Cement-base quick repairing material and preparation method thereof

A repair material, cement-based technology, applied in the field of building materials, can solve the problems of environmental pollution, land occupation, waste of resources, etc., and achieve the effect of promoting development, compact structure, and promoting early strength

Active Publication Date: 2010-11-24
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, waste concrete belongs to construction waste. If it is randomly piled up or landfilled, it will not only occupy land and pollute the environment, but is actually a waste of resources.

Method used

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  • Cement-base quick repairing material and preparation method thereof
  • Cement-base quick repairing material and preparation method thereof
  • Cement-base quick repairing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0022] A cement-based rapid repair material, which is prepared from sulphoaluminate cement, cement slurry dehydrated phase, metakaolin, water glass, water reducer, water, composite early strength agent raw materials, the weight ratio of each raw material is shown in the table 1.

[0023] Each raw material weight ratio of table 1

[0024] Example

serial number

Aluminosulfate

salt cement

Grout

body dehydrated phase

Metakaolin

water glass

Superplasticizer

water

complex

early strength agent

1

1

0.2

0.3

0.25

0.06

0.3

0.008

2

1

0.05

0.1

0.3

0.07

0.5

0.001

3

1

0.5

0.5

0.2

0.02

0.4

0.009

4

1

0.1

0.05

0.02

0.01

0.6

0.0006

5

1

0.3

0.4

0.1

0.09

0.3

0.01

6

1

0....

Embodiment 9-13

[0039] A cement-based rapid repair material, which is prepared from sulphoaluminate cement, cement slurry dehydrated phase, metakaolin, water glass, water reducer, water, and composite early strength agent raw materials, and each raw material is prepared according to the raw materials in Example 1. The first weight ratio (serial number is 1) is batched, see Table 1.

[0040]The dehydrated phase of the cement slurry is obtained by calcining waste cement slurry powder with a particle size of less than 0.075mm at 500°C for 4 hours; the metakaolin is obtained by calcining at 550°C for 6 hours, and its specific surface area is 15000m 2 / kg; the composite early strengthening agent is a mixture of sodium nitrite, anhydrous calcium chloride and triethanolamine, and the weight ratio of sodium nitrite, anhydrous calcium chloride and triethanolamine is 1.5:1.5:1.5. Change the modulus and Baume degree of water glass, see Table 3.

[0041] The preparation method is the same as in Example...

Embodiment 14-15

[0045] A cement-based rapid repair material, which is prepared from sulphoaluminate cement, cement slurry dehydrated phase, metakaolin, water glass, water reducer, water, and composite early strength agent raw materials, and each raw material is prepared according to the raw materials in Example 1. The first weight ratio (serial number is 1) is batched, see Table 1.

[0046] The dehydrated phase of the cement slurry is obtained by calcining waste cement slurry powder with a particle size of less than 0.075mm at 1000°C for 2 hours; the metakaolin is obtained by calcining kaolin at 1000°C for 4 hours, and its specific surface area is 13000m 2 / kg; The modulus of described water glass is 2.2, and Baume degree is 41. Change the composition of the compound accelerator, see Table 4.

[0047] The preparation method is the same as that of Example 1, and the properties of each group of products prepared are shown in Table 4.

[0048] Table 4 The ratio and product performance of comp...

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Abstract

The invention relates to a cement-base quick repairing material and a preparation method thereof. The cement-base quick repairing material is characterized by being prepared from the following raw materials: sulphate aluminum cement, dehydrated phase of cement slurry, metakaolin, water glass solution, a water reducing agent, water and a compound early strength agent, wherein the weight ratio of the sulphate aluminum cement to the dehydrated phase to the cement slurry to the metakaolin to the water glass solution to the water reducing agent to the water to the compound early strength agent is 1:0.05-0.5:0.05-0.5:0.02-0.3:0.01-0.1:0.2-0.6:0.0006-0.06. The dehydrated phase of cement slurry is prepared by grinding waste cement slurry in waste concrete into powder, and sintering the powder for2 to 4 hours at the temperature of between 500 and 1,000 DEG C. The material has the advantages of high working performance, high early strength, and energy saving and environmental protection, and is widely applied to repairing engineering of roads, airports, water conservancy, defense facilities, oil wells, mineral trail supports and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a cement-based quick repair material and a preparation method thereof. Background technique [0002] With the application of cement and concrete materials more and more widely, there are more and more concrete structures. However, due to the influence of load, natural environment and other factors, concrete structures often have problems such as damage and fracture, and repairing these damages in time will help to improve the service life of concrete structures. Since the smoothness of roads, bridges, airport pavements and other structures has a huge impact on economic and social benefits, the rapid repair of such structures is particularly important. [0003] Rapid repair materials are divided into three categories according to their composition characteristics: rapid-hardening cement, rapid-hardening concrete, and rapid-hardening admixture. Among these ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/36C04B22/00
CPCC04B28/06C04B2111/0075C04B2111/72C04B2111/00982C04B2103/001C04B2103/0006C04B20/04C04B28/065Y02W30/91C04B18/16C04B20/0076C04B20/026C04B14/106C04B12/04C04B22/085C04B22/124C04B24/122C04B24/2641C04B40/0028C04B2103/302
Inventor 水中和余睿曾伟能王桂明廖金良曾俊杰
Owner WUHAN UNIV OF TECH
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