Waste bleaching clays as fillers in hot bituminous mixtures

摘要: Abstract Today, it is a well known fact that mineral fillers have key role in controlling the mechanical characteristics of hot mix asphalts. The cohesion properties bituminous mastics depend upon used, and, therefore, so do effective strength asphalt concrete and durability pavement layer. In this study, waste bleaching clays from food industry are proposed as an alternative to common limestone filler for production Hot Mix Asphalts (HMA). used here come two consecutive stages industrial process decolouring vegetable oils producing biogas clay, where former richer residual organic fats (20–25% weight against less than 1%). aim research was assess performance binder course mixture, terms physical characteristics, when alternative. For purpose, data obtained control produced with traditional were compared those recorded samples containing clay either first or second stage above, place filler. Results show significant difference between effects by on concrete, shows more positive both indirect tensile stiffness mixture’s resistance permanent deformations.