我国火力发电厂湿排粉煤灰量约占排灰量的90%,如何使非成品湿灰用于建筑工程,对此,我们作了较长时间的试验研究和工程实践,证明山砂混凝土中掺用湿灰,可起弥补山砂颗粒表面粗糙、棱角尖锐影响混凝土和易性的缺陷,特别对低标号混凝土的和易性有明显改善作用;振捣易出浆,可提高混凝土的密度和强度;施工简便;经济效益显著。一、湿排灰细度的选择多数湿灰细度偏粗。而掺于混凝土中的粉煤灰,细度指标是关键。它直接涉及到颗粒形态、混凝土用水量、活性成份、烧失量以及混凝土的强度发展和耐久性等问题。如果将湿灰烘干磨细,使用 China’s coal-fired power plants account for about 90% of wet ash emissions, and how non-finished wet ash is used in construction projects. We have conducted a long period of experimental research and engineering practices to prove that the sand and sand concrete The use of wet ash can make up for the defects of coarse surface roughness and sharp edges and corners that affect the workability of concrete, especially for the workability of low-grade concrete. The vibrators can be easily discharged and can increase the density of the concrete. And strength; construction is simple; significant economic benefits. First, the selection of wet ash fineness Most wet ash fineness is coarse. However, the fineness index is the key to the fly ash blended into the concrete. It is directly related to particle morphology, water consumption of concrete, active ingredients, loss on ignition, and strength development and durability of concrete. If wet ash is dried, use