This paper presents the engineering characteristics of reclaimed asphalt pavement, blended with virgin aggregate for unbound base/subbase layers. The proportions of RAP were 0%, 20%, 60%, 80% and 100% by total mass of the blend. The experimental laboratory testing included index properties such as gradation, modified Proctor compaction, California Bearing Ratio, and hydraulic conductivity. Repeated load resilient modulus testing was conducted on the blends. The impact of load duration on resilient modulus was also investigated. A strong inverse trend was found between resilient modulus and California Bearing Ratio. An accurate model was proposed for the prediction of the resilient modulus as a function of stress state and reclaimed asphalt pavement percentage with coefficient of determination of 0.94.Finally, multilayer elastic analysis of typical pavement sections with the base layer constructed of virgin aggregate-reclaimed asphalt pavement blends showed good performance.

No abstract

Periodontal disease is a chronic infectious disease of the tissues surrounding the teeth that result in tooth loss. It affects up to 50% of the adult population worldwide.

No abstract