Flexible coal powder foam concrete and preparation thereof
A technology of foam concrete and concrete, which is applied in the field of concrete, can solve the problems of poor coal seam quality, high plugging cost, mining interference, etc., achieve the effect of small impact, reduce transportation and construction costs, and improve efficiency and progress
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[0044] 1. Raw materials of this concrete
[0045] 1. Pulverized coal
[0046] The coal powder can be obtained locally, that is, the coal powder accumulated in the roadway is directly used in the underground drilling of the coal mine. It is composed of powders with different sizes and irregular shapes. The general diameter range is 10-1000μm, most of them are 20-50μm, and the bulk density is about 450-500kg / m 3 .
[0047] 2. Cement
[0048] Ordinary Portland cement (No. 32.5, No. 42.5, No. 52.5) is used for cement, and there are products on the market.
[0049] 3. Foaming agent
[0050] The foaming agent is the main admixture of this concrete. It is made by processing, deforming and synthesizing non-polluting animal protein oil and vegetable oil. It is neutral and has good affinity with water. It can be used in cement coal powder mixed slurry Generate independent and evenly distributed air bubbles, forming a large number of closed high-stability foam capsules, showing ex...
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