SOME PHYSICO-CHEMICAL ASPECTS OF THE EFFECT AND THE ROLE OF THE FILLER IN BITUMINOUS PAVING MIXTURES

Abstract

The paper reports on research undertaken to investigate some physico-chemical aspects that would explain the specific interfacial interaction of bitumen-filler systems and give more light on the role of the filler in bituminous paving mixtures. This paper describes an experimental and analytical study of three significant physico-chemical aspects: geometric characteristics, adsorption intensity, and selective sorption. Six types of filler were studied. For practical correlations, rheological tests were carried out on filler-bitumen mastics, and strength tests on sand-asphalt bituminous mixtures.