High-weather-resistance low-viscosity concrete and preparation method thereof
A low-viscosity, concrete technology, applied in the field of concrete, can solve the problems of inability to guarantee the safe use of concrete structures, limited high weather resistance, poor durability, etc., and achieve the effects of reducing the probability of shrinkage cracking, improving adhesion, and reducing production costs
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Embodiment 1
[0029] A method for preparing high-weather-resistant low-viscosity concrete, specifically comprising the following steps:
[0030] (1) Add 25kg of Portland cement, 15kg of modified blast furnace slag powder, 8kg of steel slag powder, 3.5kg of diatomaceous earth, and 2kg of silane-modified polyether resin into the mixer for 5 minutes, then add 95kg of coarse aggregate and 80kg of Mix fine aggregates evenly;
[0031] (2) 0.7kg polycarboxylate water reducer, 2.5kg composite expansion agent and 11kg water are added in the mixture that step (1) makes successively, stir 3min with 800rpm speed, add 1kg reactive diluent with 200rpm speed, will Adjust the stirring rate to 1200rpm and stir for 4min to obtain the desired concrete.
[0032] The preparation method of the above-mentioned modified blast furnace slag powder is as follows: add 20kg of blast furnace slag powder into 100L of 2mol / L NaOH solution, heat up to 60°C, stir for 20min, cool to room temperature, and then add 2kg of cet...
Embodiment 2
[0038] A method for preparing high-weather-resistant low-viscosity concrete, specifically comprising the following steps:
[0039] (1) Add 35kg of Portland cement, 22kg of modified blast furnace slag powder, 12kg of steel slag powder, 4kg of diatomaceous earth, and 3kg of silane-modified polyether resin into the mixer for 3 minutes, then add 110kg of coarse aggregate and 85kg of fine aggregate. The aggregate is mixed evenly;
[0040] (2) Add 1kg polycarboxylate water reducer, 3kg composite expansion agent and 13kg water to the mixture prepared in step (1) successively, stir for 5min with 800rpm speed, add 1.5kg reactive diluent with 200rpm speed, and stir Adjust the speed to 1200rpm and stir for 3 minutes to obtain the desired concrete.
[0041]The preparation method of the above-mentioned modified blast furnace slag powder is as follows: add 25kg of blast furnace slag powder into 100L of 2mol / L NaOH solution, heat up to 60°C, stir for 20min, cool to room temperature, and the...
Embodiment 3
[0047] A method for preparing high-weather-resistant low-viscosity concrete, specifically comprising the following steps:
[0048] (1) Add 32kg of Portland cement, 18kg of modified blast furnace slag powder, 12kg of steel slag powder, 3.8kg of diatomite, and 2.5kg of silane-modified polyether resin into the mixer for 5 minutes, then add 100kg of coarse aggregate and 85kg fine aggregate mixed evenly;
[0049] (2) 0.8kg polycarboxylate water reducer, 2.8kg composite expansion agent and 12kg water are added to the mixture prepared in step (1) successively, stirred at 800rpm for 5min, and 1.2kg of active diluent is added at 200rpm, Adjust the stirring speed to 1200rpm and stir for 4min to obtain the desired concrete.
[0050] The preparation method of the above-mentioned modified blast furnace slag powder is as follows: add 20kg of blast furnace slag powder into 100L of 2mol / L NaOH solution, heat up to 60°C, stir for 20min, cool to room temperature, and then add 4kg of cetyl prop...
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