Enhanced anti-cracking self-repairing concrete and preparation method thereof

A concrete and self-repairing technology, which is applied in the field of self-repairing concrete and similar building materials, can solve the problems that repairing agents cannot be targeted at the same time, and achieve the effects of saving manpower and financial resources, enhancing crack resistance and impermeability, and simple production process

Inactive Publication Date: 2018-09-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, in order to solve the problem that most repairing agents at the present stage cannot simultaneously target cracks with a larger width, the present invention provides a concrete that enhances the crack resistance of concrete, inhibits the development of cracks, and allows the repairing agent to have more time to repair it. and its preparation method

Method used

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  • Enhanced anti-cracking self-repairing concrete and preparation method thereof
  • Enhanced anti-cracking self-repairing concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Prepare formwork according to the required concrete;

[0028] 2) The concrete is C30 concrete. The concrete material is prepared. The raw materials include the following components in parts by weight: 154 parts of cement, 36 parts of fly ash, 262 parts of fine aggregate, 613 parts of coarse aggregate, 41.8 parts of water, 1.6 parts of fiber, 7.6 parts of repair agent and 18 parts of anti-crack and anti-seepage agent.

[0029] 3) Mix the prepared concrete materials. After the mixer is grouted, add fine aggregate, coarse aggregate and fiber, and stir for 30 seconds; then add cement and fly ash, and stir for 30 seconds; then add water, Stir for 1 minute and 30 seconds, then add anti-crack and anti-seepage agent and repair agent, and stir for 1 minute;

[0030] 4) Remove the formwork and cure for 28 days in an environment with a temperature of 20±1°C and a humidity of 90%±1 to obtain reinforced crack-resistant self-healing concrete.

[0031] Specifically, in step 2), t...

Embodiment 2

[0034] 1) Prepare formwork according to the required concrete;

[0035] 2) The concrete is C30 concrete. The concrete material is prepared. The raw materials include the following components in parts by weight: 159 parts of cement, 40 parts of fly ash, 276 parts of fine aggregate, 645 parts of coarse aggregate, 44 parts of water, 1.9 parts of fiber, 7.6 parts of repair agent and 19 parts of anti-crack and anti-seepage agent.

[0036] 3) Mix the prepared concrete materials. After the mixer is grouted, add fine aggregate, coarse aggregate and fiber, and stir for 30 seconds; then add cement and fly ash, and stir for 30 seconds; then add water, Stir for 1 minute and 30 seconds, then add anti-crack and anti-seepage agent and repair agent, and stir for 1 minute;

[0037] 4) Remove the formwork and cure for 28 days in an environment with a temperature of 20±1°C and a humidity of 90%±1 to obtain reinforced crack-resistant self-healing concrete.

[0038] Specifically, in step 2), the...

Embodiment 3

[0041] 1) Prepare formwork according to the required concrete;

[0042] 2) The concrete is C30 concrete. The concrete material is prepared. The raw materials include the following components in parts by weight: 164 parts of cement, 44 parts of fly ash, 290 parts of fine aggregate, 677 parts of coarse aggregate, 46.2 parts of water, 2.2 parts of fiber, 7.6 parts of repair agent and 20 parts of anti-crack and anti-seepage agent.

[0043] 3) Mix the prepared concrete materials. After the mixer is grouted, add fine aggregate, coarse aggregate and fiber, and stir for 30 seconds; then add cement and fly ash, and stir for 30 seconds; then add water, Stir for 1 minute and 30 seconds, then add anti-crack and anti-seepage agent and repair agent, and stir for 1 minute;

[0044] 4) Remove the formwork and cure for 28 days in an environment with a temperature of 20±1°C and a humidity of 90%±1 to obtain reinforced crack-resistant self-healing concrete.

[0045] Specifically, in step 2), t...

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Abstract

The invention discloses enhanced anti-cracking self-repairing concrete and a preparation method thereof, and relates to the technical field of building materials. The concrete is C30 concrete and comprises, by weight, 154-164 parts of cement, 36-44 parts of fly ash, 262-290 parts of fine aggregates, 613-677 parts of coarse aggregates, 41.8-46.2 parts of water, 1.6-2.2 parts of fibers, 7.6-16.8 parts of repairing agents and 18-20 parts of anti-cracking anti-seepage agents. The concrete improves crack resistance and can effectively restrain cracking and continuously and automatically repair micro-cracks or micro-damage of the concrete caused by various reasons, the mechanical property of the concrete before being damaged can be recovered, economy and durability of the concrete are improved,and the service life of the concrete is prolonged.

Description

technical field [0001] The invention relates to the field of self-repairing concrete and similar building materials, in particular to an enhanced anti-cracking self-repairing concrete and a preparation method thereof. Background technique [0002] Due to its material defects, concrete will inevitably produce cracks during use, providing channels for harmful ions to enter the concrete, eroding the concrete, and reducing the safety and durability of the structure. Therefore, effectively repairing the cracks or losses of structures has become our main concern. [0003] In recent years, people have studied and improved restoration agents, and achieved significant results. At present, there are many suitable and effective restoration agents, which are more intelligent than traditional repair methods. But in the actual self-healing process, most self-healing concrete can only repair cracks with small width at this stage. For cracks with a large width, traditional repair methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2111/343C04B18/08C04B14/06C04B14/02C04B12/04C04B24/281C04B18/24C04B2103/0068
Inventor 陈连佳李静甘振先陈万昕郑钰洁吕宏鑫冯伟浩
Owner SOUTH CHINA UNIV OF TECH
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