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Slurry-rich concrete additive and preparation method thereof

A technology for concrete and additives, which is applied to the preparation of the slurry-rich concrete additive, an additive that can increase the volume of concrete slurry, and the field of slurry-rich concrete additives, which can solve the problem of not giving a guiding scheme and the like, and achieve a rich slurry. , good fluidity, small effect with time change

Active Publication Date: 2021-08-31
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 the rich slurry concrete additive increase the volume of the concrete slurry, and can be applied to the concrete where the powder content in the sand is seriously insufficient and seriously affects the construction.

Method used

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  • Slurry-rich concrete additive and preparation method thereof
  • Slurry-rich concrete additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: The slurry-rich concrete additive described in the present invention is compounded by rapidly absorbing and dispersing water-reducing agent, air-entraining water-reducing agent, water-retaining agent, air-entraining agent, and deionized water. The mass ratio is: fast adsorption and dispersion water reducer: air-entraining type water reducer: water retention agent: air-entraining agent = 70:200:10:0.8, the balance is deionized water; the sum of the masses of each component is 1000g.

[0022] The preparation method of fast adsorption and dispersion water reducing agent: add 72 parts of allyl polyethylene glycol monomethyl ether with a molecular weight of 800 in the reaction kettle, add 48 parts of deionized water, start stirring, heat up, and prepare material A at the same time Liquid and B material liquid, A material liquid is made by mixing together 38.88 parts of acrylic acid, 18.54 parts of sodium p-styrene sulfonate, 50 parts of deionized water, B material...

Embodiment 2

[0025] Example 2: The slurry-rich concrete additive of the present invention is compounded by rapidly absorbing and dispersing water reducing agent, air-entraining water reducing agent, water-retaining agent, air-entraining agent, and deionized water. The mass ratio is: fast adsorption and dispersion water reducer: air-entraining type water reducer: water retention agent: air-entraining agent = 80:180:15:1, the balance is deionized water; the sum of the masses of each component is 1000g.

[0026] The preparation method of fast adsorption and dispersion water reducer: add 90 parts of allyl polyethylene glycol monomethyl ether with a molecular weight of 1200 into the reaction kettle, add 60 parts of deionized water, start stirring, heat up, and prepare material A at the same time Liquid and B material liquid, A material liquid is made by mixing together 43.2 parts of acrylic acid, 7.73 parts of sodium p-styrene sulfonate, 40 parts of deionized water, B material liquid is made of...

Embodiment 3

[0029] Example 3: The slurry-rich concrete additive of the present invention is compounded by rapidly absorbing and dispersing water reducer, air-entraining water reducer, water retaining agent, air-entraining agent, and deionized water. The mass ratio is: fast adsorption and dispersion water reducer: air-entraining type water reducer: water retention agent: air-entraining agent = 60:220:20:0.5, the balance is deionized water; the sum of the masses of each component is 1000g.

[0030] The preparation method of fast adsorption and dispersion water reducing agent: add 80 parts of allyl polyethylene glycol monomethyl ether with a molecular weight of 800 in the reaction kettle, add 55 parts of deionized water, start stirring, heat up, and prepare material A at the same time Liquid and B material liquid, A material liquid is made by mixing together 61.2 parts of acrylic acid, 20.60 parts of sodium p-styrene sulfonate, 60 parts of deionized water, B material liquid is made of mixing...

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Abstract

The invention relates to a slurry-rich concrete additive and a preparation method thereof. The slurry-rich concrete additive is prepared by compounding the following components in percentage by mass: (60-100) per thousand of quick adsorption and dispersion water reducing agent, (150-250) per thousand of air entraining water reducing agent, (5-30) per thousand of water retaining agent, (0.5-2) per thousand of air entraining agent, and the balance of deionized water . The quick adsorption and dispersion water reducing agent is synthesized by copolymerizing allyl polyethylene glycol monomethyl ether, acrylic acid and sodium p-styrenesulfonate serving as raw materials. The air entraining water reducing agent is synthesized by taking a polyether macromonomer, acrylic acid, methacrylic acid, methyl acrylate and 2-acrylamide-2-methylpropanesulfonic acid as raw materials and adding an initiator and a chain transfer agent for copolymerization. The invention also provides a preparation method of the slurry-rich concrete additive. The volume of concrete slurry is increased, and the mortar can be applied to concrete which seriously affects construction due to the fact that the content of powder in sand is seriously insufficient.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a slurry-rich concrete additive, belonging to an additive capable of increasing the volume of concrete slurry. The invention also relates to a preparation method of the slurry-rich concrete additive. Background technique [0002] In recent years, with the vigorous development of infrastructure, the demand for concrete has increased significantly, resulting in an increasing shortage of sand and gravel materials, especially the serious shortage of natural river sand, and the application of machine-made sand has become an irresistible trend. At the same time, with the strengthening of environmental protection, machine-made sand manufacturers use polyacrylamide solution to settle sand powder and mud, resulting in a large loss of powder content in the sand (sand with a fineness below 0.075mm), and there are sand grades. Unreasonable matching phenomenon. Concrete is filled step by step, and th...

Claims

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Application Information

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IPC IPC(8): C04B24/16C08F283/06C08F220/06C08F212/14C08F220/58
CPCC04B40/0039C08F283/065C08F220/06C08F212/30C08F220/14C08F220/585C04B24/166C04B24/16C04B2103/0068Y02W30/91
Inventor 汪咏梅倪涛宋欣黄玉美封柯王进春王龙飞李茜茜田宇刘广宁刘翠芬
Owner SHIJIAZHUANG CHANGAN YUCAI BUILDING MATERIALS
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