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Concrete acoustic material and manufacturing method thereof

A sound-absorbing material and concrete technology, which is applied in the field of noise pollution control, can solve the problems of low mechanical properties of sound-absorbing materials, complex and cumbersome production process, and low sound absorption coefficient, and achieve good sound-absorbing effect, simple manufacturing, and simple molding process.

Inactive Publication Date: 2012-07-25
LIUZHOU HANXIMING BUILDING MATERIAL DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a concrete sound-absorbing material and its manufacturing method, which can solve the problems of low mechanical properties, low sound absorption coefficient, impermeability, and complex and cumbersome production process of existing sound-absorbing materials.

Method used

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  • Concrete acoustic material and manufacturing method thereof
  • Concrete acoustic material and manufacturing method thereof
  • Concrete acoustic material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A concrete sound-absorbing material includes the following raw materials in parts by weight (1 kg per part): 100 parts of cement, 130 parts of ceramsite (grain gradation 4-8 mm: 70%, below 4 mm: 30%), polycarboxylate 1 part of acid water reducer, 0.5 part of silane water repellent, 0.25 part of polyester fiber, 0.1 part of latex powder, among which, the cement adopts PII low-alkali Portland cement with a strength grade of 52.5, and the water reducing rate of polycarboxylate water reducer More than 25%, the solid content of the silane waterproofing agent is ≥60%, the fiber length of the polyester fiber is 2-12 mm, and the latex powder is redispersible latex powder. The manufacturing method and steps of this concrete sound-absorbing material are as follows: A. Mix cement ceramsite, polycarboxylate water reducer, silane waterproofing agent, polyester fiber, and latex powder according to the above weight ratio to become dry powder; B. Make the mold according to the size req...

Embodiment 2

[0031] The manufacturing method and steps of this example are the same as those of Example 1, only the raw materials and proportions are different. The concrete sound-absorbing material in this example includes the following raw materials in parts by weight (1 kg per part): PII with a strength grade of 42.5 Portland cement 100 parts, ceramsite (grain gradation 4-8 mm: 50%, 4 mm or less: 50%) 145 parts, polycarboxylate water reducing agent 0.5 part, silane waterproofing agent 0.8 part, polyester fiber 0.2 part, 0.15 part of latex powder, and 20 parts of water.

[0032] The performance test results of the concrete sound-absorbing material prepared in this embodiment are shown in Table 2.

[0033] Table 2

[0034]

Embodiment 3

[0036] The manufacturing method and steps of this example are the same as those of Example 1, only the raw materials and proportions are different. The concrete sound-absorbing material in this example includes the following raw materials in parts by weight (1 kg per part): PO with a strength grade of 52.5 Ordinary Portland cement 100 parts, ceramsite (grain gradation 4-8 mm: 65%, below 4 mm: 35%) 155 parts, silane waterproofing agent 1 part, polyester fiber 0.5 part, latex powder 0.2 part, water 28 servings.

[0037] The performance test results of the concrete sound-absorbing material prepared in this embodiment are shown in Table 3.

[0038] table 3

[0039]

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Abstract

The invention discloses a concrete acoustic material and a manufacturing method of the concrete acoustic material. The concrete acoustic material comprises 100 parts of cement, 120-180 parts of ceramsite, 0-1 part of polycarboxylate water reducer, 0-1.2 parts of silane waterproofing agent, 0-0.5 parts of polyester fiber, 0-0.3 parts of emulsion powder and 10-30 parts of water. The manufacturing method of the concrete acoustic material comprises the steps of burdening, molding, grouting, compression molding and demolding and maintaining. Compared with the prior art, the concrete acoustic material has the advantages that the mechanical property is high, the compression strength is more than 8MPa, the breaking strength is more than 2MPa; the specific gravity is light and is between 900-1100kg / m<3>; the sound suction frequency band is wide, the noise reduction coefficient is 0.85, can be more than 0.92 especially in the mid-high frequency band being more than 1250Hz, and is more than 1.04 in the frequency band being 500Hz. The concrete acoustic material not only can be applied to occasions such as high-speed railways, subways or urban railway systems, also can be used for building occasions with high noise reduction requirement, is convenient to construct and is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of noise pollution control, in particular to a sound-absorbing and noise-reducing material used in road traffic and construction projects and a manufacturing method thereof. Background technique [0002] With the rapid development of urban roads and rail transit, the problem of environmental noise pollution is becoming more and more serious. In order to solve the problem of noise pollution, effective control methods and measures such as setting up sound barriers and using sound-absorbing materials as road materials or building materials have been adopted at home and abroad to reduce noise pollution. . Existing sound-absorbing materials have many deficiencies in the sound-absorbing and noise-reducing effect and material performance, and cannot meet the use requirements of occasions with high requirements for noise reduction and material performance. Chinese patent ZL01808532.6 discloses a sound-absorbing mat...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 唐晨晏翁鸣朱世芊刘平伟
Owner LIUZHOU HANXIMING BUILDING MATERIAL DEV
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