Grouting expanding agent and production method thereof

A technology of expansion agent and water reducer, which is applied in the field of slurry, can solve problems such as cracking and slurry settlement, and achieve the effects of reducing sinking, balanced mechanical properties, and low dosage

Inactive Publication Date: 2018-02-23
广西云燕特种水泥建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned existing problems, the object of the present invention is to provide a grouting expansion agent and a production method thereof. Aiming at the problems such as settlement and cracking of the slurry after hardening of the current cement-based grouting materials, the use of lime plant waste, gypsum mud, etc. Material, a kind of expansion agent for grouting designed with reasonable formula

Method used

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  • Grouting expanding agent and production method thereof
  • Grouting expanding agent and production method thereof
  • Grouting expanding agent and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An expansion agent for grouting, which contains the following raw materials in parts by weight: expansion masterbatch: 60; active mineral admixture: 10; plastic expansion agent: 0.5; polycarboxylate water reducer: 2 The expansion masterbatch contains the following raw materials in parts by weight: gypsum slag: 35; silicate clinker: 20; lime plant waste: 10.

[0036] The gypsum slag is the slag after beneficiation of mirabilite ore, and its chemical composition: LOSS13.28%, SiO 2 33.43%, Fe 2 o 3 3.23%, Al 2 o 3 9.63%, CaO12.75, MgO7.34, SO 3 20.09%.

[0037] The silicate clinker is made of calcium carbonate, granulated blast furnace slag, kaolinite and gypsum in a weight ratio of 4:2:2:1, after being calcined at 1300~1350°C, and then added with a weight percentage of 5-8% Clinker made by grinding marble and 5-8% granite together.

[0038] Limework waste is one or more of crushed stone, flaked stone, cinder, slaked lime, lime slag, unburnt limestone, roasted clay ...

Embodiment 2

[0052] An expansion agent for grouting, which contains the following raw materials in parts by weight: expansion masterbatch: 75; active mineral admixture: 25; plastic expansion agent: 1.5; polycarboxylate superplasticizer: 5 The expansion masterbatch contains the following raw materials in parts by weight: gypsum slag: 45; silicate clinker: 30; lime plant waste: 25.

[0053] The gypsum slag is the slag after beneficiation of mirabilite ore, and its chemical composition: LOSS13.28%, SiO 2 33.43%, Fe 2 o 3 3.23%, Al 2 o 3 9.63%, CaO12.75, MgO7.34, SO 3 20.09%.

[0054] The silicate clinker is made of calcium carbonate, granulated blast furnace slag, kaolinite and gypsum in a weight ratio of 4:2:2:1, after being calcined at 1300~1350°C, and then added with a weight percentage of 5-8% Clinker made by grinding marble and 5-8% granite together.

[0055] Limework waste is one or more of crushed stone, flaked stone, cinder, slaked lime, lime slag, unburnt limestone, roasted cl...

Embodiment 3

[0069] An expansion agent for grouting, which contains the following raw materials in parts by weight: expansion masterbatch: 90; active mineral admixture: 40; plastic expansion agent: 2.5; polycarboxylate superplasticizer: 8 The expansion masterbatch contains the following raw materials in parts by weight: gypsum slag: 55; silicate clinker: 40; lime plant waste: 40.

[0070] The gypsum slag is the slag after beneficiation of mirabilite ore, and its chemical composition: LOSS13.28%, SiO 2 33.43%, Fe 2 o 3 3.23%, Al 2 o 3 9.63%, CaO12.75, MgO7.34, SO 3 20.09%.

[0071] The silicate clinker is made of calcium carbonate, granulated blast furnace slag, kaolinite and gypsum in a weight ratio of 4:2:2:1, after being calcined at 1300~1350°C, and then added with a weight percentage of 5-8% Clinker made by grinding marble and 5-8% granite together.

[0072] Limework waste is one or more of crushed stone, flaked stone, cinder, slaked lime, lime slag, unburnt limestone, roasted cl...

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Abstract

The invention discloses a grouting expanding agent which comprises the following raw materials in parts by weight: 60-90 parts of an expansion master batch, 10-40 parts of activated mineral admixture,0.5-2.5 parts of a plastic expanding agent and 2-8 parts of a polycarboxylate water reduction agent, wherein the expansion master batch comprises the following raw materials in parts by weight: 35-55parts of gypsum residues, 20-40 parts of silicate clinker and 10-40 parts of lime factory wastes. The product has dual effects of plastic expansion and hardening period expansion, shrinkage of concrete is sufficiently compensated, and the grouting expanding agent is a concrete additive with a low admixture amount and composite functions of expansion, water reduction, cracking resistance and the like.

Description

technical field [0001] The present invention relates to the technical field of slurry, in particular to a cement-based grouting material designed with a reasonable formula by utilizing lime plant waste, gypsum mud and other materials to solve the problems of sinking and cracking after the slurry is hardened. Expansion agent for grouting. Background technique [0002] Concrete expansion agent is a concrete admixture developed on the basis of expansive cement. In 1936, H. Lossier invented expansive cement. In 1958, Klien developed K-type expansive cement on the basis of this, and it was officially put into production in 1964. Japan was the first country to develop expansion agents. From 1962 to 1970, it successfully developed calcium sulfoaluminate expansion agents and lime-based expansion agents. In addition, Russia, the United States, Australia, Bulgaria, etc. have carried out the development of concrete expansion agents. Since the 1970s in my country, the research on con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12
CPCC04B40/0039C04B2103/302C04B22/142C04B22/10C04B22/146C04B22/0006C04B22/00C04B22/143C04B24/122C04B22/064
Inventor 黄芳农承战许建兴
Owner 广西云燕特种水泥建材有限公司
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