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Accelerating agent and preparation method thereof

A technology of accelerator and activator, which is applied in the field of building auxiliary materials, can solve the problems of large injury to workers, large loss of materials, large drying shrinkage rate, etc. Effect

Active Publication Date: 2012-10-31
山西科腾环保新材料股份有限公司
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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 provide a low-alkali-content quick-setting agent for the technical defects of high alkali content, large drying shrinkage, poor impermeability, large rebound, large material loss, and great harm to the staff that exist in the current accelerator. , green environmental protection safety quick-setting agent and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: The raw materials and parts by weight of this example are: 10 parts of limestone, 18 parts of bauxite, 3 parts of desulfurized gypsum slag, 25 parts of fly ash, 6 parts of naphthalenesulfon-based high-efficiency water reducer, activator ( Sodium lauryl sulfate and methyl cellulose are prepared by weight 1:1) 0.05 parts.

[0017] The preparation method of the quick-setting agent in this embodiment includes the following steps: drying various raw materials, then mixing limestone, bauxite, and fly ash according to the ratio of raw materials, and sintering at 1000°C-1100°C, Then mix the sintered material with desulfurization gypsum slag and activator according to the ratio of raw materials, and grind until the Blaine specific surface area is 400-500m2 / kg.

Embodiment 2

[0018] Embodiment 2: The raw materials and parts by weight of this embodiment are: 30 parts of limestone, 36 parts of bauxite, 5 parts of desulfurized gypsum slag, 50 parts of fly ash, 15 parts of naphthalene sulfonate high-efficiency water reducer, activator ( Sodium lauryl sulfate and methyl cellulose are prepared by weight 1:1) 0.1 parts.

[0019] The preparation method is the same as above.

Embodiment 3

[0020] Embodiment 3: The raw materials and parts by weight of this embodiment are: 20 parts of limestone, 25 parts of bauxite, 4 parts of desulfurized gypsum slag, 35 parts of fly ash, 10 parts of naphthalenesulfon-based high-efficiency water reducer, activator ( Sodium lauryl sulfate and methyl cellulose are prepared by weight 1:1) 0.075 parts.

[0021] The preparation method is the same as above.

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PUM

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Abstract

The invention discloses an accelerating agent, which is characterized by consisting of the following raw materials in part by weight: 10 to 30 parts of limestone, 18 to 36 parts of bauxite, 3 to 5 parts of desulfurated gypsum residue, 25 to 50 parts of fly ash, 6 to 15 parts of high-efficiency water reducing agent and 0.05 to 0.1 part of exciting agent, wherein the high-efficiency water reducing agent is a naphthalene sulfonate high-efficiency water reducing agent, and the exciting agent is mixed by lauryl sodium sulfate and methylcellulose according to a mass ratio of 1:1. The accelerating agent has high impermeability and freezing resistance and low rebound rate, is easy, convenient and practicable to construct and has no harm to skin and eyes of a constructor. Meanwhile, the desulfurated gypsum residue is used as a raw material, the secondary utilization of the desulfurated gypsum residue is realized, resources are saved, the problem of treating solid waste residue in an electric power plant is solved and the environment is protected.

Description

technical field [0001] The invention belongs to the technical field of building auxiliary materials, and in particular relates to an accelerator and a preparation method thereof. Background technique [0002] Accelerator is a chemical additive that can promote the rapid setting and hardening of cement when added to cement concrete. It is mainly used in occasions that require rapid setting of cement concrete, such as anchor shotcrete support of mine roadways, thin-walled structures, curved structures, Emergency plugging, emergency repairs, mine shafts, tunnels and other underground protection projects, among which the sprayed concrete used for the configuration of anchor shotcrete support is one of the main uses of the accelerator. At present, the main raw material of accelerator is alkaline substance Na2CO3. For example, the typical formula of accelerator is 40% sodium carbonate, 40% sodium aluminate and 20% quicklime. Although this formula can meet the requirements of cemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B22/14C04B24/38C04B24/20
CPCC04B40/0046C04B20/04C04B14/28Y02W30/91C04B40/0039C04B14/303C04B18/08C04B22/145C04B28/02C04B2103/0068C04B2103/302C04B24/16C04B24/226C04B24/383
Inventor 武英程芳琴侯红串袁立志袁博
Owner 山西科腾环保新材料股份有限公司
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