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Cement-based fly ash floating bead sound absorption material and preparation method thereof

A technology of fly ash floating beads and fly ash, which is applied in the field of sound-absorbing materials, can solve problems such as poor noise reduction effects, and achieve the effects of improving sound absorption performance, good acoustic performance, and saving resources

Pending Publication Date: 2022-04-19
CHINA CONSTR SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the prior art, the purpose of this application is to provide an egg cement-based fly ash floating bead sound-absorbing material and its preparation method, aiming to solve the problem of poor noise reduction effect in the prior art

Method used

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  • Cement-based fly ash floating bead sound absorption material and preparation method thereof
  • Cement-based fly ash floating bead sound absorption material and preparation method thereof
  • Cement-based fly ash floating bead sound absorption material and preparation method thereof

Examples

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preparation example Construction

[0033] The second aspect of the embodiment of the present application provides a method for preparing a cement-based fly ash floating bead sound-absorbing material, including the following steps:

[0034]Step S10: According to the above-mentioned embodiment of the present application, the components contained in the cement-based fly ash floating bead sound-absorbing material are provided and the raw material components are weighed;

[0035] Step S20: mixing each raw material component and a solvent to obtain a cement-based fly ash floating bead sound-absorbing slurry;

[0036] Step S30: solidifying the cement-based fly ash floating beads sound-absorbing slurry to obtain a cement-based fly ash floating beads sound-absorbing material.

[0037] The material prepared by the preparation method provided in the examples of this application has low bulk density and good acoustic performance. Specifically, according to the above examples of the application, the components contained in ...

Embodiment 1

[0052] This embodiment provides a cement-based fly ash floating beads sound-absorbing material, including a mixture of fly ash floating beads, cement, solvent and water reducing agent, and the mass ratio of fly ash floating beads: cement: water reducing agent It is 110:100:0.6.

[0053] This example provides a method for preparing a cement-based fly ash floating bead sound-absorbing material. Among them, the specific steps are as follows:

[0054] Step 10: Weigh each raw material component according to the mass ratio of fly ash bleaching beads: cement: solvent: water reducing agent is 90:100:35:0.6;

[0055] Step 20: mixing each raw material component to obtain cement-based fly ash floating bead sound-absorbing slurry;

[0056] Step 30: Solidifying the cement-based fly ash floating beads sound-absorbing slurry to obtain a cement-based fly ash floating beads sound-absorbing material.

Embodiment 2

[0058] This embodiment provides a cement-based fly ash floating bead sound-absorbing material, including a mixture of fly ash floating beads, cement, solvent and water reducing agent, and fly ash floating beads: cement: solvent: water reducing agent The mass ratio is 90:100:0.6. Wherein, the fly ash floating beads are silicon oxide and aluminum oxide, and the mass ratio of silicon oxide to the aluminum oxide is 55:30 to 60:35, the diameter of the fly ash floating beads is 20 mesh, and the fly ash floating beads The ratio of wall thickness to diameter length is 1:20~2:25. The cement is 52.5R high-strength white cement. Please refer to Table 1 for the properties of the white cement. The solvent is water, and the water reducer is polycarboxylate water reducer.

[0059] Table 1 is the performance table of cement

[0060]

[0061] This example provides a method for preparing a cement-based fly ash floating bead sound-absorbing material. Specific steps are as follows:

[006...

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Abstract

The invention belongs to the technical field of sound absorption materials, and relates to a cement-based fly ash floating bead sound absorption material and a preparation method thereof. The cement-based fly ash floating bead sound absorption material is provided on the first aspect and comprises a mixture of fly ash floating beads, cement and a water reducing agent, and the mass ratio of the fly ash floating beads to the cement to the water reducing agent is (70-110): 100: 0.6. The sound absorption coefficient of the cement-based fly ash floating bead sound absorption material provided by the invention is higher than that of a common porous sound absorption material especially at a low-frequency band, the cement-based fly ash floating bead sound absorption material can be expected to be used for various sound absorption structures and indoor and outdoor spaces needing acoustic design, and accumulation of byproducts and pollution to the environment can be effectively reduced; the method conforms to the national development strategy of energy conservation and emission reduction, the production amount of traditional cement-based sound absorption material aggregates such as rubber particles can be reduced, and resources are saved.

Description

technical field [0001] The present application belongs to the technical field of sound-absorbing materials, and more specifically, relates to a cement-based fly ash floating bead sound-absorbing material and a preparation method. Background technique [0002] In recent years, my country's road traffic construction has become more and more mature, but the problem of traffic noise has increasingly become a major problem that plagues residents along the road. [0003] In the thermal insulation and sound insulation dry powder mortar currently disclosed, the composition and mass ratio of the dry powder mortar is as follows: cement: 30-40%; vitrified microbeads: 30-35%; elastic rubber powder: 9-14%; latex powder: 0.5-2%; clay: 5-7%; ash calcium: 4-5%; polypropylene fiber: 0.5-2%; cellulose ether: 0.4-3%; water reducer: 1-2%. As a result, the strength of the mortar is seriously reduced, and it is easy to disperse unevenly during use, resulting in uneven mechanical properties, resu...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B28/04C04B18/08
CPCC04B38/0038C04B28/04C04B18/082C04B2201/50C04B2103/302C04B22/002Y02W30/91
Inventor 王波谢辉齐贺王玺李冠达戈禧芸王欣博邢晨
Owner CHINA CONSTR SCI & TECH CO LTD
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