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Durable anti-cracking concrete for tunnel

A technology of anti-cracking and concrete, which is applied in the field of concrete, can solve the problems of concrete cracking resistance and durability that cannot meet the market demand, and achieve the effect of increasing the heat release rate of hydration, preventing non-load cracks, and improving uniformity

Inactive Publication Date: 2019-02-15
蚌埠市方阵商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the crack resistance and durability of concrete for tunnels cannot meet the market demand, and further research and improvement are needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of durable anti-cracking concrete for tunnels proposed by the present invention, its raw materials include by weight: 320 parts of Portland cement, 30 parts of silica fume powder, 55 parts of slag powder, 850 parts of sand, 25 parts of latex powder, and 900 parts of fine stones 4 parts, polypropylene fiber 4 parts, carbon fiber 3 parts, polyacrylonitrile fiber 2 parts, ceramic fiber 3 parts, polycarboxylate water reducer 4 parts, air-entraining agent 0.06 parts, accelerator 4 parts, water 125 parts.

Embodiment 2

[0020] A kind of durable anti-cracking concrete for tunnels proposed by the present invention, its raw materials include by weight: 420 parts of Portland cement, 45 parts of silica fume powder, 40 parts of slag powder, 950 parts of sand, 35 parts of latex powder, and 1000 parts of fine stones 6 parts, polypropylene fiber 6 parts, carbon fiber 2 parts, polyacrylonitrile fiber 3 parts, ceramic fiber 1.5 parts, polycarboxylate superplasticizer 5.5 parts, air-entraining agent 0.12 parts, accelerator 5 parts, water 160 parts.

[0021] Wherein, the length of polypropylene fiber is 12mm;

[0022] The length of polyacrylonitrile fiber is 10mm;

[0023] The fineness modulus of the sand is 3.2, the moisture content is 4.5%, and the mud content is not more than 2.0wt%;

[0024] The air-entraining agent is composed of rosin powder and sodium alkylbenzene sulfonate in a weight ratio of 1:2;

[0025] The particle size of latex powder is 80 mesh;

[0026] The polycarboxylate water reducer...

Embodiment 3

[0029] A kind of durable anti-cracking concrete for tunnels proposed by the present invention, its raw materials include by weight: 380 parts of Portland cement, 38 parts of silica fume powder, 48 parts of slag powder, 900 parts of sand, 30 parts of latex powder, and 950 parts of fine stones 5 parts of polypropylene fiber, 2.5 parts of carbon fiber, 2.5 parts of polyacrylonitrile fiber, 2.2 parts of ceramic fiber, 4.8 parts of polycarboxylate water reducer, 0.1 part of air-entraining agent, 4.5 parts of accelerator, and 145 parts of water.

[0030] Wherein, the length of polypropylene fiber is 13mm;

[0031] The length of polyacrylonitrile fiber is 9mm;

[0032] The fineness modulus of the sand is 3.4, the water content is 4.8%, and the mud content is 1.5wt%;

[0033] The air-entraining agent is composed of rosin powder and sodium alkylbenzene sulfonate in a weight ratio of 1.2:2.5;

[0034] The particle size of latex powder is 90 mesh;

[0035] The polycarboxylate water re...

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Abstract

The invention discloses durable anti-cracking concrete for a tunnel. The durable anti-cracking concrete comprises the raw materials of silicate cement, silica fume powder, slag powder, sand, latex powder, fine stones, polypropylene fiber, carbon fiber, polyacrylonitrile fiber, ceramic fiber, a polycarboxylic acid water reducing agent, an air entraining agent, an accelerator and water. The durableanti-cracking concrete for the tunnel provided by the invention has the advantages of good workability, good cracking resistance, durability and the like.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a durable and anti-cracking concrete for tunnels. Background technique [0002] Concrete is the most used building material today, and high-performance concrete represents the development direction of concrete technology. In recent years, with the rapid development of the domestic construction industry, higher requirements have been placed on the performance requirements of concrete such as crack resistance and durability. At present, the crack resistance and durability of concrete for tunnels cannot meet the market demand, and further research and improvement are needed. Contents of the invention [0003] Based on the technical problems in the background technology, the present invention proposes a durable anti-cracking concrete for tunnels, which has good workability, good cracking resistance and durability. [0004] A kind of durable anti-cracking concrete for tunnels pro...

Claims

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Application Information

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IPC IPC(8): C04B28/04C08F283/06C08F220/20C08F220/06C08F228/02C08F220/58C04B111/34
CPCC04B28/04C08F283/065C04B2111/343C04B18/146C04B18/141C04B14/06C04B24/24C04B14/02C04B16/0633C04B16/0658C04B14/386C04B14/46C04B24/165C04B24/34C04B24/20C04B2103/12C04B22/002C08F220/585
Inventor 袁保强袁保锋车增富李仁成邵强
Owner 蚌埠市方阵商品混凝土有限公司
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