材料科学
聚脲
聚氨酯
复合材料
蠕动
极限抗拉强度
声屏障
结构工程
模数
抗弯强度
压缩(物理)
杨氏模量
工程类
计算机科学
降噪
人工智能
作者
B. Daee,M. Hesham El Naggar
出处
期刊:Journal of Materials in Civil Engineering
[American Society of Civil Engineers]
日期:2016-07-01
卷期号:28 (7)
被引量:4
标识
DOI:10.1061/(asce)mt.1943-5533.0001522
摘要
This paper presents a comprehensive experimental study on mechanical characteristics of rigid polyurethane foam (RPF) and its application as the structural core of an innovative noise barrier consisting of polyblock, RPF, and polyurea. The mechanical behavior of RPF was characterized by performing tensile, compression, modulus of elasticity, Poisson’s ratio, flexural, shear, pullout, cyclic, and long-term creep tests. Five full-scale walls were also fabricated and their behavior was established under lateral static and cyclic loading. Applicability of the proposed wall system (polywall) in accelerated construction was practically examined. Experimental results were discussed and a preliminary design of polywall was also conducted. Results revealed that mechanical performance of RPF as well as the entire wall system is satisfactory for the investigated application and polywall can be employed in accelerated construction of noise barriers.
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