Preparation method of additive for high-strength concrete

An additive and concrete technology, which is applied in the field of concrete, can solve the problems of high-strength concrete microcracks and reduced durability, and achieve the effects of increasing mechanical properties, increasing antibacterial properties, and increasing water resistance

Pending Publication Date: 2021-04-02
成都翎渠杉建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of additives for high-strength concrete in view of the problems that micro-cracks are easily generated at the internal interface of high-strength concrete and the durability is reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] A preparation method of an additive for high-strength concrete, the preparation method comprising the steps of:

[0029] (1) The mixture and 0.8mol / L hydrochloric acid solution were ultrasonically oscillated for 20 minutes at a mass ratio of 4:7-9, filtered, and the filter residue, glacial acetic acid and water were ultrasonically oscillated for 10 minutes at a mass ratio of 7:3:15-18, and the mixture was collected ;

[0030] (2) In terms of parts by weight, take 60-80 parts of the mixture, 50-70 parts of acetone, 20-25 parts of additives, 13-15 parts of auxiliary agents, and 10-12 parts of surfactants. First, mix the mixture, acetone, additives Put it into the reactor, heat at 70-80°C for 2h;

[0031] (3) After heating, cool down to 20-25°C, add auxiliary agent and surfactant, stir at 800r / min for 6h, discharge, filter, wash with ethanol, dry, collect dry matter, dry matter, two Chloromethane and additives are mixed according to the mass ratio of 12:26-28:3-5, and th...

Embodiment 1

[0034] The mixture is formed by mixing kaolinite and chitosan at a mass ratio of 8:7.

[0035] The additive is formed by mixing liquid paraffin and polyethylene glycol in a mass ratio of 3:7.

[0036] The auxiliary agent is a mixture of glutaraldehyde and triethoxysilane at a mass ratio of 5:3.

[0037] The surfactant is any one of fatty alcohol polyoxyethylene ether and polyoxyethylene sorbitan monooleate.

[0038] The additive is prepared by mixing ethylenediamine, cetyltrimethylammonium bromide and water in a mass ratio of 3:5:9.

[0039] The composite material is made by mixing ethyl acetate, anionic polyacrylamide and ethyl orthosilicate in a mass ratio of 10:5:7.

[0040] A preparation method of an additive for high-strength concrete, the preparation method comprising the steps of:

[0041] (1) The mixture and 0.8mol / L hydrochloric acid solution were ultrasonically oscillated for 20 minutes at a mass ratio of 4:9, filtered, and the filter residue, glacial acetic acid ...

Embodiment 2

[0046] The mixture is formed by mixing kaolinite and chitosan at a mass ratio of 8:6.

[0047] The additive is formed by mixing liquid paraffin and polyethylene glycol in a mass ratio of 3:7.

[0048] The auxiliary agent is a mixture of glutaraldehyde and triethoxysilane at a mass ratio of 5:3.

[0049]The surfactant is any one of fatty alcohol polyoxyethylene ether and polyoxyethylene sorbitan monooleate.

[0050] The additive is made by mixing ethylenediamine, cetyltrimethylammonium bromide and water in a mass ratio of 3:5:8.

[0051] The composite material is made by mixing ethyl acetate, anionic polyacrylamide and ethyl orthosilicate in a mass ratio of 10:6:5.

[0052] A preparation method of an additive for high-strength concrete, the preparation method comprising the steps of:

[0053] (1) The mixture and 0.8mol / L hydrochloric acid solution were ultrasonically oscillated for 20 minutes at a mass ratio of 4:8, filtered, and the filter residue, glacial acetic acid and w...

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PUM

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Abstract

The invention belongs to the technical field of concrete, and particularly relates to a preparation method of an additive for high-strength concrete. According to the invention, the embedding degree with concrete is increased, the combination degree with concrete is improved and the possibility of cracking of the concrete is reduced by utilizing the porous and pore composite effect of the productduring the use, then free calcium ions, magnesium ions and the like in the concrete are adsorbed by utilizing anionic polyacrylamide on the surface, the ions are deposited in the porous particles or used for filling cracks to achieve a timely repairing effect, the particles adsorb ions and fill the porous particles to gradually improve the mechanical properties of the concrete, meanwhile, due to the addition of the ions, a multi-dimensional net structure is formed in the concrete, the mechanical properties are further enhanced, and due to the enhancement of the particles, the durability of thehigh-strength concrete is improved.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a preparation method of an additive for high-strength concrete. Background technique [0002] Concrete is a cement-based composite material, which is a hydraulic cementitious material formed by combining various aggregates and admixtures with cement as the cementing agent. Concrete is the most used building material today. Compared with other building materials, concrete production has low energy consumption, wide sources of raw materials, simple process, low cost, durability, fire prevention, strong adaptability, and convenient application. From the perspective of social development and technological progress, concrete will still be the most widely used and used building material for a long time to come. However, due to the large weight, high brittleness and low strength (especially tensile strength) of concrete, its scope of use is affected and limited; at the sam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B14/10C04B14/06C04B24/26C04B24/38
CPCC04B40/0046
Inventor 陈也
Owner 成都翎渠杉建筑科技有限公司
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