Abstract: As industrial solid waste,fly ash is of potential activity.When excited by alkali,it can be changed into cementing material.By analyzing the effect of volcanic ash on fly ash concrete,we can determine the most reasonable fly ash content and exceeding quantity coefficient according to materials used in concrete.So we can use the activity of fly ash to the full.At the same time,concrete can have the best properties for pavement and have the best benefits of economy and environment

Key words: fly ash, volcanic ash effect, numerical analyzing, the most reasonable fly ash content, exceeding quantity coefficient

摘要： 粉煤灰作为固体工业废料，具有潜在活性，在碱激发作用下，能生成具有胶凝性能的物质。作者通过对掺 粉煤灰砼火山灰效应的数值分析，确定了与所用材料相适应的粉煤灰最佳掺量和超量系数，最大限度地利用粉煤 灰的活性，达到最佳的砼路用性能及最好的经济和环境效益。

关键词: 粉煤灰, 火山灰效应, 数值分析, 最佳掺量, 超量系数