Water reducer capable of improving adhesiveness of concrete

A technology of adhesiveness and water reducing agent, applied in the field of concrete admixture, can solve the problems that affect the use of water reducing agent, prone to bleeding, easy to appear cracks, etc., to improve work performance, reduce bleeding, and reduce dosage Effect

Inactive Publication Date: 2016-10-05
ANHUI XINRUN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, problems such as bleeding, segregation, low strength, and cracks are prone to occur during the production of concrete, which affects the use of water reducing agents. These shortcomings are not explained in the article, and further modification is required.

Method used

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Experimental program
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Effect test

Embodiment Construction

[0014] A water-reducing agent capable of improving the adhesiveness of concrete, prepared from the following raw materials in parts by weight (kg): isopentenol polyoxyethylene ether 240, acrylic acid 25.2, ammonium persulfate 1.6, thioglycolic acid 0.53, lignin 13. An appropriate amount of sodium hydroxide solution with a concentration of 10wt%, an appropriate amount of deionized water, graphene oxide 26, polyethylene glycol 3, carbon black 4, metakaolin 4, slag powder 6, polyvinyl alcohol 3, molasses 2, wood Calcium 3.5.

[0015] Described a kind of water-reducing agent that can improve concrete adhesiveness is made by the following specific steps:

[0016] (1) Add 4 times the amount of deionized water to the graphene oxide, put it into an ultrasonic oscillator for 30 minutes until the dispersion is uniform, then heat the graphene oxide dispersion in a water bath at 60°C, and slowly add lignin , stir and disperse evenly to form a mixture for use;

[0017] (2) Add isopenteno...

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PUM

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Abstract

The invention discloses a water reducer capable of improving adhesiveness of concrete. The water reducer is prepared from, by weight, 240-250 parts of TPEG, 25.2-26.0 parts of acrylic acid, 1.6-1.65 parts of ammonium persulfate, 0.53-0.55 part of thioglycolic acid, 13-14 parts of lignin, proper amounts of sodium hydroxide solution of 10wt% in concentration and deionized water, 26-28 parts of grapheme oxide, 3-4 parts of polyethylene glycol, 4-5 parts of carbon black, 4-5 parts of metakaolin, 6-8 parts of superfine slag powder, 3-4 parts of polyvinyl alcohol, 2-3 parts of molasses and 3.5-4 parts of calcium lignosulfonate. Metakaolin after being calcined is added to prepare the water reducer, has certain adhesiveness and can improve viscosity and strength of the concrete after being used in the water reducer, so that consumption of cement is reduced; a proper amount of the superfine slag powder is added, so that working performance of the concrete is improved remarkably.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a water reducing agent capable of improving the adhesiveness of concrete. Background technique [0002] Polycarboxylate high-performance water-reducing agent is an important component material for preparing high-performance concrete. It is widely used in high-speed railways, bridges, Nuclear power, hydropower and other key projects. However, the performance of the mother liquor of polycarboxylate high-performance water reducer is relatively single, which cannot meet the needs of concrete in different engineering fields and different performance requirements, which greatly restricts the wide application and development of polycarboxylate high-performance water reducer. Experts and scholars at home and abroad have conducted systematic research on polycarboxylic acid-based high-performance water reducers through chemical and physical modification methods, and have achie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F291/08C08F220/06C04B24/32
CPCC04B24/32C04B2103/302C08F283/06C08F289/00C08F220/06
Inventor 朱安会马洪章
Owner ANHUI XINRUN NEW MATERIALS
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