Zonglin Xie, Gongkun Xiang, Fuwen Zhong, Yi Tian, Haiyang Li, Jinshan Lei, Qiang Yuan,（2024）Unveiling the impact of organic phase aging on the long-term damping capacity of cement-styrene butadiene rubber composites,Construction and Building Materials,Volume 437,2024,136916.doi.org/10.1016/j.conbuildmat.2024.136916.
发布时间：2024-07-26
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摘要：Given the crucial role of cement-styrene butadiene rubber (SBR) composites in the application of damping structural materials, their long-term damping performance needs to incorporate a focused examination of organic phase aging. This study investigated the changes in the dynamic mechanical properties of these composites subjected to thermo-oxidative and ultraviolet aging, and explored the damping degradation mechanisms specific to SBR. The results demonstrated a significant reduction in the damping capability of the composites under aging, exceeding 19.5 %, 33.9 %, and 46.0 % after 1, 2, and 4 years of service, respectively. The decrease is attributed to the alteration in the molecular structure of SBR, which includes the oxidation of the α-H double bond to a hydroxyl group, followed by a dehydrogenation reaction leading to the formation of aldehyde. Furthermore, the study utilized a three-element standard solid model to elucidate the frequency-dependent dynamic mechanical properties of the cement-SBR composites.
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发表时间：2024-07-26
上一条： Xiuzhu Yang, Xilai Li, Yongguan Zhang et al. （2024）DEM-based study on mechanical behavior and strength criterion in layered slate under triaxial compression, 03 May 2024, PREPRINT (Version 1) available at Research Square.doi.org/10.1007/s12665-024-11795-9
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