High-strength and anti-crack concrete and preparation method thereof

A concrete and high-strength technology, applied in the field of high-strength crack-resistant concrete and its preparation, can solve problems such as poor crack resistance of concrete, and achieve the effects of enhanced strength and crack resistance, excellent self-healing, crack resistance and increased strength.

Pending Publication Date: 2021-11-30
成都精准混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the defect of poor concrete anti-crack performance, the

Method used

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  • High-strength and anti-crack concrete and preparation method thereof
  • High-strength and anti-crack concrete and preparation method thereof
  • High-strength and anti-crack concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-7

[0043] In the preparation examples 1-7, polypropylene fibers, glass fibers and basalt fibers were used to prepare fibers 1-7, and the components between polypropylene fibers, glass fibers and basalt fibers are specifically shown in Table 1

[0044] The composition of table 1 preparation example 1-7 fiber

[0045]

[0046] Preparation example of urea-formaldehyde resin prepolymer aqueous solution

preparation example 8

[0048] Weigh 10kg urea, 20kg formaldehyde, and 1kg triethanolamine respectively, stir and mix to prepare a mixed solution, add ammonia water with a mass concentration of 10% to the mixed solution, adjust the pH of the mixed solution to 8, and adjust the temperature to 70°C React at constant temperature for 2 hours to obtain aqueous solution 1 of urea-formaldehyde resin prepolymer.

preparation example 9

[0050] The difference from Preparation Example 8 is that: 15kg of urea, 25kg of formaldehyde, and 1.5kg of triethanolamine were weighed to prepare urea-formaldehyde resin prepolymer aqueous solution 2, and the rest of the preparation conditions were the same as those of Preparation Example 8 with uniform preparation environment.

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Abstract

The invention relates to the field of building materials, and particularly discloses high-strength and anti-crack concrete and a preparation method thereof. The high-strength and anti-crack concrete is prepared from the following substances in parts by weight: 60-80 parts of aggregate, 20-30 parts of cement, 5-10 parts of an admixture, 80-100 parts of water, 3-5 parts of a water reducing agent, 3-5 parts of fibers and 1-2 parts of a curing agent, wherein the fibers are fibers loaded with continuous spherical structures, and the spherical structures comprise polypropylene resin balls. The preparation method comprises the following steps of: S1, preparing fibers; and S2, preparing concrete. The concrete disclosed by the invention can be used for house building and bridge construction, and has the advantages of high strength, excellent anti-cracking effect and difficulty in deformation and cracking.

Description

technical field [0001] The application relates to the field of building materials, in particular to a high-strength crack-resistant concrete and a preparation method thereof. Background technique [0002] Concrete, also called concrete in engineering, refers to an engineering composite material that uses gel materials to cement aggregates into a whole. Generally, it consists of gel materials, granular aggregates, water and necessary admixtures and admixtures It is a kind of material that is configured in a certain proportion and compacted after stirring. [0003] Conventionally densely formed hardened concrete has high strength and dense surface, but under the action of pressure, the hardened concrete is prone to cracks and depressions, which greatly reduces the flatness of the hardened concrete. The conventional method is to add fibers to the concrete. Through the filamentary structure of fibers, the bonding strength between concrete is enhanced, the strength of concrete i...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B20/12C04B111/20C04B16/06C04B14/42C04B14/46
CPCC04B28/00C04B20/12C04B2201/52C04B2201/50C04B2111/20C04B14/00C04B18/08C04B2103/302C04B16/0633C04B14/42C04B14/4656C04B20/1033C04B20/1014C04B20/1037
Inventor 魏进祝星张春灵刘作科
Owner 成都精准混凝土有限公司
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