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Low-temperature rice hull ash doped cement-base shrinkage-free grouting material and using method thereof

A technology for grouting material and rice husk ash, applied in the field of building materials, can solve problems such as affecting structural stability and service life, endangering human health, easily polluting the environment, etc., achieving reduced shrinkage, good economic and social benefits, and a preparation process. simple effect

Inactive Publication Date: 2013-08-14
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used grouting materials are mainly cement-based grouting materials and chemical grouting materials, but both of them have certain disadvantages: the volume shrinkage of cement-based grouting materials is large, the strength development is slow, and the durability is poor, which affects the structural stability and service life; Chemical grouting materials are generally costly and have a certain degree of toxicity, which is easy to pollute the environment and may endanger human health

Method used

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  • Low-temperature rice hull ash doped cement-base shrinkage-free grouting material and using method thereof
  • Low-temperature rice hull ash doped cement-base shrinkage-free grouting material and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1, a cement-based non-shrinkage grouting material mixed with low-temperature rice husk ash, according to 52.5 grade ordinary Portland cement 100, aluminate cement 10, low-temperature rice husk ash 10, slag powder 5, fly ash 5 , river sand 200, expansion agent 2, sepiolite powder 2, water reducer 0.05, defoamer 0.05, water retention agent 0.02 by weight. According to 10% of the total weight of the non-shrinkage grouting material, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 2

[0058] Example 2, a cement-based non-shrinkage grouting material mixed with low-temperature rice husk ash, according to 42.5 grade ordinary Portland cement 100, aluminate cement 15, low-temperature rice husk ash 15, slag powder 10, fly ash 10 , river sand 250, expansion agent 3, sepiolite powder 5, water reducer 0.50, defoamer 0.10, water retention agent 0.04 weight ratio prepared. According to 20% of the total weight of the non-shrinkage grouting material, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 3

[0059] Example 3, a cement-based non-shrinkage grouting material mixed with low-temperature rice husk ash, according to 52.5 grade ordinary Portland cement 100, aluminate cement 35, low-temperature rice husk ash 30, slag powder 25, fly ash 25 , River sand 450, expansion agent 8, sepiolite powder 3, water reducer 2.50, defoamer 0.50, water retaining agent 0.10 weight ratio prepared. According to 30% of the total weight of the non-shrinkage grouting material, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

[0060] Table 1 Example performance test results

[0061]

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Abstract

The invention belongs to the field of building materials, and particularly relates to a low-temperature rice hull ash doped cement-base shrinkage-free grouting material and a using method thereof. The low-temperature rice hull ash doped cement-base shrinkage-free grouting material consists of ordinary Portland cement, aluminate cement, low-temperature rice hull ash, slag powder, coal ash, river sand, a swelling agent, sepiolite powder, water reducer, an antifoaming agent and a water-retaining agent. The low-temperature rice hull ash doped cement-base shrinkage-free grouting material can overcome the defects of low early strength, low expansion ratio, large volume shrinkage, low durability and the like in the conventional cement-base grouting material, and the rice husks in agriculture canbe processed. Water is added into the grouting material and a composite cementing material at site, and then a mixture is stirred to be used; and the grouting material has excellent performance of high flowability, high development speed of early strength, high long-term strength, high anti-permeability and high corrosion resistance and the like, and is shrinkage-free, and is suitable to be used as support between a base layer and a bottom plate, and suitable for bar splicing, fixing of supports, modification and reinforcement of a concrete structure and grouting of reserved pore channels of a prestressed concrete structure.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a cement-based non-shrinkage grouting material mixed with low-temperature rice husk ash and a use method thereof. Background technique [0002] Grouting mortar is a kind of grouting repair material based on inorganic or organic gelling materials, mixed with additives such as superplasticizers and fine aggregates. It has large fluidity, early strength, high later strength, micro Expansive performance. This product originated in the United States and was developed as a quick-setting material with high late strength for strengthening military facilities. Later, it was widely used in industrial sectors, mainly for mechanical equipment installation and reinforcement repair projects. [0003] With the development of my country's economy and the construction of a large number of infrastructures, many factories and enterprises with large-scale equipment continue t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/08
Inventor 孙振平陈明
Owner TONGJI UNIV