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Admixture for concrete repairing and preparation method thereof

An admixture and concrete technology, which is applied in the field of soil remediation, can solve the problems of prone to cracks and low ultimate elongation in concrete, and achieve the effect of improving ultimate elongation, good effect and reducing the probability of cracks.

Pending Publication Date: 2019-12-13
竹鹏翔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the existing concrete repair admixture in the prior art that the ultimate elongation rate is small, resulting in cracks in the repaired concrete, and propose a concrete repair admixture and its preparation method

Method used

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  • Admixture for concrete repairing and preparation method thereof

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Embodiment 1

[0025] The present invention proposes an admixture formula for concrete restoration, comprising the following raw materials in parts by weight: 10 parts of ferrous sulfate, 11 parts of diatomite, 5 parts of bentonite, 12 parts of barium nitrate, 5 parts of carboxylic acid, and 22 parts of gypsum powder , 18 parts of sand aggregate, 5 parts of additive, 22 parts of steel fiber, 30 parts of deionized water, 3 parts of magnesium stearate;

[0026] Its preparation method comprises the following steps:

[0027] S1: Use weighing equipment to weigh ferrous sulfate, diatomite, bentonite, barium nitrate, carboxylic acid, gypsum powder, sand and gravel aggregate, additives, steel fiber, deionized water, and magnesium stearate according to the proportion ;

[0028] S2: Put the weighed barium nitrate, diatomaceous earth, bentonite and deionized water into the heating box for hot mixing, hot mixing for 500s, so that the temperature of the material reaches 100°C, and wait until the mixture...

Embodiment 2

[0033] The present invention proposes an admixture formula for concrete restoration, comprising the following raw materials in parts by weight: 11 parts of ferrous sulfate, 12 parts of diatomite, 6 parts of bentonite, 13 parts of barium nitrate, 6 parts of carboxylic acid, and 23 parts of gypsum powder , 19 parts of sand aggregate, 6 parts of additive, 23 parts of steel fiber, 31 parts of deionized water, 4 parts of magnesium stearate;

[0034] Its preparation method comprises the following steps:

[0035] S1: Use weighing equipment to weigh ferrous sulfate, diatomite, bentonite, barium nitrate, carboxylic acid, gypsum powder, sand and gravel aggregate, additives, steel fiber, deionized water, and magnesium stearate according to the proportion ;

[0036] S2: Put the weighed barium nitrate, diatomaceous earth, bentonite and deionized water into the heating box for hot mixing, hot mixing for 550s, so that the temperature of the material reaches 150°C, and wait until the mixture...

Embodiment 3

[0041] The present invention proposes an admixture formula for concrete restoration, comprising the following raw materials in parts by weight: 12 parts of ferrous sulfate, 13 parts of diatomite, 7 parts of bentonite, 14 parts of barium nitrate, 7 parts of carboxylic acid, and 24 parts of gypsum powder , 20 parts of sand aggregate, 7 parts of additive, 24 parts of steel fiber, 32 parts of deionized water, 5 parts of magnesium stearate;

[0042] Its preparation method comprises the following steps:

[0043] S1: Use weighing equipment to weigh ferrous sulfate, diatomite, bentonite, barium nitrate, carboxylic acid, gypsum powder, sand and gravel aggregate, additives, steel fiber, deionized water, and magnesium stearate according to the proportion ;

[0044] S2: Put the weighed barium nitrate, diatomaceous earth, bentonite and deionized water into the heating box for hot mixing, hot mixing for 560s, so that the temperature of the material reaches 110°C, and wait until the mixture...

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Abstract

Belonging to the soil remediation field, the invention relates to an admixture for concrete repairing and a preparation method thereof. Directed at the problem of easy cracking of repaired concrete caused by small ultimate elongation of existing admixture for concrete repairing, the invention puts forward a technical scheme as the following that: the admixture for concrete repairing comprises thefollowing raw materials by weight: 10-18 parts of ferrous sulfate, 11-18 parts of diatomite, 5-9 parts of bentonite, 12-16 parts of barium nitrate, 5-12 parts of carboxylic acid, 22-25 parts of gypsumpowder, 18-26 parts of sandstone aggregate, 5-16 parts of an additive, 22-40 parts of steel fiber, 30-36 parts of deionized water and 3-9 parts of magnesium stearate. According to the invention, sandstone aggregate, the additive and steel fiber are added into a conventional admixture, the obtained concrete dries faster than rapid concrete, and only needing 45min, the strength can reach the standard of ordinary cement, also the steel fiber is added and can improve the overall ultimate elongation, at the end of repairing, the probability of concrete cracks can be reduced, and the repairing effect is good.

Description

technical field [0001] The invention relates to the technical field of soil repair, in particular to an admixture for concrete repair and a preparation method thereof. Background technique [0002] In the actual construction process of concrete engineering, the type of cement, the water-cement ratio of concrete and even the use of some admixtures that affect the strength of concrete will affect the strength of concrete. For projects that also have clear requirements on the lightness of concrete, how to better maintain or even improve the strength of concrete requires the introduction of other additives to participate in the adjustment. Surface enhancers can play a very good role in increasing the strength of concrete. Therefore, in recent years, the research and use of surface enhancers have attracted more and more attention. [0003] The existing admixtures for concrete repair have a small ultimate elongation rate, which leads to cracks in the repaired concrete. Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/04
CPCC04B40/0039C04B22/148C04B14/08C04B14/104C04B22/085C04B24/04C04B22/143C04B14/04C04B14/48C04B22/002C04B24/085
Inventor 竹鹏翔廉茗淇宋振发关磊岩
Owner 竹鹏翔
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