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DESIGN AND CONSTRUCTION METHOD FOR USING MODIFIED PHOSPHOGYPSUM IN ROADBED AND SLOPE
Disclosed is a design and construction method for using modified phosphogypsum in a roadbed and slope, where the method includes four parts: preparing a phosphogypsum-containing roadbed mixture, setting moisture content of a roadbed mixture, preparing a phosphogypsum containing slope mixture, and construction of a roadbed and slope. The preparation of a phosphogypsum-containing roadbed mixture includes as follow: 90 parts by weight of phosphogypsum and 10 parts by weight of cement are weighted, and uniformly mixed and stirred to obtain a base material mixture; and 2-4 parts by weight of sodium silicate is weighted and dissolved in water, and an obtained solution is added to the base material mixture to obtain the phosphogypsum-containing roadbed mixture. The design and construction method is simple, can satisfy roadbed strength and rebound modulus requirements, and can be widely applied to a filling-deficient area and an area with a relatively high yield of phosphogypsum solid wastes. In addition, this method can reduce occupation of phosphogypsum in cultivated lands, reduce the damage of phosphogypsum to the environment, and turn wastes into treasures. Moreover, phosphogypsum can satisfy use requirements of roadbed filling and slope protection.
DESIGN AND CONSTRUCTION METHOD FOR USING MODIFIED PHOSPHOGYPSUM IN ROADBED AND SLOPE
Disclosed is a design and construction method for using modified phosphogypsum in a roadbed and slope, where the method includes four parts: preparing a phosphogypsum-containing roadbed mixture, setting moisture content of a roadbed mixture, preparing a phosphogypsum containing slope mixture, and construction of a roadbed and slope. The preparation of a phosphogypsum-containing roadbed mixture includes as follow: 90 parts by weight of phosphogypsum and 10 parts by weight of cement are weighted, and uniformly mixed and stirred to obtain a base material mixture; and 2-4 parts by weight of sodium silicate is weighted and dissolved in water, and an obtained solution is added to the base material mixture to obtain the phosphogypsum-containing roadbed mixture. The design and construction method is simple, can satisfy roadbed strength and rebound modulus requirements, and can be widely applied to a filling-deficient area and an area with a relatively high yield of phosphogypsum solid wastes. In addition, this method can reduce occupation of phosphogypsum in cultivated lands, reduce the damage of phosphogypsum to the environment, and turn wastes into treasures. Moreover, phosphogypsum can satisfy use requirements of roadbed filling and slope protection.
DESIGN AND CONSTRUCTION METHOD FOR USING MODIFIED PHOSPHOGYPSUM IN ROADBED AND SLOPE
LI ZHIQING (author)
2020-02-13
Patent
Electronic Resource
English
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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