Low-volume-weight iron tailing powder reactive powder concrete and preparation method thereof
A technology of iron tailings powder and active powder, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc. A large number of stockpiling problems, the effect of reducing costs
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[0036] Preparation method of low-capacity heavy iron tail ore powder active powder concrete, specifically includes the following steps:
[0037] 1. The mixer is fully wetted with water and puts 10 to 30 min to empty the internal water.
[0038] 2, mix the release agent with water to obtain a release agent solution, attach the label to the bottom of the test mold, cover the bottom hole of the test mold, and apply the release agent solution to the inside of the test mold, stand for 1 to 2 h.
[0039] 3, taking the moist material in the material to dryness, flip the drying material once every 20 minutes until the surface of each component and the interior have no obvious moisture and group phenomenon.
[0040] 4, according to the mass fraction weigh, mix the water reducer and water mixed and mix well.
[0041] 5, the amount of good quartz sand, the steel fibers are poured into the mixer, and the mixture is stirred at a mixture of 180 to 210 s. Whether the stirring is evenly stirred, ...
Embodiment 1
[0049] Weigh 112 quartz sand coarse sand, 66 quartz sand sand, 36 quartz sand fine sand, 36 steel fibers, 200 cement, 50 parts of silicon ash, 70 tail mine powder, 3 water reducer, 40 Water.
[0050] The water reduction agent is uniformly stirred in the stirrer, and the steel fiber is stirred in the mixer. 180S, and at the same time pour half a mixed uniform water reduction solution in 30S, pour the remaining water reducer solution and stirred at the remaining water reduction solution and stirred, and then pouring the test mold; the pouring test piece is 95 % Relative humidity and 20 ° C, stand after 24 h, the released test piece is placed in the steam maintenance of the steam in the steam case, the maintenance temperature is 85 ° C, the initial temperature is 20 ° C, liter, and the cooling rate is 15 ° C / h, take out the test block to obtain a low-capacity iron tail mine activity powder concrete.
[0051] It was measured: the pressure-resistant strength of the low-capacity heavy...
Embodiment 2
[0053] Weigh 100 pieces of stone sand coarse sand, 66 quartz sand sand, 38 stone sand fine sand, 36 steel fibers, 220 cement, 50 parts of silicon ash, 73 iron tail mine powder, weigh 4 parts water reduction The agent is mixed with 44 parts of water and stir well. The quartz sand and steel fibers were stirred at a mixing machine, and the weighing cement, silica gray, and tail mine powder were stirred at a mixing machine, stirred at the mixer, and the mixer was stirred at 210s, and half of the 30S is poured in 30S. The uniform water reduction solution has been mixed, and the residual water reduction solution is poured into the remaining water reduction solution and stirred for 330 s. After stirring, the pouring test mode is poured and the pouring test piece is in 95% relative humidity and 20 ° C under conditions. After 24 hours, the molded sample was placed in the steam maintenance of the steam in the steam case, the maintenance temperature was 85 ° C, the initial temperature was 20...
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