[1]王建辉,李沛沛.聚合物粉煤灰陶粒多孔降噪声屏障材料制备及影响因素分析[J].长安大学学报(自然科学版),2020,40(5):27-37.
　WANG Jian hui,LI Pei pei.Preparation and analysis of influencing factors of polymerfly ashaggregate porous noise reduction barrier material[J].Journal of Chang’an University (Natural Science Edition),2020,40(5):27-37.
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聚合物粉煤灰陶粒多孔降噪声屏障材料制备及影响因素分析()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第40卷
期数:
2020年5期
页码:
27-37
栏目:
道路工程
出版日期:
2020-09-15

文章信息/Info

Title:
Preparation and analysis of influencing factors of polymerfly ashaggregate porous noise reduction barrier material
作者:
王建辉; 李沛沛
山西省交通环境保护中心站（有限公司），山西 太原 030032
Author(s):
WANG Jianhui;  LI Peipei
Shanxi Exvironmental Protection Institute of Transport （Co., Ltd）， Taiyuan 030032， Shanxi， China
关键词:
道路工程; 聚合物粉煤灰陶粒吸声降噪材料; 声学理论推算; 公路声屏障; 影响因素
Keywords:
road engineering;  polymerfly ash aggregate porous noise reduction barrier material; theoretical calculation of acoustics;  highway sound barrier;  influencing factor
文献标志码:
A
摘要:
为了研究具有多孔结构的粉煤灰陶粒（FAC）在公路交通噪声治理声屏障工程领域应用的可行性及其吸声降噪性能，以粉煤灰陶粒为轻骨料、环氧树脂作为黏合剂，混合制备聚合物粉煤灰陶粒多孔降噪材料，采用声学级配理论推导出适合公路交通噪声集中频率范围内的最佳粉煤灰陶粒粒径范围，并采用阻抗管测试系统进行试件试验验证。采用单因素试验方法研究环氧树脂与粉煤灰陶粒的最佳配合比（水灰比），并考察了试件厚度、复合级配、表面切割、掺加材料、背后空腔、模拟雨淋和冻融循环等因素对聚合物粉煤灰陶粒声屏障材料的力学性能和吸隔声性能的影响规律。研究结果表明：试验验证与理论推导的最佳陶粒粒径一致，均为1.0~3.0 mm，环氧树脂与粉煤灰陶粒的配合比（水灰比）为1∶5时材料吸声系数、力学性能最优；试件厚度的增大可明显改善材料中低频（1 000 Hz以下）的吸声性能，在1 000~1 600 Hz范围内，随着厚度增大，吸声系数呈现降低趋势；复合级配较单一级配第1共振吸声峰值向低频方向移动，500~1 000 Hz时吸声系数有明显降低趋势，400 Hz以内吸声系数有所增大；掺加橡胶粉可改善中高频吸声系数，对隔声性能的影响较小；空腔增大可明显提高材料中低频的吸声系数，但影响有限；表面切割可提升试件高频吸声系数，其影响规律与减小材料厚度相似；模拟雨淋以及冻融循环对材料吸声性能和力学性能影响均不明显。
Abstract:
In order to study the feasibility and sound absorption performance of the fly ash aggregate with a porous structure in the field of highway traffic noise control, fly ash aggregate as sound barrier lightweight and epoxy resin as adhesive were adopted to prepare. The polymerfly ash aggregate porous noise reduction barrier material. The optimum particle size range of ash ceramics the suitable frequency range of road traffic noise was derived by using the acoustic gradation theory. The impedance tube test system was used to verify the specimen. The optimum ratio of epoxy resin to pulverize coal ash ceramsite was studied by single factor experiment, inspected the specimen thickness, composite grading, behind the surface cutting, adding material, cavity, simulated rain sound barriers, and freezethaw cycles on the influence of the materials mechanical properties and sound absorption performance. The results show that the optimal theoretical size of ceramsite and the experimental results is consistent, and the acoustic and mechanical properties is optimal when the mixing ratio is 1∶5. By increasing the thickness of the specimen, the sound absorption performance of the material at medium and low frequency (below 1 000 Hz) can be improved obviously. In the range of 1 000~1 600 Hz, the sound absorption coefficient decreases as the thickness increases. Compared with the single gradation, the peak value of the first resonance sound absorption coefficient of the composite gradation moves towards the lowfrequency direction. The sound absorption coefficient of 500~1 000 Hz has a significant trend of decrease. Adding rubber powder can improve the sound absorption performance of medium and high frequency, but has little effect on the sound insulation. The absorption coefficient of medium and low frequency of the material can be obviously improved by increasing the cavity, but the effect is limited. Surface cutting can improve the high frequency sound absorption coefficient of specimen, the influence law is similar to that of material thickness reduction. The effects of simulated rain and freezethaw cycles on sound absorption and mechanical properties are not obvious. 7 tabs, 18 figs, 31 refs.

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更新日期/Last Update: 2020-10-12