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A kind of multi-layer structure ceramsite sound-absorbing board for sound barrier and its preparation method

A multi-layer structure, sound-absorbing board technology, applied in chemical instruments and methods, lamination, layered products, etc., can solve problems such as insufficient mechanical and acoustic properties, and achieve cost reduction, weight reduction, and reduction of adhesive dosage. Effect

Active Publication Date: 2021-09-21
CHINA RAILWAY DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of insufficient mechanical and acoustic properties caused by the single-layer ceramsite sound-absorbing board products used in metal sound barriers, the present invention proposes a multi-layer structure ceramsite sound-absorbing board for sound barriers. The ceramsite sound-absorbing panel is composed of ceramsite material layers with different particle size gradations. It uses a large number of porous structures inside the multi-layer structure ceramsite sound-absorbing panel to achieve good sound absorption performance. Cooperate to achieve excellent mechanical properties

Method used

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  • A kind of multi-layer structure ceramsite sound-absorbing board for sound barrier and its preparation method
  • A kind of multi-layer structure ceramsite sound-absorbing board for sound barrier and its preparation method
  • A kind of multi-layer structure ceramsite sound-absorbing board for sound barrier and its preparation method

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preparation example Construction

[0048] The preparation method of the above-mentioned multi-layer structure ceramsite sound-absorbing board for sound barrier comprises the following steps:

[0049] (1) Prepare each layer of ceramsite sound-absorbing panels separately: After fully mixing the ceramsite aggregate and cementitious material of each layer of ceramsite sound-absorbing panels in proportion, press and cast them into panels;

[0050] (2) After the curing and demoulding of each layer of ceramsite sound-absorbing panels, the multi-layer structure ceramsite sound-absorbing panels are bonded through cementitious materials.

[0051] Another preparation method of the above-mentioned multi-layer structure ceramsite sound-absorbing board for sound barriers includes the following steps:

[0052] (1) Fully mix the ceramsite aggregate and cementitious material of each layer of ceramsite sound-absorbing panels in proportion;

[0053] (2) Lay each layer in turn and press it into a multi-layer structure ceramsite s...

Embodiment 1

[0056] There are 3 layers of multi-layer structure ceramsite sound-absorbing panels, with a total thickness of 70mm. From the outside to the inside (the sound source side is the inside), the order is: No. 1 ceramsite board (particle size5mm), thickness 20mm. Specific as figure 1 with figure 2 shown.

[0057] The proportion of each component in No. 1 ceramsite board is: ceramsite accounts for 88%, Portland cement accounts for 9% (water-cement ratio 0.8:1), admixtures (fly ash, polycarboxylate reducing Water agent, air-entraining agent, fiber, etc.) accounted for 3%.

[0058] The proportion of each component in the No. 2 ceramsite board is: ceramsite accounts for 85%, Portland cement accounts for 12% (water-cement ratio 1:1), admixtures (fly ash, polycarboxylate Water agent, air-entraining agent, fiber, etc.) accounted for 3%.

[0059] The proportion of each component in No. 3 ceramsite board is: ceramsite accounts for 80%, Portland cement accounts for 17% (water-cement ra...

Embodiment 2

[0062] There are 3 layers of multi-layer structure ceramsite sound-absorbing panels, with a total thickness of 60mm. From the outside to the inside (the sound source side is the inside), the order is: No. 1 ceramsite board (particle size 5mm), thickness 30mm; No. 2 ceramsite board (particle size) diameter 2-5mm), thickness 20mm.

[0063] The proportion of each component in No. 1 ceramsite board is: ceramsite accounts for 88%, Portland cement accounts for 9% (water-cement ratio 0.8:1), admixtures (fly ash, polycarboxylate reducing Water agent, air-entraining agent, fiber, etc.) accounted for 3%.

[0064] The proportion of each component in No. 3 ceramsite board is: ceramsite accounts for 80%, Portland cement accounts for 17% (water-cement ratio 1:1), admixtures (fly ash, polycarboxylate Water agent, air-entraining agent, fiber, etc.) accounted for 3%.

[0065] The proportion of each component in the No. 2 ceramsite board is: ceramsite accounts for 85%, Portland cement accoun...

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Abstract

The invention discloses a multi-layer structure ceramsite sound-absorbing board for sound barriers and a preparation method thereof. Each layer of ceramsite sound-absorbing board is composed of the following raw materials in weight percentage: ceramsite aggregate 40%-92%, glue Concrete material 8%~60%; each layer of ceramsite sound-absorbing board is one of No. 1 ceramsite board, No. 2 ceramsite board, No. 3 ceramsite board or No. 4 ceramsite board; No. 1 ceramsite board The ceramsite aggregate is the No. 1 ceramsite with a particle size of less than 2 mm, the ceramsite aggregate of the No. 2 ceramsite board is the No. No. 3 ceramsite with a diameter greater than 5 mm, and the ceramsite aggregate of No. 4 ceramsite board is No. 4 ceramsite mixed with different particle sizes; among No. 4 ceramsite: No. 1 ceramsite accounts for 0% to 90%, No. 2 ceramsite Ceramsite accounts for 0% to 90%, and No. 3 ceramsite accounts for 0% to 90%. The invention utilizes a large number of porous structures inside the multi-layer ceramsite sound-absorbing board to realize good sound-absorbing performance, and realizes excellent mechanical performance by cooperating with gelling materials.

Description

technical field [0001] The invention belongs to the technical field of sound-absorbing boards for sound barriers, in particular to a multi-layer structure ceramsite sound-absorbing board for sound barriers and a preparation method thereof. Background technique [0002] With the development of society and the improvement of people's living standards, environmental noise pollution is becoming more and more serious. Sound barrier is an effective noise reduction method to control outdoor noise transmission, and it is widely used in environmental noise control. Sound barriers are mainly divided into metal sound barriers and non-metal sound barriers in terms of materials. Because metal sound barriers have the characteristics of light weight, long shell life, and good landscape effects, they have become the main choice of sound barriers. The metal sound barrier structure is as follows: a metal shell is used to form a cavity, and sound-absorbing materials are fixed inside to form a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B28/06C04B28/10C04B28/14C04B28/26C04B26/26C04B26/22C04B26/02C04B18/02B32B9/00B32B9/04B32B7/12B32B37/10B32B37/12C04B111/52
CPCB32B7/12B32B9/005B32B9/04B32B37/10B32B37/1284B32B2307/102B32B2307/3065B32B2307/712B32B2307/714B32B2307/718B32B2307/7265C04B18/023C04B26/02C04B26/22C04B26/26C04B28/04C04B28/06C04B28/10C04B28/14C04B28/26C04B2111/00612C04B2111/52C04B2201/50C04B18/08C04B2103/302C04B2103/304C04B20/0048
Inventor 潘晓岩常亮苏卫青韩珈琪沈志军韩桂波朱正清高潮
Owner CHINA RAILWAY DESIGN GRP CO LTD
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