A study of the dynamic mechanical properties of CRTS I type CA mortar. (1st June 2016)

• Record Type: Journal Article
• Authors: Zeng, X.H.; Xie, Y.J.; Deng, D.H.; Wang, P.; Qu, F.L.
• Is Part Of: Construction & building materials. Volume 112(2016)
• Page Start: 93
• Page End: 99
• Publication Date: 2016-06-01
• Subjects: CA mortar -- Dynamic mechanics -- Vibration -- Strain rate; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2015.08.024
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Strain rate effects on the mechanical properties of CA mortar were analyzed. Comparative study between CA mortar and other materials were also carried out. The mechanical properties of CA mortar are very sensitive to the strain rate. CA mortar shows excellent vibration attenuation and separation abilities. Abstract: Cement and emulsified asphalt mortar (CA mortar) consists of cement, emulsified asphalt, sand, water, and other additives, which can be used as a vibration attenuator and isolation casting layer in modern high-speed railway. However, the dynamic mechanical properties of CA mortar have not been well documented until now. In this paper, a series of experiments were carried out to characterize the dynamic properties of CA mortar. It can be found from the test results that the compressive strength, the compressive strain, and the elastic modulus are much more sensitive than traditional Portland cement mortar and concrete in a specified range of strain rate. Meanwhile, experimental results from an impacting acceleration test presents that CA mortar had excellent vibration attenuation and isolation functions.