Concrete repair material and preparation method thereof

A repair material and concrete technology, applied in the field of concrete repair materials, can solve the problems of long curing time, low strength, easy shrinkage, etc., and achieve the effect of good durability, uniform thickness, and dense slurry

Active Publication Date: 2021-12-21
江苏龙泉管道科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional cement mortar or concrete has disadvantages such as low strength, long curing time, easy shrinkage and cracking

Method used

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  • Concrete repair material and preparation method thereof
  • Concrete repair material and preparation method thereof

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preparation example Construction

[0023] In another aspect, the present invention also provides a method for preparing the aforementioned concrete repairing material, which includes: soaking the water-absorbing resin in the non-alkali liquid quick-setting agent, heating and drying to constant weight, and obtaining the non-alkali Alkali liquid quick-setting agent modified water-absorbing resin; after mixing water-reducing agent, waterproof rubber powder, and organic additives, a premix is ​​prepared; cement, sand, mineral admixture, fiber and non-alkali liquid quick-setting agent are modified After the water-absorbing resin is mixed, it is added into the premixed material to obtain mortar powder; after adding water and stirring the mortar powder, the concrete repair material is obtained.

[0024] Specifically, soak the water-absorbent resin in an alkali-free liquid quick-setting agent with a concentration of not less than 50% for 24 hours, then put it into a vacuum heating drying oven, vacuumize and heat the wat...

Embodiment 1

[0026] A concrete repair material, which is composed of the following raw materials in parts by mass: 480 parts by mass of Portland cement, 50 parts by mass of ultrafine slag, 450 parts by mass of quartz sand of 40-60 mesh, 2.5 parts by mass of polycarboxylate superplasticizer, 10 parts by mass of waterproof rubber powder, 2 parts by mass of polypropylene fiber, 0.1 part by mass of defoamer, and 5 parts by mass of non-alkali liquid quick-setting agent modified water-absorbing resin.

[0027] Wherein, the preparation method of the concrete repair material is as follows: Weigh 20 parts by mass of water-absorbent resin with a particle size of 1.5 mm, put it into an alkali-free liquid quick-setting agent with a concentration of 45%, soak it for 24 hours, and then filter the water-absorbent resin Take it out and put it into a tray, put the tray into a vacuum heating drying oven, vacuumize it, heat it and dry it to constant weight, and then prepare the non-alkali liquid quick-setting...

Embodiment 2

[0032] A concrete repair material, which is composed of the following raw materials in parts by mass: 500 parts by mass of ordinary portland cement, 50 parts by mass of silica fume, 400 parts by mass of quartz sand of 40-60 mesh, and 3 parts by mass of polycarboxylate superplasticizer , 15 parts by mass of waterproof rubber powder, 3 parts by mass of basalt fiber, 0.5 part by mass of starch ether, and 3 parts by mass of non-alkali liquid accelerator modified water-absorbing resin.

[0033] Wherein, the preparation method of described concrete restoration material is:

[0034] Weigh 20 parts by mass of water-absorbent resin with a particle size of 1.2mm and put it in an alkali-free liquid quick-setting agent with a concentration of 40%. After soaking for 24 hours, use a filter device to take out the water-absorbent resin and put it into a tray, and put the tray into vacuum heating In the drying oven, vacuumize and heat and dry to constant weight to prepare the non-alkali liquid...

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Abstract

The invention belongs to the technical field of concrete repairing materials, and particularly relates to a concrete repairing material and a preparation method thereof. The concrete repairing material comprises the following components in parts by mass: 220-850 parts of cement, 20-60 parts of a mineral admixture, 350-650 parts of sand, 1-6 parts of a water reducing agent, 5-20 parts of waterproof rubber powder, 1-5 parts of fibers, 0.1-5 parts of an organic additive and 1-15 parts of alkali-free liquid accelerator modified water-absorbent resin. The alkali-free liquid accelerator modified water-absorbent resin is prepared by soaking water-absorbent resin in an alkali-free liquid accelerator. According to the concrete repairing material disclosed by the invention, prepared slurry is adjustable in fluidity, setting time and bonding anti-sagging performance, and the concrete repairing material can be used as a common repairing material and can also be used for spraying operation, pressure grouting or centrifugal pouring; and when the slurry stops flowing, the material is in a gel state instantly, has good anti-cracking performance and self-repairing performance, and is free of maintenance.

Description

technical field [0001] The invention belongs to the technical field of concrete repair materials, and in particular relates to a concrete repair material and a preparation method thereof. Background technique [0002] Concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, uniformly stirred, compacted and cured. [0003] Concrete repair materials can be divided into inorganic materials, organic materials and inorganic-organic composite materials. Conventional cement mortar or concrete has disadvantages such as low strength, long curing time, easy shrinkage and cracking. Contents of the invention [0004] The invention provides a concrete repair material and a preparation method thereof. [0005] In order to solve the above technical problems, the present invention provides a concrete repair material, comprising the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/72
CPCC04B28/04C04B2111/72C04B2111/00155C04B2201/50C04B18/146C04B14/28C04B18/141C04B18/08C04B14/06C04B2103/302C04B24/2623C04B24/2641C04B16/0633C04B16/0641C04B14/4643C04B16/0625C04B14/48C04B2103/44C04B24/38C04B2103/50C04B24/383C04B24/24Y02W30/91
Inventor 乔云武
Owner 江苏龙泉管道科技有限公司
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