Super-high toughness cement base composite material and preparation method thereof

A composite material and ultra-high toughness technology, applied in the field of materials science, can solve the problems of affecting tensile performance, slurry viscosity and poor water retention, and achieve improved tensile performance, high tensile strain, improved viscosity and The effect of water retention

Inactive Publication Date: 2017-12-01
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a kind of super-high toughness cement-based composite material with tensile strength and other technical problems due to the poor viscosity and water retention of the slurry after stirring when the above-mentioned ultra-high toughness cement-based composite material is in use, thereby affecting the tensile performance. Ultra-high toughness cement-based composite material with advantages of high strength and high tensile strain

Method used

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  • Super-high toughness cement base composite material and preparation method thereof
  • Super-high toughness cement base composite material and preparation method thereof
  • Super-high toughness cement base composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] An ultra-high toughness cement-based composite material, calculated in parts by mass, its raw material composition and content are as follows:

[0028]

[0029]

[0030] Described cement is the portland cement of P·II 52.5;

[0031] Described fly ash is Class I fly ash;

[0032] The sand is 30-100 mesh quartz sand;

[0033] The described water reducer is a high-performance water reducer of polycarboxylic acid series, specifically produced by Grace Company 152 superplasticizer;

[0034] The thickener is methyl cellulose ether, specifically BermocollM30 produced by Akzo Nobel;

[0035] The PVA fiber is produced by Baohualin Industrial Development Co., Ltd. in Yongan City. Its fiber length is 12mm, diameter is 33μm, tensile strength is 1120Mpa, and elastic modulus is 31.3Gpa.

[0036] The preparation method of the above-mentioned a kind of ultra-high toughness cement-based composite material, the specific steps are as follows:

[0037] First, add cement, fly as...

Embodiment 2

[0041] An ultra-high toughness cement-based composite material, calculated in parts by mass, its raw material composition and content are as follows:

[0042]

[0043]

[0044] Described cement is the portland cement of P·II 52.5 grade;

[0045] Described fly ash is Class I fly ash;

[0046] The sand is 30-100 mesh quartz sand;

[0047] The described water reducer is a high-performance water reducer of polycarboxylic acid series, specifically produced by Grace Company 152 superplasticizer;

[0048] The thickener is methyl cellulose ether, specifically BermocollM30 produced by Akzo Nobel;

[0049] The PVA fiber is produced by Baohualin Industrial Development Co., Ltd. in Yongan City. Its fiber length is 12mm, diameter is 33μm, tensile strength is 1120Mpa, and elastic modulus is 31.3Gpa.

[0050] The preparation method of the above-mentioned ultra-high toughness cement-based composite material mixed with a thickener, the specific steps are as follows:

[0051] First,...

Embodiment 3

[0055] An ultra-high toughness cement-based composite material, calculated in parts by mass, its raw material composition and content are as follows:

[0056]

[0057]

[0058] Described cement is the portland cement of P·II 52.5 grade;

[0059] Described fly ash is Class I fly ash;

[0060] The sand is 30-100 mesh quartz sand;

[0061]The described water reducer is a high-performance water reducer of polycarboxylic acid series, specifically produced by Grace Company 152 superplasticizer;

[0062] The thickener is methyl cellulose ether, specifically BermocollM30 produced by Akzo Nobel;

[0063] The PVA fiber is produced by Baohualin Industrial Development Co., Ltd. in Yongan City. Its fiber length is 12mm, diameter is 33μm, tensile strength is 1120Mpa, and elastic modulus is 31.3Gpa.

[0064] The preparation method of the above-mentioned a kind of ultra-high toughness cement-based composite material, the specific steps are as follows:

[0065] First, add cement, f...

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Abstract

The invention discloses a super-high toughness cement base composite material. The super-high toughness cement base composite material is prepared from the following raw materials in parts by mass: 175-225 parts of cement, 440-490 parts of coal ash, 175-225 parts of sand, 175-225 parts of water, 5.5-6.5 parts of water reducing agent, 0-2.2 parts of thickening agent, and 12-16 parts of PVA fiber. A preparation method of the super-high toughness cement base composite material comprises the steps of first, mixing cement, coal ash, sand and thickening agent uniformly; then adding water and water reducing agent, and mixing uniformly; and finally, adding PVA fiber, stirring till PVA is dispersed uniformly, so as to obtain the super-high toughness cement base composite material. The tensile strength of the super-high toughness cement base composite material reaches 3MPa-4.5MPa, and the tensile strain thereof reaches 2.5%-4.5%.

Description

technical field [0001] The invention belongs to the field of materials science and relates to a cement material, in particular to a super high toughness cement-based composite material and a preparation method thereof. Background technique [0002] Concrete has many advantages, but the material also has relatively prominent shortcomings, such as poor tensile and bending resistance, high self-weight, and easy cracks in the material during use, etc., which to a certain extent limit the material in practical engineering in the application. In order to improve and overcome these shortcomings, materials scientists and engineering circles have carried out more extensive exploration and research in the past half century, and it is now unanimously recognized that the addition of fibers in cement-based materials can help improve the strength of concrete. Tensile strength and elongation. [0003] Ultra-high toughness cement-based composite materials use conventional mixing and const...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00017C04B2201/50C04B18/08C04B14/06C04B16/0641C04B2103/302C04B2103/44Y02A30/30
Inventor 阚黎黎曹号龚雅文段贝贝王家豪陶毅晨
Owner UNIV OF SHANGHAI FOR SCI & TECH
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