近些年随着混凝土中粉煤灰掺量的提高、应用面的扩大,其整体使用量也逐年递增,出现了一些鱼目混珠的假粉煤灰。另一方面由于国家环保要求的日臻提高,对于废气排放标准有了更严格的要求。为了达到废气排放的环保指标,对排放的废气处理,这样的变化引起了粉煤灰成分的较大变化。掌握目前粉煤灰的各种特点和性能,合理科学的利用粉煤灰将对混凝土生产质量和经济效益产生积极影响。 In recent years, with the increase of fly ash content in concrete, the application of surface expansion, the overall use is also increasing year by year, there have been some fake fly ash head. On the other hand, due to the increasing national environmental protection requirements, the emission standards have more stringent requirements. In order to achieve the environmental indicators of exhaust emissions, emissions of exhaust treatment, such changes caused by the larger changes in the composition of fly ash. Grasp the various characteristics and performance of fly ash, reasonable and scientific use of fly ash will have a positive impact on the quality of concrete production and economic benefits.