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Waste rubber powder mixed model steel fiber reinforced lightweight aggregate concrete and preparation method thereof

A technology of lightweight aggregate concrete and waste rubber powder, which is applied in the field of plastic-steel fiber reinforced lightweight aggregate concrete mixed with waste rubber powder and its preparation, can solve the problems of low strength, easy brittle failure, poor impact resistance, etc., and achieve improved performance , reduced mining, good viscoelastic effect

Inactive Publication Date: 2015-09-23
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although lightweight aggregate concrete has many advantages compared with ordinary concrete, most of the raw materials of lightweight aggregate concrete are composed of hard materials, which have poor impact resistance and are prone to brittle failure and other performance defects, resulting in my country's lightweight aggregate concrete. Concrete is still mainly used in low-strength non-load-bearing structures

Method used

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  • Waste rubber powder mixed model steel fiber reinforced lightweight aggregate concrete and preparation method thereof
  • Waste rubber powder mixed model steel fiber reinforced lightweight aggregate concrete and preparation method thereof
  • Waste rubber powder mixed model steel fiber reinforced lightweight aggregate concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Taking the preparation of one cubic meter of plastic-steel fiber-reinforced lightweight aggregate concrete mixed with waste rubber powder as an example, the raw materials and mass ratios used are:

[0041] Cement 420kg

[0042] Plastic steel fiber 8kg

[0043] Rubber powder 10.2kg

[0044] Fine sand 626.2kg

[0045] Fly ash ceramsite 686kg

[0046] Net water consumption 185kg

[0047] Water reducer 0.35kg

[0048] The above cement is P·O42.5R grade ordinary Portland cement, produced by Baotou Mengxi Cement Co., Ltd.; the fiber is special-shaped plastic steel fiber, the fiber length is 25-39mm, and there are wavy embossments on the surface along the fiber length direction , the fiber cross-section is pentagonal, produced by Zhejiang Ningbo Dacheng New Material Co., Ltd.; the rubber powder is processed from waste tires, using 80-mesh rubber powder produced by Baotou Huancheng Rubber Recycling Co., Ltd.; the shape of fly ash ceramsite It is spherical, with a particle...

Embodiment 2

[0056] Taking the preparation of one cubic meter of plastic-steel fiber-reinforced lightweight aggregate concrete mixed with waste rubber powder as an example, the raw materials and mass ratios used are:

[0057] Cement 420kg

[0058] Plastic steel fiber 7kg

[0059] Rubber powder 5.1kg

[0060] Fine sand 653.5kg

[0061] Fly ash ceramsite 686kg

[0062] Net water consumption 185kg

[0063] Water reducer 0.20kg

[0064] The rubber powder in the above-mentioned embodiment 1 is replaced with 60 meshes. Other raw materials and consumption are identical with corresponding embodiment.

[0065] The preparation method is the same as that of Example 1, and plastic-steel fiber-reinforced lightweight aggregate concrete mixed with waste rubber powder is prepared and placed in a standard curing room for curing.

[0066] Its performance test method is identical with embodiment 1, and each performance test result is shown in Table 2.

[0067] Table 2

[0068]

Embodiment 3

[0070] Taking the preparation of one cubic meter of plastic-steel fiber-reinforced lightweight aggregate concrete mixed with waste rubber powder as an example, the raw materials and mass ratios used are:

[0071] Cement 420kg

[0072] Plastic steel fiber 7kg

[0073] Rubber powder 10.2kg

[0074] Fine sand 626.2kg

[0075] Fly ash ceramsite 686kg

[0076] Net water consumption 185kg

[0077] Water reducer 0.30kg

[0078] The rubber powder in the above-mentioned embodiment 1 is replaced with 80 meshes. Other raw materials and consumption are identical with corresponding embodiment.

[0079] The preparation method is the same as that of Example 1, and plastic-steel fiber-reinforced lightweight aggregate concrete mixed with waste rubber powder is prepared and placed in a standard curing room for curing.

[0080] Its performance test method is identical with embodiment 1, and each performance test result is shown in Table 3.

[0081] table 3

[0082]

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Abstract

The invention relates to concrete and a preparation method, in particular to Waste rubber powder mixed model steel fiber reinforced lightweight aggregate concrete and preparation method thereof. The concrete per cubic meter is made of raw materials comprising, by weight, 14%-25% of cement, 0.1%-0.6% of model steel fibers, 0.03%-1.75% of rubber powder, 22%-45% of fine sand, 27%-50% of fly ash ceramsite, 6%-12.9% of net water content and 0%-0.03% of water reducing agents. The old rubber powder and the model steel fibers are mixed into the lightweight aggregate concrete, so that performance advantages of two kinds of materials can be given to full play, on the other hand, the old rubber powder is added in the model steel fiber reinforced lightweight aggregate concrete, vibration energy can be more effectively absorbed, impact performance and bend toughness of the lightweight aggregate concrete can be enhanced remarkably, and meanwhile, frost resistance, corrosion resistance and abrasion resistance of the model steel fiber reinforced lightweight aggregate concrete can be improved.

Description

technical field [0001] The invention relates to a concrete and a preparation method, in particular to a plastic-steel fiber-reinforced lightweight aggregate concrete mixed with waste rubber powder and a preparation method. Background technique [0002] Replacing ordinary concrete with lightweight aggregate concrete is the most effective and direct measure to reduce the self-weight of the structure. In the case of the same strength level, the apparent density of lightweight aggregate concrete is 20% to 40% lower than that of ordinary concrete. [0003] Lightweight aggregate concrete has good fire resistance. Lightweight aggregate is a porous material. The thermal conductivity and linear expansion coefficient are smaller than ordinary concrete. The thermal performance is good, and the thermal insulation and heat insulation effects are remarkable. When a fire occurs, buildings using ordinary concrete can withstand fire for 1 hour, while buildings using lightweight aggregate co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/22C04B16/06
CPCY02W30/91
Inventor 牛建刚李京军朱聪
Owner INNER MONGOLIA UNIV OF SCI & TECH
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