粉煤灰对沙质土壤物理特性的影响

为探讨粉煤灰作为沙质土壤改良剂对沙土物理特性的改良效果.通过室内模拟试验比较了粉煤灰不同施用率(0%,10%,20%,30%,40%)对沙质土壤物理性质和结构的影响.结果表明,施用粉煤灰能增大沙土容重,降低了孔隙度;施用粉煤灰显著减弱了土壤沙性,4种处理砂粒含量比对照减少11%～18%.粉粒含量增大3倍以上;粉煤灰的施用改善了沙土水分性状,土壤有效水含量增加49%～138%;粉煤灰高施用率增加土壤强度.研究表明,施用粉煤灰能有效的改善沙质土壤物理特性,增强沙土水分利用效率.

Effect of Soil Physical Properties Using Fly Ash as Sandy Soil Amendment

To find out the amelioration effect of soil physical properties on using fly ash as sandy soil amendment,we compared the effect of different fly ash application rate(0%,10%,20%,30%,40 %)on the soil physical properties and structure by means of simulated experiment in laboratory In this study.The results show that the bulk density of soil increases and the total porosity decrease with fly ash application;Compared to sandy soil,the decrease of 11%～18% in sand particle content and above 3 times higher in silt particle of four treatments indicate that it has significantly soil sandy by fly ash application,as well as,the amount of soil available water increased 49%～138% present the improvement effect of soil water characteristics.soil hardness increased by fly ash high application.The research results show that fly ash application could effectively improve soil properties and enhance water utilization efficiency.