WHDF type concrete inorganic crack-resisting permeability-educing agent
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A concrete and inorganic technology, applied in the field of concrete, can solve the problems of inability to compensate shrinkage, high cost of use, and inconspicuous effects, and achieve good crack resistance and permeability reduction performance, improved mechanical properties, and improved durability
Active Publication Date: 2013-02-13
武汉天衣新材料有限公司
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Problems solved by technology
Whether it is internal mixing or external coating, among them, the shrinkage compensation time of the expansion agent is not synchronized, and the purpose of compensating shrinkage cannot be achieved; the tensile strength of the fiber can only be applied within a certain range, so it cannot resist cracking, only Can limit the generation of cracks within a certain range; all organic materials have poor compatibility with concrete inorganic materials, have single functions, and the effect is not obvious, especially easy to age, and the use cost is high
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Embodiment 1
[0025] The components of WHDF (liquid) and their weight percentages are:
[0026] Crystallization excitation component 28%
[0027] active stimulating ingredient 10%
[0028] Tricalcium aluminate inhibitor 16%
[0029] Antimicrobial component 2%
[0030] water 44%
[0031] Wherein, the crystallization stimulating component is alum, the active stimulating component is hemihydrate gypsum, the tricalcium aluminate inhibiting component is boric acid, and the antimicrobial component is urea.
[0032] WHDF is formed by mixing and reacting the above components, and its use method is to add it together with mixing water during the concrete mixing process.
Embodiment 2
[0034] The components of WHDF (powder) and their weight percentages are:
[0035] Crystallization excitation component 20%
[0036] Active stimulating ingredient 13%
[0037] Tricalcium aluminate inhibitor 15%
[0038] Antimicrobial component 2%
[0039] Fly Ash 50%
[0040] Among them, the crystallization stimulating component is sodium hexametaphosphate, the active stimulating component is vitriol, the tricalcium aluminate inhibiting component is phosphogypsum, and the antimicrobial component is urea, and the usage method is the same as in Example 1.
Embodiment 3
[0042] The components of WHDF (liquid) and their weight percentages are:
[0043]Crystallization excitation component 25%
[0044] Active stimulating ingredient 12%
[0045] Tricalcium aluminate inhibitor 10%
[0046] Anti-microbial component 5%
[0047] water 48%
[0048] Wherein, the crystallization stimulating component is alum, the active stimulating component is green alum, the tricalcium aluminate inhibiting component is boric acid, and the antimicrobial component is water glass, and the usage method is the same as in Example 1.
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Abstract
The invention belongs to the technical field of concrete and particularly relates to a WHDF type concrete inorganic crack-resisting permeability-educing agent. The agent comprises the following components by weight percent: 20 to 30 percent of crystallizing exciting components, 10 to 20 percent of activating exciting components, 8 to 16 percent of tricalcium aluminate restraining components, 2 to 6 percent of microorganism resisting components and 40 to 60 percent of water or coal ash. The invention has the benefits that the WHDF type concrete inorganic crack-resisting permeability-educing agent is used for promoting the hydrating degree of the concrete, optimizing hydrated products and exciting active mixing material and calcium hydroxide to perform secondary hydration, thereby efficiently increasing the tensile strength, extreme stretching value and compacting property of the concrete, enhancing the capability of resisting cracking, reducing the early hydrating heat and air shrinkage of the concrete, reducing the possibility of cracking caused by the shrinkage, and obtaining excellent crack-resisting permeability-educing property of the concrete.
Description
Technical field [0001] The present invention is the field of concrete technology, which is specifically involved in a WHDF concrete inorganic cracking reduction agent. Background technique [0002] At present, my country ’s infrastructure construction is in a high -speed development stage.Dams, railways, bridges, docks, tunnels, and civil construction projects in the construction of water conservancy and hydropower construction, and a large number of concrete are used in civil construction projects.These concrete have contraction to varying degrees and cracking caused by it. The phenomenon of water seepage occurs, causing concrete tables, erosion in the concrete, and the rust of the concrete internal reinforcement, which affects the durability of the concrete and reduces the service life of concrete engineering.With the production of high -performance concrete (HPC) and high -strength concrete (HSC), the amount of cement in the concrete increases, the amount of water consumption ...
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