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Anti-crack concrete

A concrete and aggregate technology, applied in the field of anti-crack concrete, can solve the problems of affecting the service life of concrete structures, reducing the bearing capacity of concrete structures, being easily eroded and scoured, etc., so as to improve workability, increase corrosion resistance, and improve workability. Effect

Inactive Publication Date: 2017-01-04
JIANGSU BAIRUIJI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Concrete has been used as a building material for more than 100 years. The advantages of concrete are high compressive strength, easy to obtain materials, easy to shape and low price, and can be combined with other materials to make various heavy fixtures. However, the Achilles heel of concrete is tensile strength. Low strength and easy to crack, thus reducing the bearing capacity of the concrete structure and shortening the service life, becoming a hidden danger of various disasters
[0003] In the traditional technology, the crack resistance is increased by adding steel fibers, but it is easy to be eroded and scoured in complex environments, which affects the service life of concrete structures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Component weight ratio: 2.5 parts of aggregate, 20 parts of ordinary Portland cement, 1 part of steel fiber (length 1mm), 1 part of naphthalene-based superplasticizer, 10 parts of polypropylene alcohol fiber, and 1 part of phosphorus slag powder.

[0016] Aggregate includes fine aggregate and coarse aggregate; the mass ratio of fine aggregate to coarse aggregate is 2:1; fine aggregate is sand in zone II with a fineness modulus of 2.6-3.0, and the mud content is less than 3%; The coarse aggregate is made of basalt gravel with a particle size of 10mm-20mm.

Embodiment 2

[0018] Component weight ratio: 30 parts of aggregate, 90 parts of ordinary phosphate cement, 5 parts of carbon fiber (length 5mm-15mm), 1 part of naphthalene-based superplasticizer, 2 parts of water-soluble binder resin, 1.5 parts of polyol, 15 parts of polypropylene alcohol fiber, 2 parts of shrinkage reducing agent, and 3 parts of phosphorus slag powder.

Embodiment 3

[0020] Components by weight: 10 parts of aggregate, 70 parts of cement (ordinary Portland cement, high alumina cement and phosphate cement mixed at a weight ratio of 1:1:1), 2 parts of carbon fiber, naphthalene-based high-efficiency water-reducing 0.5 parts of agent, 1 part of water-soluble binder resin, 0.5 parts of polyol, 0.5 parts of polyacrylate, 13 parts of polyacryl alcohol fiber, 1 part of shrinkage reducing agent, and 1.5 parts of phosphorus slag powder.

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Abstract

The invention discloses anti-crack concrete, prepared from the following components by a weight ratio: 2.5-30 parts of aggregate, 20-90 parts of cement, 1-5 parts of steel fiber or carbon fiber, 1-10 parts of an additive, 10-15 parts of polypropylene glycol fiber and 1-3 parts of phosphorus slag powder, wherein the lengths of the steel fiber and the carbon fiber are 1-20mm. The anti-crack concrete is high in crack resistance, and a prepared concrete product has long service life.

Description

technical field [0001] The invention belongs to the application of building materials, in particular to a crack-resistant concrete. Background technique [0002] Concrete has been used as a building material for more than 100 years. The advantages of concrete are high compressive strength, easy to obtain materials, easy to shape and low price, and can be combined with other materials to make various heavy fixtures. However, the Achilles heel of concrete is tensile strength. Low strength, easy to crack, thereby reducing the bearing capacity of the concrete structure and shortening the service life, becoming a hidden danger of various disasters and accidents. [0003] In the traditional technology, the crack resistance is increased by adding steel fibers, but it is easy to be eroded and scoured in complex environments, which affects the service life of concrete structures. Contents of the invention [0004] The object of the present invention is to solve the defects in the ...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B28/04
CPCC04B28/34C04B28/04C04B2111/343C04B14/06C04B14/48C04B2103/302C04B16/0616C04B18/145C04B14/386C04B24/24C04B24/02C04B7/02C04B7/32C04B24/26
Inventor 王兴文徐荣平徐意
Owner JIANGSU BAIRUIJI NEW MATERIAL
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