Sprayed concrete for foundation pit slope, and construction method thereof
A shotcrete and slope technology, which is used in infrastructure engineering, excavation, sustainable waste treatment, etc., can solve the problems of high concrete rebound rate and easy collapse of the construction plane, shorten the setting time, reduce the self-weight, and accelerate the solidification. effect of knots
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Embodiment 1
[0027] A shotcrete for a foundation pit slope and a construction method thereof, is characterized in that the shotcrete mainly includes three parts: a grouting layer, a cover layer, and a concrete layer, and the grouting layer includes: 50 parts of water glass solution, garbage bottom 30 parts of slag powder, 10 parts of MgO, 20 parts of blast furnace ferronickel slag powder, 20 parts of magnesium chloride, and 100 parts of water; the garbage bottom slag powder needs to be immersed in 0.05mol / L hydrochloric acid solution for 3 hours, and the mass ratio of garbage bottom slag powder to solution 1:10, then add water glass solution dropwise while stirring in the garbage bottom slag powder solution, the stirring speed is 30 rpm, the mass ratio of water glass solution and garbage bottom slag powder is 1:80, then suction filtration, washing , drying; the covering layer includes: cotton fiber, water glass solution; the concrete layer includes: 500 parts of cement clinker, 100 parts of...
Embodiment 2
[0037] A shotcrete for a foundation pit slope and a construction method thereof, is characterized in that the shotcrete mainly includes three parts: a grouting layer, a cover layer, and a concrete layer, and the grouting layer includes: 20 parts of water glass solution, garbage bottom 50 parts of slag powder, 1 part of MgO, 10 parts of magnesium chloride, and 50 parts of water; the bottom slag powder of the garbage needs to be immersed in the hydrochloric acid solution of 0.2mol / L for 1h, and the mass ratio of the bottom slag powder of the garbage to the solution is 1:20, and then poured into the garbage Water glass solution is added dropwise while stirring in the bottom slag powder solution, the stirring speed is 10 rpm, the mass ratio of water glass solution and garbage bottom slag powder is 1:30, then suction filtration, washing and drying; the covering layer includes : cotton fiber, water glass solution; the concrete layer includes: 300 parts of cement clinker, 200 parts of...
Embodiment 3
[0047] A shotcrete for a foundation pit slope and a construction method thereof, is characterized in that the shotcrete mainly includes three parts: a grouting layer, a cover layer, and a concrete layer, and the grouting layer includes: 30 parts of water glass solution, garbage bottom 40 parts of slag powder, 5 parts of MgO, 15 parts of blast furnace ferronickel slag powder, 15 parts of magnesium chloride, and 80 parts of water; the garbage bottom slag powder needs to be immersed in 0.1mol / L hydrochloric acid solution for 2 hours, and the mass ratio of garbage bottom slag powder to solution 1:15, then add water glass solution dropwise while stirring in the garbage bottom slag powder solution, the stirring speed is 20 rpm, the mass ratio of water glass solution and garbage bottom slag powder is 1:50, then suction filtration, washing , drying; the covering layer includes: cotton fiber, water glass solution; the concrete layer includes: 400 parts of cement clinker, 150 parts of li...
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