Digging gangue concrete
A technology of concrete and gangue, applied in the field of concrete, to achieve the effects of low production cost, simple preparation process, and high cylinder compressive strength
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example 1
[0026] Concrete with the label C10 prepared with excavation gangue coarse aggregate, the proportion of concrete material per cubic meter is: excavation gangue coarse aggregate 48%, P.0 32.5 cement 13%, medium sand 30%, water 9%; After mixing the above-mentioned mixture, put it into the mixer and stir for 3 minutes to prepare the tunnel gangue concrete.
[0027] Among them, graded excavation gangue coarse aggregate is selected, its particle size ranges from 5 to 31.5 mm, and the particle size distribution of coarse aggregate complies with the provisions of the national standard GB14685.
[0028] The water-cement ratio of the above-mentioned tunneling gangue concrete is W / C=0.69.
[0029] After on-site preparation according to the ratio of the above mixture, the average compressive strength after 28 days of curing is 13.2Mpa.
example 2
[0031] Concrete with the label C15 prepared with excavation gangue coarse aggregate, the proportion of concrete material per cubic meter is: excavation gangue coarse aggregate 48%, P.0 32.5 cement 15%, medium sand 30%, water 7%; After mixing the aforementioned mixture, put it into a mixer and stir for 4 minutes to prepare the tunneling gangue concrete.
[0032] Among them, graded excavation gangue coarse aggregate is selected, its particle size ranges from 5 to 31.5 mm, and the particle size distribution of coarse aggregate complies with the provisions of the national standard GB14685.
[0033] The water-cement ratio of the above-mentioned tunneling gangue concrete is W / C=0.47;
[0034] After on-site preparation according to the ratio of the above mixture, the average compressive strength after 28 days of curing is 16.8MPa.
example 3
[0036] Concrete with the label C20 prepared with excavation gangue coarse aggregate, the proportion of concrete material per cubic meter is: excavation gangue coarse aggregate 48%, P.0 32.5 cement 17%, medium sand 28%, water 7%; After mixing the aforementioned mixture, put it into a mixer and stir for 4 minutes to prepare the tunneling gangue concrete.
[0037] Among them, graded excavation gangue coarse aggregate is selected, its particle size ranges from 5 to 31.5 mm, and the particle size distribution of coarse aggregate complies with the provisions of the national standard GB14685.
[0038] The water-cement ratio of the above-mentioned tunneling gangue concrete is W / C=0.41.
[0039] After on-site preparation according to the ratio of the above mixture, the average compressive strength after 28 days of curing is 23.5MPa.
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