Acoustic performance optimization of a cementitious composite with a porous medium
Acoustic performance optimization of a cementitious composite with a porous medium
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多孔介质水泥基复合材料的声学性能优化
DOI：
10.1016/j.jobe.2021.103362
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发表时间：
2021-12
影响因子：
6.4
通讯作者：
Wang Xiangyu
中科院分区：
文献类型：
--
作者：
Lin Sen;Zhang Genbao;Sun Junbo;He Shilin;Chen Changfu;Morsy Amr M.;Wang Xiangyu
本文提出了一种带隙最大化的优化算法，旨在设计水泥基复合材料的孔隙率。数值分析揭示了复合材料孔隙率与带状结构之间的关系。以碎石为主要骨料，掺加微珠和发泡剂制备多孔水泥基复合材料，并对其配合比进行了相关试验。应用数字显微镜图像来评估复合材料的微观结构细节。利用声阻抗管测试了多孔混凝土的声学性能。结果表明，由4 mm粒径的碎石和周围的微珠组成的声子晶体的最大吸声系数可达90%。峰值对应的频率为1490 Hz，从理论推导和仿真分析来看，与带隙的频率范围一致。该方法有望应用于水泥基结构的设计，以实现吸声性能的提高。
This paper presents an optimization algorithm for band-gap maximization aimed at designing the porosity of a cementitious composite. Numerical analysis revealed the relationship between the composite porosity and band structure. With the utilization of gravels as the main aggregate, microbeads and a vesicant were also mixed to produce the porous cementitious composite, where correlative experiments were conducted on the mixture proportion. Digital microscope images were applied to evaluate the micro-construction details of the composite. The acoustic performance of the porous concrete was tested by an impedance tube. The results show that the maximum sound absorption coefficient of the phononic crystal composed of 4 mm gravels and surrounding microbeads can reach 90%. The frequency corresponding to the peak value is 1490 Hz, which is consistent with the frequency range of the band gap from theoretical derivation and simulation analysis. This developed methodology is expected to be applied to the design of cementitious structures to achieve sound absorption performance enhancement.
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影响因子：
4.1
作者：
Huang, X.;Xie, Y. M.
通讯作者：
Xie, Y. M.
影响因子：
3.4
作者：
Siwat Lawanwadeekul;T. Otsuru;R. Tomiku;H. Nishiguchi;N. Sakamoto;Daiki Matsuoka;Ryota Yoshimoto
通讯作者：
Siwat Lawanwadeekul;T. Otsuru;R. Tomiku;H. Nishiguchi;N. Sakamoto;Daiki Matsuoka;Ryota Yoshimoto
影响因子：
3.9
作者：
D. Da;L. Xia;Guangyao Li;Xiaodong Huang
通讯作者：
D. Da;L. Xia;Guangyao Li;Xiaodong Huang
影响因子：
3.2
作者：
Tsung-Tsong Wu;Liangliang Wu;Zi-Gui Huang
通讯作者：
Tsung-Tsong Wu;Liangliang Wu;Zi-Gui Huang
影响因子：
8.6
作者：
Yang, SX;Page, JH;Sheng, P
通讯作者：
Sheng, P