要是通过三种方式影响混凝土的,即减少混凝土的需水量;在给定坍落度时增加混凝土中浆体体积;提高火山灰效应。普遍认为粉煤灰掺入混凝土能改善混凝土的一些性能,如增加密实度、提高抗渗性、减少水化热等,同时,粉煤灰作为废物,能用于
The research, development, and utilization of fly ash have had a history of more than 70 years. Through long practice, it has been found that fly ash mainly affects concrete in three ways, that is, reducing the water demand of concrete; Increase slurries volume in concrete during slump; increase pozzolanic effect. It is generally believed that the incorporation of fly ash into concrete can improve some properties of the concrete, such as increasing the degree of compaction, improving impermeability, reducing the heat of hydration, etc. At the same time, fly ash can be used as a waste material.