Recycled concrete with highly effective damping property

A recycled concrete and damping technology, which is applied in the field of building materials, can solve the problems of poor bonding ability of fibers and cement, unfavorable social development, and affecting people's lives, etc., to improve strength and toughness, improve impregnation and permeability, and increase specific surface area. Effect

Inactive Publication Date: 2016-07-20
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Concrete technology has brought historical innovation to architecture, but with the development of time and the continuous updating of structural materials in the construction industry, more and more concrete buildings have been demolished, followed by various waste concrete and a large amount of land Occupied, the natural environment is destroyed by a large amount of construction waste, which seriously affects people's lives and is not conducive to social development. However, at present, only recycled coarse aggregate made of waste concrete has many micro cracks and micro voids, and Poor bonding ability with fiber and cement

Method used

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  • Recycled concrete with highly effective damping property
  • Recycled concrete with highly effective damping property
  • Recycled concrete with highly effective damping property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing recycled concrete with high-efficiency damping performance, comprising the following steps:

[0030] The first step: screening of fine aggregate

[0031] According to the requirements of the standard JGJ52-2006 on the gradation of fine aggregate particles, the fine aggregate that meets the requirements of concrete preparation is screened out.

[0032]

[0033] Table 1 Results of fine aggregate particle grading test

[0034] The analysis results are shown in Table 1. It can be seen that the particle size distribution of the fine aggregate is good, so the fine aggregate is used to prepare recycled concrete.

[0035] Step 2: Pretreatment of Coarse Aggregate

[0036] The gravel is used as the coarse aggregate, and the coarse aggregate is mechanically crushed, impurity removed, cleaned, dried, and screened according to the requirements of the "General Concrete Sand and Stone Quality and Testing Method Standard" for coarse aggregate to ensure Coar...

Embodiment 2

[0049] A method for preparing recycled concrete with high-efficiency damping performance, comprising the following steps:

[0050] The first step: screening of fine aggregate

[0051] According to the requirements of the standard JGJ52-2006 on the gradation of fine aggregate particles, the fine aggregate that meets the requirements of concrete preparation is screened out.

[0052]

[0053] Table 1 Results of fine aggregate particle grading test

[0054] The analysis results are shown in Table 1. It can be seen that the particle size distribution of the fine aggregate is good, so the fine aggregate is used to prepare recycled concrete.

[0055] Step 2: Pretreatment of Coarse Aggregate

[0056] Mix gravel and waste concrete in any ratio to form coarse aggregate, and then mechanically crush and remove impurities according to the requirements for coarse aggregate in the Standards for the Quality and Testing Methods of Sand and Stone for Ordinary Concrete , cleaning, drying, ...

Embodiment 3

[0069] A method for preparing recycled concrete with high-efficiency damping performance, comprising the following steps:

[0070] The first step: screening of fine aggregate

[0071] According to the requirements of the standard JGJ52-2006 on the gradation of fine aggregate particles, the fine aggregate that meets the requirements of concrete preparation is screened out.

[0072]

[0073] Table 1 Results of fine aggregate particle grading test

[0074] The analysis results are shown in Table 1. It can be seen that the particle size distribution of the fine aggregate is good, so the fine aggregate is used to prepare recycled concrete.

[0075] Step 2: Pretreatment of Coarse Aggregate

[0076] Mix gravel and waste concrete in any ratio to form coarse aggregate, and then mechanically crush and remove impurities according to the requirements for coarse aggregate in the Standards for the Quality and Testing Methods of Sand and Stone for Ordinary Concrete , cleaning, drying, ...

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Abstract

The invention relates to a recycled concrete with highly effective damping property, which includes screening of fine aggregate and preprocessing of coarse aggregate. According to a weight ratio, each component is weighed; all of highly effective water-reducing agent and carbon nanofibers and half weight of water are poured into an agitator and agitated at high speed, so that suspension is obtained; the other half of water, thinner and polymer emulsion are mixed, so that a mixed solution is obtained; all of cement, fine aggregate and coarse aggregate are poured into an agitator and agitated uniformly, so that a mixture is obtained; the suspension prepared in Step 4 and the mixed solution in Step 5 are added into the mixture uniformly agitated in Step 6 and agitated sufficiently, so that the recycled concrete is obtained. The invention has the advantage that while sufficiently utilizing discarded concrete, the invention also can effectively increase the physicomechanical properties of the recycled concrete.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to recycled concrete with high-efficiency damping performance. Background technique [0002] Concrete technology has brought historical innovation to architecture, but with the development of time and the continuous updating of structural materials in the construction industry, more and more concrete buildings have been demolished, followed by various waste concrete and a large amount of land It is occupied, and the natural environment is destroyed by a large amount of construction waste, which seriously affects people's lives and is not conducive to social development. However, at present, only recycled coarse aggregate made of waste concrete has many micro cracks and micro voids, and Poor bonding ability with fiber and cement. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/38C04B24/24C04B24/28
CPCC04B28/04C04B2201/50
Inventor 张世民王社良张明明刘伟
Owner XIJING UNIV
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