Laboratory Evaluation of Dynamic Characteristics of a New High-Modulus Asphalt Mixture

With the rapid increase in traffic volume and heavy-duty vehicles, rutting has become one of most serious problems threatening service quality life asphalt pavement. High-modulus concrete is a promising method to overcome this problem, contributing sustainable development In study, new composite high-modulus agent (CHMA)-modified binder mixture were prepared, their dynamic mechanical characteristics investigated by shear rheometer, modulus test, wheel tracking frequency sweep test at constant height (FSCH), repeated (RSCH) comprehensively evaluate its high-temperature stability. Test results showed that rheological property CHMA-modified was similar low-graded binder, implying it had strong potential resisting deformation. The AC-20(CHMA) 19,568 MPa 15 °C 10 Hz condition, meeting requirement for (higher than 14,000 MPa). stability 8094 times/mm, lower AC-20(20#), but remarkably higher AC-20(SBS). AC-20(20#) both resistance according FSCH results. Under loadings, growth rate strain increased rapidly primary stage, then slowed down gradually, finally reaching rate. slope between AC-20(SBS), demonstrating loadings superior although slightly weaker AC-20(20#). findings study provide references alleviating improving lifespan