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Anti-cracking concrete and preparation method thereof

A concrete and anti-cracking technology, which is applied in the field of concrete, can solve the problems of low impact resistance and easy cracking, and achieve the effects of improving toughness, prolonging service life, and enhancing impact resistance

Inactive Publication Date: 2017-12-01
宿松县尚鼎建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide anti-cracking concrete, to solve the low impact resistance and the problems of easy cracking in the above-mentioned background technology

Method used

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  • Anti-cracking concrete and preparation method thereof
  • Anti-cracking concrete and preparation method thereof
  • Anti-cracking concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] At 20-30℃, the stone is 1050kg / m 3 , the cement is 210kg / m 3 , the sand is 730kg / m 3 , water is 150kg / m 3 , water reducing agent is 4-7kg / m 3 , modified polyacrylic fiber is 3kg / m 3 , fly ash is 70kg / m 3 Mix and stir for 10-20min to make anti-cracking concrete product A1, wherein the mud content of the stones is ≤ 5%, and the mud content of the sand is ≤ 3%. Then, after 3 days, 10 days and 30 days, A1 was tested for impact resistance and splitting strength, and the test results are shown in Table 1.

Embodiment 2

[0036] At 20-30℃, the stone is 1100kg / m 3 , the cement is 270kg / m 3 , the sand is 880kg / m 3 , water is 180kg / m 3 , water reducing agent is 4-7kg / m 3 , Modified polyacrylic fiber is 7kg / m 3 , fly ash is 105kg / m 3 Mix and stir for 10-20min to make anti-cracking concrete product A2, wherein the mud content of the stones is ≤ 5%, and the mud content of the sand is ≤ 3%. Then, after 3 days, 10 days and 30 days, A2 was tested for impact resistance and splitting strength, and the test results are shown in Table 1.

Embodiment 3

[0038] At 20-30℃, the stone is 1106kg / m 3 , the cement is 246kg / m 3 , the sand is 770kg / m 3 , water is 166kg / m 3 , water reducing agent is 5.12kg / m 3 , Modified polyacrylic fiber is 3.76kg / m 3 , fly ash is 78.41kg / m 3 Mix and stir for 10-20min to make anti-cracking concrete product A3, wherein the mud content of the stones is ≤ 5%, and the mud content of the sand is ≤ 3%. Then, after 3 days, 10 days and 30 days, A3 was tested for impact resistance and splitting strength, and the test results are shown in Table 1.

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Abstract

The invention discloses anti-cracking concrete. The anti-cracking concrete is prepared from cement, sand, stone, water, a water reducing agent, modified polyacrylic fibers and coal ash, wherein the proportion of all raw materials is as follows: 1050 to 1180 kg / m<3> of stone, 200 to 290 kg / m<3> of cement, 700 to 900 kg / m<3> of sand, 145 to 180 kg / m<3> of water, 4 to 7 kg / m<3> of the water reducing agent, 2 to 8 kg / m<3> of the modified polyacrylic fibers, and 70 to 100 kg / m<3> of coal ash, and the raw materials are mixed according to a formula to prepare different types of anti-cracking concrete. By adding the modified polyacrylic fibers and the coal ash, the impact resistance and internal bonding strength of the anti-cracking concrete are improved, the cracking probability is reduced, the toughness is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to an anti-cracking concrete with high impact resistance and not easy to crack. Background technique [0002] The preparation of concrete in the prior art is only prepared by mixing cement, sand, stones, water and water reducing agent. The advantages of such concrete are high compressive strength, easy material acquisition, easy molding, low price, and can be combined with steel It is made into various load-bearing components, but its Achilles' heel is low impact resistance and easy cracking, thereby reducing the bearing capacity of the concrete structure, shortening the service life, and becoming a hidden danger of various disasters. Contents of the invention [0003] The object of the present invention is to provide anti-cracking concrete, to solve the problems of low impact resistance and easy cracking in the above-mentioned background technology. [0004] To achieve the abov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B20/02
CPCC04B28/00C04B20/023C04B2111/343C04B2201/50C04B14/02C04B14/06C04B16/0633C04B18/08C04B2103/302
Inventor 张小军
Owner 宿松县尚鼎建材有限公司