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粉煤灰的应用早在20年代就开始进行研究。近年来将粉煤灰用作水泥混凝土的掺合料,能够改善水泥混凝土性能,提高混凝土强度,减少环境污染,降低能耗,节省水泥用量,降低建筑造价,因此日益被人们重视,并正在逐步推广应用,收益甚大。粉煤灰是煤粉在火力发电厂煤粉炉中燃烧后,经收尘器收集下来的细灰。其颗粒具有空心和蜂窝状的构造,重量较轻,一般比水泥轻1/3左右。
The application of fly ash began as early as the 1920s. In recent years, fly ash has been used as an admixture for cement concrete, which can improve the performance of cement concrete, increase the strength of concrete, reduce environmental pollution, reduce energy consumption, save cement consumption, and reduce construction costs. Therefore, it is increasingly being taken seriously and gradually Promote and apply, the income is very big. Fly ash is the fine ash collected by the dust collector after the coal powder is burned in a coal-fired power plant of a thermal power plant. Its granules have a hollow and honeycomb structure, light weight, and generally about 1/3 lighter than cement.