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Concrete-specific polycarboxylate water reducer for mixing basalt powder in concrete and preparation method thereof

A technology for concrete and polycarboxylic acid, which is applied in the field of preparation of special polycarboxylate water-reducing agent for concrete, concrete admixture, and polycarboxylate water-reducing agent for concrete, can solve problems such as no guidance scheme, and achieve adaptability Good, high water reduction rate, small loss over time

Active Publication Date: 2018-04-24
SHIJIAZHUANG CHANGAN YUCAI BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above technologies have not given specific guidance on how to make polycarboxylate superplasticizers can effectively improve the various properties of concrete, so as to provide necessary conditions for the preparation and construction of basalt stone powder concrete

Method used

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  • Concrete-specific polycarboxylate water reducer for mixing basalt powder in concrete and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: (for mixing basalt powder in concrete) special polycarboxylate water reducer for concrete of the present invention is made from the raw materials of following components and weight percent: (solid content is 40wt.%) Polycarboxylate superplasticizer mother liquor 20%, slow-release high-efficiency superplasticizer 2%, water retention agent 0.1%, retarder (sugar, can be sucrose) 2%, alcohol amines (triethanolamine) 1%, anti-corrosion Agent 0.02%, deionized water is the balance; the sum of the weight percentages of the above-mentioned components is 100%. The water-retaining agent is hydroxypropyl methylcellulose, and the preservative is potassium sorbate.

[0018] The preparation method of the concrete polycarboxylate water reducer (for mixing basalt powder in concrete) comprises the following process steps: first add 75% deionized water in the mixing tank (the addition of deionized water is 75% of its total weight), then add (retarder) sugar, stir for 15 min...

Embodiment 2

[0019] Embodiment 2: (for mixing basalt powder in concrete) special polycarboxylate water reducer for concrete of the present invention is made from the raw materials of following components and weight percent: (solid content is 40wt.%) Polycarboxylate superplasticizer mother liquor 25%, slow-release high-efficiency superplasticizer 2.5%, water retention agent 0.1%, retarder (citric acid monohydrate) 2.5%, alcohol amines (triethanolamine) 1%, preservative 0.01%, and deionized water is the balance; the sum of the weight percentages of the above-mentioned components is 100%. The water-retaining agent is methyl cellulose, and the preservative is potassium sorbate.

[0020] The preparation method of the concrete-specific polycarboxylate water reducer (for mixing basalt powder in concrete) comprises the following process steps: first add 69% deionized water in the mixing tank (the addition of deionized water is 69% of its total weight), then add (retarder) citric acid monohydrate,...

Embodiment 3

[0021] Embodiment 3: (for mixing basalt powder in concrete) special polycarboxylate water reducer for concrete of the present invention is made from the raw materials of following components and weight percent: (solid content is 40wt.%) Polycarboxylate superplasticizer mother liquor 30%, slow-release high-efficiency superplasticizer 1.5%, water retention agent 0.1%, retarder 2%, alcohol amines (triisopropanolamine) 2%, preservative 0.03%, Deionized water is the balance; the weight percentage sum of the above-mentioned components is 100%. The retarder is a combination of HEDP and sodium gluconate, and the weight ratio of HEDP and sodium gluconate is 1:1. The water-retaining agent is a combination of hydroxypropylmethylcellulose and methylcellulose, the weight ratio of hydroxypropylmethylcellulose and methylcellulose is 1:2, and the preservative is sorbic acid The combination of potassium and sodium acetate, the weight ratio of potassium sorbate and sodium acetate is 1:0.5.

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Abstract

The invention discloses polycarboxylate superplasticizer special for concrete and for doping of basalt stone powder in the concrete and a preparation method thereof. The special polycarboxylate superplasticizer is prepared from 15-40% of polycarboxylate superplasticizer mother liquid, 1-8% of controlled-release type superplasticizer, 0.1-0.5% of a water-retaining agent, 2-5% of retarder, 1-8% of an alcohol amine substance, 0.01-0.05% of preservative and deionized water. The alcohol amine substance is one of triethanolamine, triisopropanolamine, diethanol amine and diethanolisopropanolamine. The retarder is one or several of sodium gluconate, citric acid monohydrate, sugar, HEDP and sodium pyrophosphate. The invention further provides a preparation method of the special polycarboxylate superplasticizer. The special polycarboxylate superplasticizer is high in water-reducing rate, the slump time lose of the stirred concrete is small, the early strength is high, and the adaptation of the concrete to the basalt stone powder is good; various properties of the concrete are effectively improved, and necessary conditions are provided for preparation of the concrete doped with the basalt stone powder and construction.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a special polycarboxylate water reducer for concrete mixed with basalt rock powder, and belongs to the technical field of building materials. The invention also relates to a preparation method of the polycarboxylate water reducer specially used for mixing basalt rock powder in concrete. Background technique [0002] Concrete is the most widely used building material in modern civil engineering. With the vigorous development of my country's water conservancy and hydropower infrastructure, transportation infrastructure, and industrial and civil buildings, the performance requirements of concrete are getting higher and higher. In order to To improve the performance of concrete, adding admixtures is one of the effective measures to improve the performance of concrete. However, with the rapid expansion of concrete demand, high-quality admixtures are decreasing day by day, and the phenomenon of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B28/00C04B103/30
CPCC04B28/00C04B40/0039C04B2103/302C04B2103/0068C04B24/10C04B24/383C04B24/122C04B24/04C04B2103/465C04B24/06C04B24/003C04B14/04
Inventor 刘欢刘昭洋王锦宇袁勇王进春董树强王龙飞刘江涛倪涛苏荣
Owner SHIJIAZHUANG CHANGAN YUCAI BUILDING MATERIALS
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