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Rubber-engineered cementitious composite and its preparation method

A composite material and high ductility technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as waste rubber pollution, achieve performance improvement, increase deformation capacity, and reduce consumption

Inactive Publication Date: 2013-11-20
SOUTHEAST UNIV
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Problems solved by technology

[0005] Technical problem to be solved: Aiming at the deficiencies of the prior art, the present invention provides a rubber-high ductility cement-based composite material, reusing waste rubber in the field of high ductility cement Environmental pollution and other technical problems of rubber, while improving the performance of cement-based composite materials for popularization and application

Method used

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  • Rubber-engineered cementitious composite and its preparation method
  • Rubber-engineered cementitious composite and its preparation method
  • Rubber-engineered cementitious composite and its preparation method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] A rubber-high ductility cement-based composite material comprises the following components: cement, fly ash, water, water reducing agent and rubber additive, wherein the rubber additive is a mixture of rubber powder and quartz sand or rubber powder. Among them, the water reducer is a polycarboxylic acid type high-efficiency water reducer.

[0028] Further, in the present invention, the rubber additive is replaced with equal volume of quartz sand for calculation, then the mass parts of each component are:

[0029]

[0030] When proportioning, replace part or all of the quartz sand with rubber powder in equal volume;

[0031] In addition, polyvinyl alcohol fibers accounting for 1.5-2.5% of the total volume of the composite material are added.

[0032] Concrete each embodiment carries out proportioning according to the parts of each component as shown in the t...

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Abstract

The invention discloses a rubber-engineered cementitious composite, which comprises the following components: cement, fly ash, water, a water reducer and a rubber additive. The rubber additive is rubber powder or a mixture of rubber powder and quartz sand. The material is prepared by mixing according to certain proportion and order. Due to the adding of rubber powder, the deformability of engineered cementitious composite is increased. In addition, in the invention, a lot of fly ash and rubber powder are utilized as raw materials, the existing industrial waste residue and waste rubber not conducive to environmental protection are consumed, and meanwhile the dosage of quartz sand is reduced, thus being conducive to reducing carbon emission. Development of the rubber-engineered cementitious composite provided in the invention can greatly improve the performance of traditional engineered cementitious composites, thus facilitating application and promotion of engineered cementitious composites in the engineering field of China.

Description

technical field [0001] The invention relates to the field of fiber-reinforced cement-based composite materials. Background technique [0002] With the development of the rubber and automobile industries, a large amount of waste rubber is produced, which in turn causes environmental problems in the surrounding area. The stacking of waste rubber not only causes environmental pollution, but also provides a breeding ground for pests, mice, and mosquitoes. In the past few years, considering environmental issues, the disposal of waste rubber has become an urgent problem to be solved. In many countries, waste rubber is burned or used as fuel, which seriously pollutes the surrounding environment. Furthermore, some countries (such as France) have enacted new laws to prohibit landfilling as landfilling is becoming less and less feasible. The increasing amount of waste has become the main problem of waste disposal, so processing waste rubber into small particles and mixing it into c...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/22
CPCY02A30/30Y02W30/91
Inventor 张志刚马辉钱吮智
Owner SOUTHEAST UNIV
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