Construction method for improving expansive soil embankment using phosphogypsum and microbe

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United States of America Patent

PATENT NO 11124930
SERIAL NO

17235489

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Abstract

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Design and construction method for improving an expansive soil embankment using phosphogypsum and microbes, including the following steps: (1) placing Bacillus pasteurii into 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.

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Patent Owner(s)

Patent OwnerAddress
INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCESBEIJING 100029

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hou, Jianwei Beijing, CN 3 2
Li, Zhiqing Beijing, CN 25 51
Zhang, Pengpeng Beijing, CN 11 88
Zhou, Yingxin Beijing, CN 7 2

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