Anti-crack concrete

Abstract

The invention relates to the field of concrete, and particularly discloses anti-crack concrete. The anti-crack concrete comprises the following components in parts by weight: 30 to 40 parts of cement, 15 to 20 parts of water, 25 to 35 parts of fine aggregate, 40 to 50 parts of coarse aggregate, 5 to 10 parts of filler, 1 to 1.5 parts of a water reducing agent, 3 to 5 parts of an anti-crack fiber, 5 to 10 parts of reflective powder, 0.8 to 1 part of an expanding agent and 10 to 20 parts of rubber particles. The concrete has the advantages that heat absorption is reduced, specific heat capacity is reduced, overlarge temperature difference is avoided, porosity is increased, heat dissipation and water loss are improved, uniformity of bay temperature and humidity in a concrete part is improved, temperature cracks and shrinkage cracks are reduced, and the anti-cracking performance of the concrete can be improved by adding the anti-cracking fibers.

Description

technical field [0001] This application relates to the field of concrete, more specifically, it relates to a crack-resistant concrete. Background technique [0002] Concrete is a kind of building material mixed with cement, sand, gravel, water, etc. Concrete has a wide range of uses and is used in various buildings. It is a common technology development direction in the field of concrete to improve the performance of concrete according to different building requirements. . [0003] In road construction and some construction fields of the dam body, concrete is exposed to the outdoors all the year round after it is completed. Inclement weather such as exposure to the sun, wind, and large temperature differences is likely to cause cracks in the concrete due to thermal expansion and contraction, and large internal and external humidity differences. greater impact. [0004] At present, admixtures such as expansion agent and anti-cracking agent are often used in the field of con...

AI Technical Summary

Problems solved by technology

[0004] At present, admixtures such as expansion agent and anti-cracking agent are often used in the field of concrete to resist cracks, but they have a certain effect on initial cracks. In the long-term outdoor use of concrete, cracks are still prone to occur, and the anti-cracking effect is not good.

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