Machine-made sand regulator and preparation method thereof

A sand conditioner and mechanism technology, applied in the field of building materials, can solve the problems of poor working performance and low strength of concrete, and achieve the effects of high water reduction rate, good compatibility and prolonging construction time.

Inactive Publication Date: 2020-01-07
HUNAN ZHONGYAN BUILDING MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of poor workability and low strength of the concrete produced by using different machine-made sand raw materials and common concrete admixtures in the prior art, one of the purposes of the embodiments of the present invention is to provide a machine-made sand regulating agent

Method used

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  • Machine-made sand regulator and preparation method thereof
  • Machine-made sand regulator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This example provides a machine-made sand regulator, which contains the following components by mass percentage:

[0040] Polycarboxylic acid water reducing agent 1%, glue reducing agent 5%, early strength agent 3%, air-entraining agent 0.01%, polyether defoaming agent 0.05%, dense repair agent 0.4%, viscosity thixotropic agent 0.05%, the rest The amount is water.

[0041] Among them, the water reducing rate of the polycarboxylic acid water reducing agent is greater than 25%. The solid content of the polycarboxylic acid water reducing agent is 35-45%.

[0042] The gum reducing agent is triethanolamine. The early strength agent is calcium formate. The air-entraining agent is polyether phosphate. The polyether defoamer is emulsified silicone oil. The dense repair agent is polyacrylonitrile fiber. The viscosity thixotropic agent is talc.

Embodiment 2

[0044] This example provides a machine-made sand regulator, which contains the following components by mass percentage:

[0045] Polycarboxylic acid water reducer 5%, glue reducer 10%, early strength agent 10%, air-entraining agent 0.5%, polyether defoamer 0.8%, compact repair agent 3.5%, viscosity thixotropic agent 2%, and the rest The amount is water.

[0046] Among them, the water reducing rate of the polycarboxylic acid water reducing agent is greater than 25%. The solid content of the polycarboxylic acid water reducing agent is 35-45%.

[0047] The gum reducing agent is diethanol monoisopropanolamine. The early strength agent is Yuanming powder. The air-entraining agent is sodium lauryl sulfate. The polyether defoamer is emulsified silicone oil. The dense repair agent is polyacrylonitrile fiber. The viscosity thixotropic agent is molasses.

Embodiment 3

[0049] This example provides a machine-made sand regulator, which contains the following components by mass percentage:

[0050] Polycarboxylic acid water reducer 3%, glue reducer 7%, early strength agent 6%, air-entraining agent 0.3%, polyether defoamer 0.4%, compact repair agent 1.7%, viscosity thixotropic agent 1%, and the rest The amount is water.

[0051] Among them, the water reducing rate of the polycarboxylic acid water reducing agent is greater than 25%. The solid content of the polycarboxylic acid water reducing agent is 35-45%.

[0052] The gum reducing agent is triethanolamine. The early strength agent is Yuanming powder. The air-entraining agent is polyether phosphate. The polyether defoamer is emulsified silicone oil. The dense repair agent is polyacrylonitrile fiber. The viscosity thixotropic agent is molasses.

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Abstract

The embodiment of the invention provides a machine-made sand regulator and a preparation method thereof. The machine-made sand regulator comprises a polycarboxylate water reducing agent, a glue reducing agent, an early strength agent, an air entraining agent, a polyether type defoaming agent, a compact repairing agent, a viscosity thixotropic agent and water; the machine-made sand regulator is suitable for machine-made sand with different gradations; the durability requirement of the concrete can be ensured while good working performance of the concrete can be controlled. According to the machine-made sand regulator, various detection indexes of the newly mixed concrete can be obviously superior to those of a common admixture in the market at present, the slump of the concrete is as high as 200 mm, the volume weight reaches 2438 kg / m<3>, meanwhile, the workability is good, the 28-day strength reaches 66.8 MPa, and the strength increment is increased by more than 30% compared with thatof the common admixture.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a machine-made sand regulator and a preparation method. Background technique [0002] Concrete is still the main civil engineering material, and sand and gravel aggregates are indispensable. In recent years, with the rapid development of the construction industry, the demand for concrete has increased, and the requirements for quality and performance have also become higher. Due to the shortage of natural sand resources, machine-made sand has become the main material for concrete sand. [0003] A large amount of machine-made sand is used in concrete. Because most machine-made sand has a large fineness modulus, discontinuous gradation, high mud content and high water demand, it is easy to cause large water consumption for concrete mixing, poor water retention, and loss of slump. Large, it will also cause the strength of concrete to decrease. [0004] CN103482926A d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42
CPCC04B40/0039C04B2103/302C04B24/122C04B24/04C04B24/243C04B24/42C04B22/00C04B16/0658C04B22/147C04B24/16C04B24/10
Inventor 谭贝李兴李权
Owner HUNAN ZHONGYAN BUILDING MATERIAL TECH CO LTD
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