Self-dense concrete of mixed fiber with fly ash in use for prefabricated acoustic barrier

A technology of self-compacting concrete and hybrid fiber, which is applied in the field of configuration of fiber concrete and fly ash concrete, self-compacting concrete, hybrid fiber fly ash self-compacting concrete, achieving significant technical advantages, simple production process and cost reduction

Inactive Publication Date: 2007-02-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a new type of structural material with excellent working performance, shrinkage crack resistance and toughness, which can effectively r...

Method used

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  • Self-dense concrete of mixed fiber with fly ash in use for prefabricated acoustic barrier
  • Self-dense concrete of mixed fiber with fly ash in use for prefabricated acoustic barrier
  • Self-dense concrete of mixed fiber with fly ash in use for prefabricated acoustic barrier

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Embodiment

[0028] A hollow sound-absorbing barrier with grids is poured using the self-compacting concrete of the hybrid fiber fly ash of the present invention. In order to compare and study different properties, ordinary fly ash self-compacting concrete without fiber, fly ash self-compacting concrete with glass fiber alone and fly ash self-compacting concrete with polypropylene fiber alone are also configured. Table 1 is the mix ratio of four kinds of concrete, the data unit in the table is kg / m 3 . Table 2 is the parameter description of each component material of the concrete of the embodiment.

[0029] concrete type

[0030] Material

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Abstract

This invention relates to preparation and application of high-performance and anti-crack self-tight concrete reinforced with fiber and fly ashes. This invention uses fly ashes as a substitute for part of cement, and high-alkali-resistant glass fiber modified polypropylene fiber as the reinforcing materials. Besides, an appropriate quantity of water-reducer is used to improve the processability of the mixture. The obtained self-tight concrete has such advantages as high performance and good anti-crack property. The method for preparing sound barrier from the self-tight concrete is simple and needs no complicated equipments. The obtained sound barrier has better performance when compared with conventional concrete sound barriers, metal-plate sound barriers, and plastic organic glass sound barriers.

Description

technical field [0001] The invention belongs to the technical field of concrete in civil engineering, and relates to self-compacting concrete, fiber concrete and fly ash concrete, in particular to the configuration and application of hybrid fiber fly ash self-compacting concrete with excellent working performance and shrinkage and crack resistance . Background technique [0002] Currently, the noise of cars and trains on roads, highways or railways passing through town is increasingly disturbing adjacent residential areas. In order to effectively reduce noise pollution, the construction of sound barriers has become increasingly popular. [0003] According to the material, the sound barrier can be divided into concrete, metal plate, plastic plexiglass and green belt. Among them, the sound barrier of the metal plate is easily corroded. In the environment of chloride salt, the connection between the sound barrier of the metal plate and the foundation is often damaged. It must...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/44C04B18/08C04B16/06C04B24/24
CPCY02W30/91
Inventor 丁一宁刘思国刘岳鑫陈剑于洪涛
Owner DALIAN UNIV OF TECH
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