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Crack-resistant reinforced concrete

A reinforced concrete technology, applied in the field of building materials, can solve the problems of unsatisfactory concrete crack resistance, achieve obvious crack resistance, weaken corrosion, improve tensile strength and crack resistance

Active Publication Date: 2018-05-01
CHONGQING VOCATIONAL INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a crack-resistant reinforced concrete to solve the problem of unsatisfactory crack-resistant effect of existing concrete in the background technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 (do not add fiber and also do not add the concrete that three-dimensional metal structure forms)

[0029] Take 1465 parts of aggregate, 185 parts of ordinary portland cement, 80 parts of fly ash, 50 parts of mineral powder, 25 parts of silica fume, 5 parts of cement mortar defoamer, 10 parts of coupling agent, stir and mix to form a fiber-free Three-dimensional metal structure of concrete.

Embodiment 2

[0030] Embodiment 2 (adding the concrete that fiber forms)

[0031] Take 245 parts of alkali-resistant glass fiber, 1465 parts of aggregate, 185 parts of ordinary Portland cement, 80 parts of fly ash, 50 parts of mineral powder, 25 parts of silica fume, 5 parts of cement mortar defoamer, and 10 parts of coupling agent , stirring and mixing to form fiber concrete.

Embodiment 3

[0032] Embodiment 3 (adding the crack resistance reinforced concrete formed by three-dimensional metal structure)

[0033] Take 245 parts of three-dimensional metal structure, 1465 parts of aggregate, 185 parts of ordinary portland cement, 80 parts of fly ash, 50 parts of mineral powder, 25 parts of silica fume, 5 parts of cement mortar defoamer, 10 parts of coupling agent, Agitation mixes to form crack-resistant reinforced concrete.

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Abstract

The invention belongs to the field of building materials, and particularly discloses crack-resistant reinforced concrete. The crack-resistant reinforced concrete comprises the following components: athree-dimensional metal structure, an aggregate, low-alkali cement, fly ash, mineral powder, silica fume, a cement mortar defoaming agent and a coupling agent; the three-dimensional metal structure comprises a sphere and a ring plate; the sphere comprises an upper hemisphere and a lower hemisphere; a connecting rod is arranged on the upper hemisphere; the ring plate is arranged on the connecting rod; the lower hemisphere is provided with a connecting groove; and the connecting groove is connected with the connecting rod. The crack-resistant effect of the crack-resistant reinforced concrete inthe scheme is obvious, the tensile strength and anti-cracking strength are greatly improved, and the concrete can be used to prevent early cracks during a casting period; the tensile strength and theanti-cracking effect are improved during the solidification of the concrete, original cracks of the concrete interface are reduced and even eliminated, and the crack-resistant effect is achieved; after the solidification, further expansion of the cracks is prevented, the penetration time of the cracks is prolonged, and deformation of the three-dimensional metal structure can be utilized to preventfurther expansion of the cracks, so that the crack resistance effect is further enhanced.

Description

technical field [0001] The invention belongs to the field of building materials. Background technique [0002] At present, in engineering construction, in order to improve the crack resistance and durability of concrete, a certain amount of fiber is added to the concrete to form a fiber concrete. Before the construction of the project, the fiber is mixed into the concrete for mixing, and then the concrete mixed with the fiber is poured to the required construction site. Due to the short length of the fibers, they are randomly distributed in the concrete, which can hinder the expansion of cracks inside the concrete, thereby improving the tensile, bending, and shear strength of the concrete to a certain extent, and improving the durability of the concrete. . [0003] However, there are the following problems in the prior art: since most of the fibers currently used are in linear shape and their length is very short, after being mixed into concrete, the force on the fibers is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/34C04B20/00
CPCC04B14/34C04B20/0008C04B28/04C04B18/08C04B18/141C04B18/146C04B2103/50C04B2103/0068
Inventor 李红立仝童柴彬堂
Owner CHONGQING VOCATIONAL INST OF ENG
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