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Secondary concrete fluidizing agent

A technology for concrete and fluidizing agent, applied in the field of building materials, can solve the problems of insignificant fluidization effect of pumping agent, loss of strength and durability, fluctuation of concrete performance, etc., to achieve good material adaptability, small strength loss, The effect of small secondary loss of slump

Inactive Publication Date: 2013-07-24
CHINA 19TH METALLURGICAL CORP CHENGDU CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of concrete transportation to pouring, due to the loss of slump over time, secondary fluidized concrete is required. The fluidization effect of traditional pumping agents is not obvious during secondary fluidization, and it will be affected by other components such as retardation. Concrete properties fluctuate due to coincident additions, such as loss of strength, faster loss of slump after fluidization, and even longer setting time due to overweight retarding components.
Moreover, the use of pumping agents for secondary fluidization is uneconomical; if fluidization is directly added with water, it will lead to loss of strength and durability

Method used

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Embodiment 1

[0032] The preparation of embodiment 1 concrete secondary fluidization agent

[0033] Take 6.74kg of ether polycarboxylate water-reducer, which comes from Sichuan Jilong Chemical LonS-Mw water-reducing polycarboxylate mother liquor, with a solid content of 40%, mix with 12.978kg of water, and add lauryl sulfuric acid in turn 0.002kg of sodium and 0.28kg of sodium hexametaphosphate were mixed to obtain a secondary fluidizer for concrete.

Embodiment 2

[0034] The preparation of embodiment 2 concrete secondary fluidization agent

[0035] Take 6.74kg of ether polycarboxylate water-reducer, which comes from Sichuan Jilong Chemical LonS-Mw water-reducing polycarboxylate mother liquor, with a solid content of 40%, mix with 12.978kg of water, and add lauryl sulfuric acid in turn 0.002kg of sodium-based mixture and 0.28kg of sodium hexametaphosphate were mixed to obtain a secondary fluidizer for concrete.

[0036] Among them, the weight ratio of the components in the sodium lauryl sulfate-based mixture is sodium lauryl sulfate: stearic acid: sulfonated melamine = 78:10:12.

Embodiment 3

[0037] The preparation of embodiment 3 concrete secondary fluidization agent

[0038] Take 6kg of polycarboxylic acid-based water reducer, mix with 12.6kg of water, add 0.0018kg of sodium lauryl sulfate mixture, and 0.24kg of sodium hexametaphosphate in sequence, and mix well to obtain a concrete secondary fluidizer.

[0039] Among them, the weight ratio of the components in the sodium lauryl sulfate-based mixture is sodium lauryl sulfate: stearic acid: sulfonated melamine = 78:10:12.

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Abstract

The invention relates to a secondary concrete fluidizing agent which mainly solves the technical problem of providing a secondary concrete fluidizing agent. The secondary concrete fluidizing agent comprises the following ingredients in parts by weight: 300-350 parts of a polycarboxylate-type water reducing agent, 0.08-0.10 part of an air-entraining agent, 12-16 parts of a retarder and 630-660 parts of water. A method for preparing the secondary concrete fluidizing agent mainly comprises the following steps: evenly mixing the polycarboxylate-type water reducing agent with water, sequentially adding the air-entraining agent and the retarder, and evenly stirring to obtain the secondary concrete fluidizing agent. The secondary concrete fluidizing agent is fluid, has the functions of ensuring that the secondarily fluidized concrete is small in strength loss, normal in setting time, small in secondary slump loss and the like, and also solves the quality fluctuation problem of the secondarily fluidized concrete.

Description

technical field [0001] The invention relates to a secondary fluidizing agent for concrete and belongs to the field of building materials. Background technique [0002] In the process of concrete transportation to pouring, due to the loss of slump over time, secondary fluidized concrete is required. The fluidization effect of traditional pumping agents is not obvious during secondary fluidization, and it will be affected by other components such as retardation. The coincident addition of the concrete will cause fluctuations in the performance of the concrete, such as strength loss, faster slump loss after fluidization, and even excessive setting time due to excessive retarding components. Moreover, the use of pumping agents for secondary fluidization is uneconomical; if fluidization is directly added to water, it will lead to loss of strength and durability. Contents of the invention [0003] The technical problem mainly solved by the invention is to provide a secondary fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32
Inventor 徐本梁
Owner CHINA 19TH METALLURGICAL CORP CHENGDU CONSTR
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