Concrete made by secondary utilization of construction slag

A technology for concrete and stone treatment, applied in the field of concrete, can solve the problems of insufficient crack resistance and cracking of concrete, and achieve the effects of reducing discharge and burial, protecting the ecological environment, and reducing the impact of the environment.

Inactive Publication Date: 2019-10-25
谢谋兵
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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 kind of concrete manufactured by secondary utilization of construction slag, which solves the problem that the crack resistance of traditional concrete is not enough and it is easy to cause cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a kind of concrete produced by secondary utilization of construction slag, including the following components by weight: 170 parts of water, 230 parts of cement, 30 parts of fly ash, 600 parts of treated sand, 1100 parts of treated stone, anti-cracking 0.7 parts of fiber, 11 parts of UNF-4 retarded superplasticizer;

[0025] The method for obtaining processing sand and processing stone comprises the following steps:

[0026] S1: Recycling construction slag, separating out the objects whose strength reaches the standard and using mechanical or manual removal of steel bars; after crushing the objects whose strength is not up to the standard in the construction slag, they can be made into fire bricks together with the mortar obtained after the high-pressure cleaning and crushing ;

[0027] S2: High-pressure cleaning and crushing of the separated objects whose strength reaches the standard;

[0028] S3: Separate the crushed stones from the cement ...

Embodiment 2

[0032] This embodiment provides a kind of concrete manufactured by secondary utilization of construction slag, including the following components in parts by weight: 215 parts of water, 550 parts of cement, 110 parts of fly ash, 900 parts of treated sand, 1000 parts of treated stone, anti-cracking 0.3 parts of fiber, 6 parts of UNF-4 retarded superplasticizer;

[0033] The method for obtaining processing sand and processing stone comprises the following steps:

[0034] S1: Recycling construction slag, separating out the objects whose strength reaches the standard and using mechanical or manual removal of steel bars; after crushing the objects whose strength is not up to the standard in the construction slag, they can be made into fire bricks together with the mortar obtained after the high-pressure cleaning and crushing ;

[0035] S2: High-pressure cleaning and crushing of the separated objects whose strength reaches the standard;

[0036] S3: Separate the crushed stones fro...

Embodiment 3

[0040] This embodiment provides a kind of concrete manufactured by secondary utilization of construction slag, including the following components in parts by weight: 195 parts of water, 400 parts of cement, 80 parts of fly ash, 750 parts of treated sand, 1050 parts of treated stone, anti-cracking 0.5 parts of fiber, 8 parts of UNF-4 retarded superplasticizer;

[0041] The method for obtaining processing sand and processing stone comprises the following steps:

[0042] S1: Recycling construction slag, separating out the objects whose strength reaches the standard and using mechanical or manual removal of steel bars; after crushing the objects whose strength is not up to the standard in the construction slag, they can be made into fire bricks together with the mortar obtained after the high-pressure cleaning and crushing ;

[0043] S2: High-pressure cleaning and crushing of the separated objects whose strength reaches the standard;

[0044] S3: Separate the crushed stones from...

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PUM

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Abstract

The invention discloses concrete made by secondary utilization of construction slag. The concrete is prepared from the following components in parts by weight: 170-215 parts of water, 230-550 parts ofcement, 30-110 parts of fly ash, 600-900 parts of treated sand, 1000-1100 parts of treated stone, 0.3-0.7 part of crack resistant fiber and 6-11 parts of an additive. The construction slag is secondarily utilized to separate out sand and stone to make the concrete, on the one hand, the discharge and burying of the construction waste slag can be reduced, and the ecological environment is protected, on the other hand, the concrete made of the treated stone and the treated sand separated from the construction waste slag has higher failure load and pressure resistance than traditional concrete, wherein the failure load can reach 220 KN or above, and the average value of the compressive strength is about 27 MPa.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to concrete produced by secondary utilization of construction slag. Background technique [0002] Concrete is also called concrete, and the washed paste is used to burn fire bricks. Concrete and fire bricks are indispensable main materials for construction. They are easy to use. Traditional concrete is easy to crack when trimming subway platforms, and serious water leakage will occur after cracking Phenomenon, plugging operation is required after water leakage, not only the cost of plugging is high, but also easy to corrode the steel bars, which will greatly reduce the life of the main structure after the steel bars are corroded. [0003] On the other hand, a large amount of construction slag is buried every year in our country. A large amount of construction slag is likely to pollute the environment. If the construction slag can be reused, the ecological environment can be protect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2201/20C04B2201/50C04B18/08C04B18/16C04B2103/302C04B20/0048
Inventor 谢谋兵
Owner 谢谋兵
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