Chinese Academy of Sciences

Jianwei Hou

Zhiqing Li

Yingxin Zhou

Pengpeng Zhang

Zhonglin Tang

Shangfeng Wu

Zhiyi Liu

Zhengfu Qian

Weicheng Zeng

The present invention provides a method for protecting a soil slope from rain erosion by improving with phosphogypsum and a microbe. The method includes: (1) placingin a culture medium to prepare a microbial solution, and mixing urea, calcium chloride and water to prepare a cementing solution; (2) mixing a mixture, the microbial solution and water well, and adding the cementing solution and water to prepare an improving mixture slurry; and (3) spraying the improving mixture slurry to a face of the slope twice by wet spraying, mixing the improving mixture slurry with grass seeds well, spraying to the face of the slope once, covering with a non-woven fabric by tying and fixing to the slope, and watering every day.

Protection method against rain erosion for soil slope improved by phosphogypsum and microbe

Design and construction method for improving an expansive soil embankment using phosphogypsum and microbes, including the following steps: (1) placinginto a culture medium to prepare a microbial solution, and mixing urea and calcium chloride with water to prepare a cementing fluid; (2) mixing and stirring a mixture, the microbial solution and water, adding the cementing solution well, and mixing the cementing fluid with water to prepare an improved mixture; and (3) leveling and compacting original ground, laying geomembranes, the improved mixture, and geogrids, laying a last layer of geomembrane on the top surface of the embankment after pavement of the embankment, and paving a roadbed. The design and construction method can meet construction requirements of highway embankment projects and roadbed projects of first-grade and other grades of roads, and consume solid waste phosphogypsum.

Construction method for improving expansive soil embankment using phosphogypsum and microbe

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Beijing, China

Jianwei Hou