WHDF type concrete inorganic crack-resisting permeability-educing agent

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 to6 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 invention belongs to the technical field of concrete, and in particular relates to a WHDF type concrete inorganic anti-cracking and seepage reducing agent. Background technique [0002] At present, my country's infrastructure construction is in a stage of rapid development. Concrete is widely used in dams in water conservancy and hydropower construction, roads, railways, bridges, docks, tunnels in traffic construction, and civil construction projects. These concretes have different degrees of shrinkage and resulting cracking, and water seepage, causing corrosion on the surface and inside of the concrete and corrosion of the steel bars inside the concrete, which affects the durability of the concrete and reduces the service life of the concrete project. With the production of high-performance concrete (HPC) and high-strength concrete (HSC), the amount of cement in concrete increases, the amount of water decreases, and the amount of active admixture...

AI Technical Summary

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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