The environmental impacts of producing asphalt mixtures with different percentages of asphalt binder replacement (ABR) are assessed using the technique of life cycle assessment (LCA). In this paper, only the material production phase of the pavement life cycle is considered. To improve the quality of the LCA, a regionalized life cycle inventory (LCI) database for the Northern Illinois region is...

This report evaluates the effectiveness of rubber-asphalt and ebonite-asphalt mixes based on a review of published literature and unpublished reports. It discusses in detail various aspects of these mixes, including: diffe ent applications, physical properties, experiences of state highway agencies, and claimed advantages and problems associated with their use. The addition of ground tire rubbe...

As two kinds of solid wastes, waste tires and steel slag have caused serious threats to the environment. Both tire rubber (WTR) powder (SSP) can improve performance asphalt, while indexes modification mechanism modified asphalt are not clear. In this paper, with SSP WTR was prepared, its evaluated. The physical properties WTR, including penetration, softening point, viscosity, were investigated...

For the concerns of investigating viscoelastic properties recycled asphalt mixtures incorporating high content reclaimed styrene-butadiene-styrene (SBS) modified pavement (RAP-SBS), mixture performance tester (AMPT) was applied to analyze dynamic modulus and phase angle by influence RAP-SBS content, temperature, loading frequency, long-term aging (LOTA), incorporation a rejuvenating agent. Mast...

This study presents a finite element (FE) micromechanical modelling approach for the simulation of linear and damage-coupled viscoelastic behaviour of asphalt mixture. Asphalt mixture is a composite material of graded aggregates bound with mastic (asphalt and fine aggregates). The microstructural model of asphalt mixture incorporates an equivalent lattice network structure whereby intergranular...

Reclaimed asphalt pavement (RAP) contributes substantially to the volume of recycled waste in world. This research aims evaluate mechanistic performance concrete with 100% RAP (RAP-AC) modified natural hemp fiber (HF) reinforcement. The effects HF lengths and contents on were investigated. static tests included Marshall stability, strength index (SI), indirect tensile (ITS), whilst cyclic resil...

This study investigated the effect of high asphalt binder replacement for a low N-design asphalt mixture including RAP and RAS on performance indicators such as permanent deformation, fracture, fatigue potentials, and stiffness, was studied. An experimental program included complex modulus, fracture, overlay reflective cracking resistance, wheel track permanent deformations, and push-pull fatig...