Abstract: Nondestructive ultrasound-based methods have been applied to evaluate the elastic properties of concrete materials. Although the wave modulus of elasticity of concrete frequently is reported to be higher than the static ...

Abstract: Thermal-photo-oxidative coupled aging, anaerobic and thermal-oxidative aging testing were conducted on styrene-butadiene-styrene (SBS) type copolymer -modified asphalt at different aging temperatures. The changes in ...