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Cement-based perlite composite sound barrier

A perlite and composite sound technology, applied in noise absorption devices, buildings, etc., can solve the problems of slow project progress, high cost, long cycle, etc., and achieve the effect of improving compressive strength and prolonging service life.

Inactive Publication Date: 2013-01-02
郭云驰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sound absorption coefficient of the wood foam cement sound-absorbing board made by this method is about 0.62-0.72. Since the wood chips need to be pre-soaked, the production process is complicated and the cycle is long
When the above two kinds of sound-absorbing materials are used as sound-absorbing barriers, they must be combined with high-strength backboards because of their low flexural strength and are easy to break. The cost is high, and the progress of the project is slow and labor-intensive.
[0009] Many of the above shortcomings have greatly restricted the application and promotion of cement-based sound-absorbing panels in sound-absorbing and insulating barrier projects.

Method used

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  • Cement-based perlite composite sound barrier

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Effect test

Embodiment 1

[0023] Embodiment one: from figure 1 It can be seen from the figure that a cement-based perlite composite sound barrier is composed of perlite layer 1 and ceramsite concrete layer 3, and is composed of perlite, glue, cement, water and yellow sand by weight 1:0.048:1.8:3.8:2.7 The ratio is mixed to form a perlite mixture, and the ceramsite, cement, water and yellow sand are mixed in a weight ratio of 2:1.8:3.8:2.7 to form a ceramsite concrete mixture. Then pour the perlite mixture into the mold and pave it, and finally add the ceramsite concrete mixture to pave it, press the whole mold under a certain pressure, and release the mold after maintaining the pressure. The thickness of the perlite layer 1 is 7cm, and the thickness of the ceramsite concrete layer 3 is 5.5cm; the particle size of the perlite is 3mm, and the particle size of the ceramsite is 20mm.

Embodiment 2

[0024] Embodiment 2: A cement-based perlite composite sound barrier, consisting of perlite layer 1 and ceramsite concrete layer 3, composed of perlite, glue, cement, water and yellow sand in a weight ratio of 1:0.05:2:4:3 Mix to form a perlite mixture, and mix ceramsite, cement, water and yellow sand in a weight ratio of 2:2:4:3 to form a ceramsite concrete mixture. Then pour the perlite mixture into the mold and pave it, and finally add the ceramsite concrete mixture to pave it, press the whole mold under a certain pressure, and release the mold after maintaining the pressure. The thickness of the perlite layer 1 is 8cm, and the thickness of the ceramsite concrete layer 3 is 6cm; the particle size of the perlite is 4mm, and the particle size of the ceramsite is 25mm.

Embodiment 3

[0025] Embodiment 3: A cement-based perlite composite sound barrier, consisting of perlite layer 1 and ceramsite concrete layer 3, composed of perlite, glue, cement, water and yellow sand in a weight ratio of 1:0.052:2.2:4.2:3.3 Mix to form a perlite mixture, and mix ceramsite, cement, water and yellow sand in a weight ratio of 2:2.2:4.2:3.3 to form a ceramsite concrete mixture. Then pour the perlite mixture into the mold and pave it, and finally add the ceramsite concrete mixture to pave it, press the whole mold under a certain pressure, and release the mold after maintaining the pressure. The thickness of the perlite layer 1 is 9cm, and the thickness of the ceramsite concrete layer 3 is 7cm; the particle size of the perlite is 5mm, and the particle size of the ceramsite is 30mm.

[0026] In order to improve the strength of the sound barrier, a steel mesh 2 is arranged in the perlite layer 1 .

[0027] In addition, surface spraying can be carried out according to customer re...

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Abstract

The invention discloses a cement-based perlite composite sound barrier, applied to noise prevention and control engineering for railway and urban rail transit projects. The sound barrier comprises a perlite layer and a ceramisite concrete layer. The perlite layer comprises perlite, glue, cement, water and sand at weight ratio of 1:(0.048-0.052):(1.8-2.2):(3.8-4.2):(2.7-3.3). The ceramisite concrete layer comprises ceramisite, cement, water and sand at weight ratio of 2:(1.8-2.2):(3.8-4.2):(2.7-3.3). The invention utilizes cementing force of cement itself to bond the perlite layer and ceramisite concrete layer, and utilizes self porosity of perlite to realize noise reduction effect, with noise reduction coefficient of above 0.65, and sound insulation amount of above 27 dB. The sound barrier has the advantages of good sound absorbability, high bending and impact strength, good freeze-thaw resistance, and stable material chemical stability.

Description

technical field [0001] The invention relates to a cement-based sound-absorbing board mainly used in noise prevention and control projects in railway and urban light rail projects, in particular to a cement-based perlite composite sound barrier. Background technique [0002] With the rapid development of my country's economy and the rapid advancement of industrialization and urbanization. In recent years, the number of railways, highways, subways and urban light rails has increased day by day. While it is convenient for people to travel, it has become the fourth largest pollution after air pollution, water pollution and solid waste pollution. The problem of noise pollution control It has become a social problem to be solved. Among the various methods for the prevention and control of noise generated in traffic facilities, setting up sound-absorbing and insulating barriers is a relatively effective method. However, the existing sound-absorbing and insulating barriers have lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00E01F8/00
Inventor 郭云驰
Owner 郭云驰
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