Impermeable concrete and preparation method thereof

By using specific proportions of raw materials and soaking steps in the anti-seepage concrete to form a fiber mesh structure, the crack problem of impermeable concrete due to hydration heat is solved, and the tensile strength and permeability are improved.

CN119219365APending Publication Date: 2024-12-31HEFEI DONGKAI NEW BUILDING MATERIALS
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Patent Information

Application Number
CN202310785491.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-06-29
Publication Date
2024-12-31

AI Technical Summary

Technical Problem

During use, compressive and tensile stresses caused by temperature differences caused by hydration heat will cause cracks, and the prior art is difficult to effectively improve tensile strength and permeability.

Method used

Use a specific ratio of raw material formula, including cement, fly ash, mineral powder, coarse aggregate, silicone fume, rubber particles and polypropylene fibers, and form a fiber mesh structure in combination with polycarboxylic Acid high-performance water reducing agent and expanded fiber crack-resistant waterproof agent to improve the tensile strength and compressive strength of concrete.

Benefits of technology

It significantly enhances the tensile strength and compressive strength of concrete, improves the stratification phenomenon, reduces the generation of cracks, and improves the seepage resistance and density of concrete.

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Abstract

The invention discloses impermeable concrete, which is prepared from the following raw materials in parts by weight: 200 to 240 parts of cement, 45 to 60 parts of fly ash, 55 to 75 parts of mineral powder, 1130 to 1390 parts of coarse aggregate, 35 to 45 parts of silica fume, 600 to 660 parts of river sand, 60 to 75 parts of rubber particles, 12 to 16 parts of polypropylene fiber, 6 to 10 parts of water reducing agents, 3 to 8 parts of waterproof agents and 145 to 180 parts of water. According to the impervious concrete and the preparation method thereof, by adding the fly ash, the mineral powder, the coarse aggregate, the silica fume, the rubber particles and the polypropylene fibers, the tensile strength, the compressive strength and the flexibility of the concrete can be enhanced, meanwhile, the cohesiveness of the concrete can be improved, and the layering phenomenon of the concrete is improved, so that the concrete is not prone to cracking, and the service life of the concrete is prolonged. And secondly, a fiber net-shaped structure is formed in the concrete, so that the concrete has the effect of higher tensile strength.
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