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A platform for research: civil engineering, architecture and urbanism
Modified loess, and preparation method and application thereof
The invention discloses a modified loess, and a preparation method and application thereof, and relates to the technical field of loess material modification. The method modifies loess by using modified silica sol to obtain the modified loess, and comprises the following steps: uniformly spraying a nano silica sol solution into the loess, continuously spraying water to enable the water content of the loess to reach 15-17%, sealing with a film, storing in a dry and shade place for 2-3 days, stirring and uniformly mixing, and maintaining for 3-5 days to obtain the modified loess. Through the method, the specific surface area of loess can be increased, the loess pore number is reduced, and the permeability coefficient is reduced; the anti-seepage liner is used for preparing the anti-seepage liner for the refuse landfill; AND the full utilization of loess resources is realized, the construction cost of the refuse landfill is saved, and the pollution of the landfill leachate to underground water is reduced.
本发明公开一种改性黄土及其制备方法和应用，涉及黄土材料改性技术领域；利用改性硅溶胶对黄土进行改性得到改性黄土，具体的，将纳米硅溶胶溶液均匀喷洒在黄土中，继续喷洒水使黄土的含水量达到15‑17％，薄膜密封，置于干燥阴凉处放置2‑3日后翻动混匀，养护3‑5日得到改性黄土；通过上述方法可以提高黄土的比表面积，减少黄土孔隙数量，降低渗透系数；使其得以用于制备垃圾填埋场用防渗衬垫；实现黄土资源的充分利用，节约垃圾填埋场的建造成本，减少垃圾渗滤液对地下水的污染。
Modified loess, and preparation method and application thereof
The invention discloses a modified loess, and a preparation method and application thereof, and relates to the technical field of loess material modification. The method modifies loess by using modified silica sol to obtain the modified loess, and comprises the following steps: uniformly spraying a nano silica sol solution into the loess, continuously spraying water to enable the water content of the loess to reach 15-17%, sealing with a film, storing in a dry and shade place for 2-3 days, stirring and uniformly mixing, and maintaining for 3-5 days to obtain the modified loess. Through the method, the specific surface area of loess can be increased, the loess pore number is reduced, and the permeability coefficient is reduced; the anti-seepage liner is used for preparing the anti-seepage liner for the refuse landfill; AND the full utilization of loess resources is realized, the construction cost of the refuse landfill is saved, and the pollution of the landfill leachate to underground water is reduced.
本发明公开一种改性黄土及其制备方法和应用，涉及黄土材料改性技术领域；利用改性硅溶胶对黄土进行改性得到改性黄土，具体的，将纳米硅溶胶溶液均匀喷洒在黄土中，继续喷洒水使黄土的含水量达到15‑17％，薄膜密封，置于干燥阴凉处放置2‑3日后翻动混匀，养护3‑5日得到改性黄土；通过上述方法可以提高黄土的比表面积，减少黄土孔隙数量，降低渗透系数；使其得以用于制备垃圾填埋场用防渗衬垫；实现黄土资源的充分利用，节约垃圾填埋场的建造成本，减少垃圾渗滤液对地下水的污染。
Modified loess, and preparation method and application thereof
一种改性黄土及其制备方法和应用
ZHANG YONGBO (author) / GUO LINA (author) / GUANG XIPING (author) / SHI HONG (author)
2021-07-23
Patent
Electronic Resource
Chinese
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