Ultrasonic characterization of expanded polystyrene used for shallow
tunnels under seismic excitation

Faculty	Engineering	Year:	2022
Type of Publication:	ZU Hosted	Pages:
Authors:	Mohamed Salah Amin Abdelaal Staff Zu Site Abstract In Staff Site
Journal:	Ain Shams Engineering Journal journal homepage: www.sciencedirect.com	Volume:

Keywords :	Ultrasonic characterization , expanded polystyrene used , shallow tunnels
Abstract:	Expanded Polystyrene (EPS) is used as an inclusion to mitigate stresses acting on tunnels. In this study, the efficiency of utilizing EPS in reducing dynamic loads acting on shallow tunnels was studied. To gauge this, dynamic modulus of elasticity (Ed) and shear modulus (G) of EPS with densities equal to 25, 30, and 35 kg/m3 were characterized based on series of ultrasonic tests,

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