“粉煤灰在混凝土和砂浆中应用技术规程”)JGJ28～89)中规定,Ⅲ级粉煤灰主要用于无筋混凝土和砂浆,其中以砂浆效应较佳。砂浆掺入粉煤灰后的强度效应的好坏,又与配制砂浆的原材料、配合比和粉煤灰质量优劣密切相关。本文仅就贵阳电厂湿排原状灰Ⅲ级粉煤灰掺入贵州地区山砂砂浆中进行强度效应的探索,现将试验结果介绍如下: “Technical Regulations for the Application of Fly Ash in Concrete and Mortar” (JGJ28~89) stipulates that Class III fly ash is mainly used for unreinforced concrete and mortar, and mortar effect is better. The strength effect of mortar after incorporation into fly ash is closely related to the raw material, mix ratio and quality of fly ash. This article only explores the strength effect of the Guiyang Power Plant’s wet ash III fly ash incorporation into the grit mortar in the Guizhou region. The test results are now described as follows: