Concrete-faced rockfill dam concrete crack inhibitor and preparation method thereof

Abstract

The invention provides a concrete faced rockfill dam concrete crack inhibitor and a preparation method thereof. The concrete faced rockfill dam concrete crack inhibitor is prepared from, by weight, 5-30 parts of a dispersing agent, 2-18 parts of retarder, 6-14 parts of an air entraining agent, 2-6 parts of a foam stabilizer, 4-28 parts of polymer rubber powder, 5-25 parts of an autotrophic agent,10-20 parts of a surfactant and 3-12 parts of a shrinkage reducing agent. According to the concrete crack inhibitor suitable for the concrete faced rockfill dam, a certain amount of polymer rubber powder is added through reasonable compounding of the dispersing agent, a coagulant, the air entraining agent, the autotrophic agent and the shrinkage reducing agent, the tensile strength and the impactstrength of concrete can be remarkably improved, meanwhile, plastic shrinkage of the concrete can be reduced, concrete cracks are reduced, the cracking resistance of concrete of the concrete faced rockfill dam is improved, the service life is prolonged, and the repairing cost of the concrete faced rockfill dam is reduced.

Description

technical field [0001] The invention relates to the field of material science and engineering technology, in particular to a concrete crack inhibitor for a face dam and a preparation method thereof. Background technique [0002] In existing water conservancy and hydropower dams, concrete face rockfill dams are more and more widely used because of their good adaptability to topographic and geological conditions and the advantages of small dam body sections. At present, the anti-seepage of the dam body of the face dam is mainly made of reinforced concrete face material, and the anti-crack and anti-seepage of concrete is the focus of the performance requirements of the face dam. [0003] Due to the complex stress conditions of face dams and the high requirements for concrete crack resistance, the existing face concrete is prone to insufficient crack resistance and the extrusion between the face plates will eventually cause local cracks and damage to the face face, resulting in ...

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Problems solved by technology

[0003] Due to the complex stress conditions of face dams and the high requirements for concrete crack resistance, the existing face concrete is prone to insufficient crack resistance and the extrusion effect between the face plates, which will eventually cause local cracks and damage to the face face, resulting in water leakage and affecting the dam. body safety, resulting in high repair costs and difficult problems

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