Magnesian concrete damage self-repairing additive and preparation method thereof

A concrete and self-healing technology, applied in the field of building material admixtures, can solve the problems of cracked concrete self-healing without data analysis, cracks being difficult to play a self-healing effect, increasing the strength of anti-crack repairing agents, etc., and reducing hydration. Heat release rate, superior self-healing effect, effect of increasing cohesion

Inactive Publication Date: 2017-11-21
GUANGDONG YUESHENG SPECIAL BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a good effect on improving the mechanical properties of concrete, but it is difficult to self-heal cracks with a wide width.
Its embodiment mainly reflects the effect of the anti-crack repair agent on the increase of strength, the delay of cracking time and the reduction of the number of cracks, and there is no data analysis on the self-repair of cracked concrete

Method used

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  • Magnesian concrete damage self-repairing additive and preparation method thereof
  • Magnesian concrete damage self-repairing additive and preparation method thereof
  • Magnesian concrete damage self-repairing additive and preparation method thereof

Examples

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Effect test

Embodiment 1

[0048] A kind of magnesia concrete damage self-repairing admixture provided in the present embodiment comprises by weight: 35% of light-burned magnesia, 35% of quartz powder, 10% of kaolin, 5% of sodium silicate, 5% of sodium hexametaphosphate , Gypsum 10%.

Embodiment 2

[0050] A kind of magnesia concrete damage self-repairing admixture provided in the present embodiment comprises by weight: 45% of light-burned magnesia, 35% of quartz powder, 10% of kaolin, 2% of sodium silicate, 3% of sodium hexametaphosphate , gypsum 5%.

Embodiment 3

[0052] A kind of magnesia concrete damage self-repairing admixture provided in the present embodiment comprises by weight: 55% of light-burned magnesium oxide, 25% of quartz powder, 10% of kaolin, 2% of sodium silicate, 3% of sodium hexametaphosphate , gypsum 5%.

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Abstract

The invention relates to the field of building material additives. A magnesian concrete damage self-repairing additive comprises the following components in parts by weight: 30 to 60 parts of magnesium oxide, 15 to 40 parts of quartz powder, 10 to 20 parts of kaoline, 2 to 6 parts of sodium silicate, 2 to 10 parts of sodium hexametaphosphate and 5 to 10 parts of gypsum. The concrete damage self-repairing additive based on a light calcinesia magnesia expanding agent has rapid and excellent self-repairing effect on cracks and internal damage caused by various reasons while improving the mechanical property and the crack resistance of the concrete.

Description

technical field [0001] The invention relates to the field of building material admixtures, in particular to a concrete admixture, a magnesium admixture suitable for crack self-healing and damage self-repair after concrete cracks. Background technique [0002] The biggest problem with concrete is that it is easy to produce cracks or local damage inside the material during production or service. The cracking problem is unavoidable and is determined by the microscopic characteristics of the material itself. For a long time, concrete cracks have been concerned by the engineering and academic circles. If they cannot be repaired in time, not only the durability and service life of the material will be affected, but even the safety of the entire structure may be affected. [0003] Repairing the cracks after the concrete cracks increases the number of constructions, which not only increases the construction cost, but also seriously affects the surrounding environment of buildings o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/16C04B28/02
CPCC04B40/0039C04B28/02C04B2201/50C04B22/066C04B14/06C04B14/106C04B12/04C04B22/16C04B22/143C04B18/12C04B18/08C04B14/02C04B2103/302
Inventor 朱乾坤
Owner GUANGDONG YUESHENG SPECIAL BUILDING MATERIALS
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