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Pumping agent and application thereof

A pumping agent and application technology, applied in the field of pumping agent, can solve the problems of ineffective prevention of concrete bleeding and segregation, and achieve the effect of preventing concrete bleeding, preventing bleeding, and contributing greatly

Inactive Publication Date: 2013-05-08
CHINA 19TH METALLURGICAL CORP CHENGDU CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of them can solve the unavoidable over-mixing problem of pumping agent in practical application, and cannot effectively prevent the occurrence of adverse problems such as concrete bleeding and segregation.

Method used

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  • Pumping agent and application thereof
  • Pumping agent and application thereof
  • Pumping agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 Preparation of pumping agent of the present invention

[0038]Take polycarboxylic acid mother liquor (ethers, APEG type, 40% solid content, trade name LonS-Mw water-reducing type, manufacturer Sichuan Jilong Chemical Building Materials Co., Ltd., product number 20120829-0) 3.25kg, water 6.227kg and mix well Then, add 0.3kg of sodium gluconate (purity 98.5%), 0.07kg of white sugar (sucrose content ≥99.6%), 0.15kg of methyl cellulose, and 0.003kg of sodium lauryl sulfate (content ≥99%) in sequence, and stir well. That is to get the pumping agent. The dosage of the obtained pumping agent is 0.9-1.4 wt % of the dosage of the cementitious material in the concrete.

Embodiment 2

[0039] Example 2 Preparation of the pumping agent of the present invention

[0040] Take 1.75kg of polycarboxylic acid mother liquor (ethers, APEG type, 40% solid content, trade name LonS-Mw water-reducing type, manufacturer Sichuan Jilong Chemical Building Materials Co., Ltd., product number 20121207-0), mix 7.928kg of water evenly Then, add sodium gluconate (purity ≥98.5%) 0.21kg, sodium hexametaphosphate (purity ≥68wt%) 0.03kg, white sugar (sucrose content ≥99.6%) 0.07kg, triterpenoid saponin 0.012kg in turn, stir evenly, that is, Gotta pump. The dosage of the obtained pumping agent is 1.5-2.2 wt % of the cementitious material in the concrete.

Embodiment 3

[0041] Example 3 Preparation of the pumping agent of the present invention

[0042] Mix 200 parts by weight of polycarboxylic acid mother liquor (ethers, APEG type, 40% solid content, trade name LonS-Mw water-reducing type, manufacturer Sichuan Jilong Chemical Building Materials Co., Ltd., product number 20121207-0) with 760.8 parts by weight. After the water is uniformly mixed, 23 parts by weight of sodium gluconate, 6 parts by weight of sodium hexametaphosphate, 10 parts by weight of methyl cellulose, 0.2 parts by weight of sodium lauryl sulfate are added in turn, and the mixture is stirred evenly to obtain a pump. delivery agent. The dosage of the obtained pumping agent is 1.2-1.7wt% of the cementitious material in the concrete. The pumping agent is used in the production of ready-made concrete C15.

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Abstract

The invention relates to a pumping agent and application thereof, belonging to the field of construction materials. The invention aims to provide the pumping agent and the application thereof. The pumping agent provided by the invention comprises 175-325 parts by weight of polycarboxylic acid water reducing agent, 10-60 parts by weight of retarder, 10-50 parts by weight of water retention agent, 0.1-1.5 parts by weight of air entraining agent and 563.5-804.9 parts by weight of water. The invention also relates to the application of the pumping agent in C15-C70 concrete. The addition amount of the pumping agent accounts for 0.9-2.2 wt% of a cementing material in the concrete. The pumping agent prepared by the invention has the advantages of favorable material adaptability, low addition amount, high water reducing rate, low air content, high concrete strength contribution and the like, mainly solves the problem that the polycarboxylic acid pumping agent is easily subjected to over-addition in practical situations, can effectively prevent the defects of the concrete such as weepage, isolation and the like, and ensures the quality of the concrete.

Description

technical field [0001] The invention relates to a pumping agent and its application, and belongs to the field of building materials. Background technique [0002] Concrete pumping agent is an admixture used in concrete mixing and construction. It can reduce the friction of concrete pumping, concrete segregation and slump loss, improve the workability of concrete, speed up the construction progress, and improve the efficiency of fresh mixing. The pumpability of concrete can also improve the durability of hardened concrete, such as impermeability and frost resistance. It is suitable for ready-mixed commercial concrete, high-fluidity concrete, high-strength pumped concrete, self-compacting concrete, fair-faced concrete, large-volume concrete, bridge engineering concrete, etc. [0003] At present, most of the pumping agents on the market are produced by the compounding method, that is, several water reducers and admixtures (retarders, plasticizers, air-entraining agents, etc.) ...

Claims

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Application Information

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