Lightweight concrete and preparation method and applications thereof

The technology of lightweight concrete and lightweight aggregate is applied in the field of lightweight concrete and its preparation, and can solve the problems of inability to meet the requirements of high tensile strength of concrete blocks, unattainable flexural-compression ratio, and low tensile strength, etc. Achieve the effect of light weight, improved seismic performance, and improved flexural strength

Inactive Publication Date: 2013-05-29
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, ordinary concrete and concrete blocks used in the construction market generally have defects such as self-heavy weight, low flexural strength, poor toughness, and poor thermal insulation effect; some lightweight concrete blocks, such as aerated concrete blocks, have compressive strength Low, lower flexural strength, poor toughness and other defects, their folding ratio (or splitting ratio) can not meet the requirements of the national standard "Uniform Technical Specifications for Application of Wall Materials" (GB50574-2010)
[0003] Among the concrete and concrete blocks sold on the market, there are no products added with polymer emulsions, and in the current publish

Method used

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  • Lightweight concrete and preparation method and applications thereof
  • Lightweight concrete and preparation method and applications thereof
  • Lightweight concrete and preparation method and applications thereof

Examples

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Effect test

Embodiment 1

[0033] A lightweight concrete, which is composed of the following raw materials, in terms of parts by weight: 50 parts of cement, 25 parts of fly ash, 25 parts of slag powder, 2 parts of naphthalene-based water reducer, 4 parts of sodium sulfate, and 40 parts of water , 0.8 part of polyphenylene particle, 0.3 part of polymer emulsion, described polymer emulsion is taken and mixed by T-31 curing agent and epoxy resin by weight ratio of 1:4; The preparation method of this concrete comprises following step:

[0034] A. Weigh cement, fly ash, slag powder, naphthalene-based water reducer, sodium sulfate, water, polyphenylene particles, polymer emulsion according to the proportion;

[0035] B. carry out surface treatment to the polyphenylene particle that takes by weighing in step A: be dissolved in water with the triethanolamine of polyphenylene particle quality 6% and obtain triethanolamine aqueous solution, with watering can the triethanolamine aqueous solution is evenly sprayed ...

Embodiment 2 Embodiment 6

[0037] Embodiment 2-Embodiment 6: A kind of lightweight concrete. Please refer to Table 1 for the raw materials and parts by weight of the lightweight concrete. The preparation method is the same as that of Embodiment 1.

[0038] Table I:

[0039]

Embodiment 7

[0041] A lightweight concrete, which is composed of the following raw materials, in terms of parts by weight: 50 parts of cement, 25 parts of slag powder, 25 parts of fly ash, 40 parts of water, 2 parts of naphthalene-based water reducer, 4 parts of sodium silicate part, 10 parts of ceramsite, 0.3 part of polymer emulsion, described polymer emulsion is taken and mixed by weight ratio of 1:4 by T-31 curing agent and epoxy resin; The preparation method of this concrete comprises following steps:

[0042] A. Weigh cement, slag powder, fly ash, water, naphthalene superplasticizer, sodium silicate, ceramsite, polymer emulsion according to the proportion;

[0043] B. Carry out surface treatment to the ceramsite weighed in step A: stir the ceramsite and the cement slurry with a water-cement ratio of 0.4 evenly to complete the shell making. The amount of the cement slurry is such that the ceramsite can be completely wrapped ;

[0044] C. Disperse and dissolve the polymer emulsion, s...

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Abstract

The invention discloses a lightweight concrete and a preparation method and applications thereof. The lightweight concrete is composed of raw materials such as cement, industrial waste residues, lightweight aggregates, a water reducing agent, water, an exciting agent and a polymer emulsion. The preparation method comprises the steps of carrying out surface treatment, mixing and stirring and the like on the raw materials. The lightweight concrete prepared by using the method disclosed by the invention can be used for being prepared into lightweight concrete blocks, because lightweight aggregates subjected to surface treatment and industrial waste residues subjected to activation are adopted in the production process of the lightweight concrete disclosed by the invention, and a specific polymer emulsion composed of a curing agent and resins is added, lightweight concrete blocks have the advantages of high strength and high toughness, and the weights of the lightweight concrete blocks are also reduced. In addition, the lightweight concrete disclosed by the invention also has the advantages of simple preparation method, convenience for operation, easiness for promotion and application.

Description

technical field [0001] The invention relates to a lightweight concrete and its preparation method and application. Background technique [0002] At present, ordinary concrete and concrete blocks used in the construction market generally have defects such as self-heavy weight, low flexural strength, poor toughness, and poor thermal insulation effect; some lightweight concrete blocks, such as aerated concrete blocks, have compressive strength Low, lower flexural strength, poor toughness and other defects, their folding ratio (or splitting ratio) can not meet the requirements of the national standard "Uniform Technical Specifications for Application of Wall Materials" (GB50574-2010). [0003] Among the concrete and concrete blocks sold on the market, there are no products added with polymer emulsions, and in the current published patents, there are reports of using polyvinyl acetate and polyacrylate as polymer emulsions to make concrete blocks. , but polyvinyl acetate is easil...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B16/10
Inventor 董健苗吴辉琴
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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