摘要
[目的]研究粉煤灰改良风沙土物理性质的有效性。[方法]在测量供试样品的粒径范围、土壤比重、容重,孔隙度的基础上,对风沙土添加不同用量的粉煤灰并调控测试条件,研究了不同土壤样品的比重、容重,孔隙度及水分物理性质的变化情况。[结果]风沙土中掺入粉煤灰使风沙土黏粒含量增多,土壤容重、孔隙度降低,风沙土与粉煤灰最优的添加率为30%。30%添加率可有效改良土壤物理性状,土壤透水性与持水性约1∶2,孔隙度为50%～60%,具有壤土的特点,其含水率较沙土有明显提高,渗透性不断升高,有效水分滞留时间增加。[结论]该研究为利用粉煤灰改良风沙土物理性质提供参考。
[ Objective ] The aim was to research the effective measure of the improved physical properties of Aeolian sandy soil with fly ash. [ Method ] Based on the analysis of the structure and physical properties of Aeolian sandy soil and fly ash, and the measurement of particle size range of test sample, soil proportion, soil bulk density and porosity the matching soil proportion, soil bulk density, porosity and water physical properties changes of fly ash of imposing different application rates to Aeolian sandy soil were studied. [ Result ] The sandy soil by mixing fly ash increased Aeolian sandy soil clay, reduced soil bulk density and porosity coefficient. Contrasting four kinds of allocated proportion plans, optimal application rate of Aeolian sandy soil with fly ash was 30%. The fly ash with optimal application rate could effectively improve the soil physical traits. Soil permeability and water holding capacity was close to 1 ： 2. Pore-size was between 50% and 60%, with the characteristics of loam. Soil moisture of fly ash in the soil significantly improved compared with sand, the permeability increased unceasingly, and effective water stranded time increased. [ Conclusion] The research provided support for the improvement of physical properties of Aeolian sandy soil with fly ash.
出处
《安徽农业科学》
CAS
北大核心
2011年第36期22399-22400,22548,共3页
Journal of Anhui Agricultural Sciences
基金
内蒙古自治区高等学校科学研究项目(NJZY07118)
内蒙古自然科学基金项目(2010MS0616)
关键词
粉煤灰
风沙土
物理性质
Fly ash
Sand soil
Physical properties
