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Composite sound absorption sunk fence and manufacturing method thereof

A manufacturing method and technology of low walls, applied in noise absorbing devices, buildings, etc., can solve problems such as discomfort of passengers in vehicles, damage to natural scenery along railway lines, cumbersome maintenance and repairs, etc., and achieve smooth surface, high cylinder compressive strength, and mechanical good performance

Active Publication Date: 2018-05-08
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country has built a large number of sound barriers along the railway line, the height of which is 3 meters. Because the height of this type of sound barrier is too high, it is easy to cause discomfort to the passengers in the car, and it has caused great damage to the natural scenery along the railway line. Maintenance and repair are more cumbersome

Method used

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  • Composite sound absorption sunk fence and manufacturing method thereof
  • Composite sound absorption sunk fence and manufacturing method thereof
  • Composite sound absorption sunk fence and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] First design the external dimensions of the composite sound-absorbing low wall length L×thickness D×height H=1000mm×200mm×1000mm, manufacture and produce the A mold with the sound-absorbing layer wall and the composite sound-absorbing low wall according to the size of the composite sound-absorbing low wall For mold B, adjust the mixing ratio of the mixing equipment, and then put the raw materials of the sound-absorbing layer into the mixing equipment according to the following parts by weight and mix them evenly: 100 parts of ordinary silicate 42.5# cement, construction waste with a particle size distribution within the range of 1~10mm 1200 parts of non-fired ceramsite and fly ash, 0.2 part of polycarboxylate superplasticizer, 0.2 part of polyester fiber, 0.1 part of redispersible latex powder, 0.1 part of antifungal agent and 50 parts of water; stir well Pour the final sound-absorbing layer raw material mixture into mold A, vibrate and press, control the compression rat...

Embodiment 2

[0040] First design the external dimensions of the composite sound-absorbing low wall. Length L×thickness D×height H=500mm×100mm×600mm. According to the size of the composite sound-absorbing low wall, A mold with sound-absorbing layer and C with sound-insulating layer are produced. Then put the raw materials of the sound-absorbing layer into the mixing equipment according to the following parts by weight and mix them evenly: 100 parts of ordinary silicate 42.5# cement, construction waste and fly ash unburned ceramsite with a particle size distribution within the range of 1-10mm 1800 parts, 0.5 parts of polycarboxylate superplasticizer, 1 part of polyester fiber, 0.4 parts of redispersible latex powder, 0.5 parts of antifungal agent and 35 parts of water; pour the sound-absorbing layer raw material mixture into A In the mould, vibrate and press, control the compression ratio to 20%, and form the sound-absorbing layer on the second day of maintenance, remove the mold A and clean ...

Embodiment 3~ Embodiment 5

[0044] Embodiment 3-Embodiment 5 is a transformation of Embodiment 1 and Embodiment 2 of the present invention, and the amount of each component that makes up the raw material of the sound-absorbing layer and the raw material of the sound-insulating layer is compared with that of Embodiment 1 and Embodiment 2. It can be increased or decreased. Generally, the value range of each component (parts by weight) of the sound-absorbing layer is:

[0045] 100 parts of cement, 1200~1800 parts of unburned ceramsite, 0.2~0.5 parts of polycarboxylate superplasticizer, 0.2~1 part of polyester fiber, 0.1~0.5 part of redispersible latex powder, 0.1~0.5 part of antifungal agent and 20-50 parts of water; the cylinder compressive strength of the unfired ceramsite is ≥6MPa, the roundness of the shape is ≥95%, and the particles are complete.

[0046] The value range of each component (parts by weight) of the general sound insulation layer is:

[0047] 100 parts of cement, 10~20 parts of sulphoalu...

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Abstract

The invention discloses a composite sound absorption sunk fence. The composite sound absorption sunk fence is composed of a sound absorbing layer and a sound insulating layer, wherein the sound absorbing layer is formed by pressing ceramsite concrete half-dried materials, the sound insulating layer is formed by blending sound insulating materials, and the thickness of the sound absorbing layer isgreater than that of the sound insulating layer; the sound absorption layer is mainly formed by blending and pressing cement, unfired ceramsite, polycarboxylate superplasticizer, polyester fibers, redispersible latex powder, mildew preventive and water; the sound insulating layer is mainly formed by blending and pressing cement, sulphate aluminium cement, coal ash, quartz sand, an HEA expanding agent, a water reducing agent, 5111L latex powder, fibers, a defoaming agent, aluminite powder, sodium gluconate and water. The composite sound absorption sunk fence has the advantages of being excellent in noise reduction capability and mechanical performance, capable of beautifying the spatial environment and the like. The manufacturing method of the composite sound absorption sunk fence is simplein process and scientific in production and forming process, and a die of the product can be designed according to the required shape for compression molding.

Description

technical field [0001] The invention relates to a sound-absorbing device, in particular to a composite sound-absorbing low wall and a manufacturing method thereof. Background technique [0002] my country has built a large number of sound barriers along the railway line, the height of which is 3 meters. Because the height of this type of sound barrier is too high, it is easy to cause discomfort to the passengers in the car, and it has caused great damage to the natural scenery along the railway line. Maintenance and repair are more cumbersome. Now it is generally believed in the industry that the most effective way to control noise is to block the propagation path from the sound source to the sound receiving point. In my country's subway design code GB50157-2003, Chapter 4 of the regulations on vehicle boundaries stipulates: " When setting up sound barriers on the side of the ground and elevated lines, the distance between the sound barrier and the equipment limit shall not b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/06E01F8/00C04B111/52
CPCC04B28/04C04B28/06C04B2111/52C04B2201/50E01F8/0005C04B18/16C04B18/08C04B2103/302C04B16/0683C04B2103/0057C04B2103/67C04B7/02C04B14/06C04B24/24C04B2103/50C04B22/04C04B24/10
Inventor 周红梅朱万旭高逸豪卜炬鹏张瑞东
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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