Abstract
AbstractA novel approach is introduced for investigating the relationships between the electrical resistivity characteristics, Er, and the volumetric properties of asphalt mixtures, i.e., bulk specific gravity, Gmb, air voids in mixture, Vbm, and voids in mineral aggregates, Vma. It is well known the volumetric properties of asphalt mixtures are controlled by several variables, i.e., aggregate gradation, aggregate type, filler type, bitumen type, and bitumen content. In this study, the effects of both variables of aggregate gradation and bitumen content are investigated on the electrical resistivity of asphalt mixtures and some correlations are developed between the electrical resistivity and the volumetric properties of laboratory compacted asphalt mixture specimens. For this purpose, 455 Marshall specimens containing calcareous type crushed stone aggregate with 60/70 penetration asphalt binder were fabricated and tested at five different aggregate gradations and seven varied bitumen contents with 13 rep...
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