INFLUENCE OF RUBBER ADDITIVES IN GUSSASPHALT SURFACINGS

EINFLUSS VON KAUTSCHUKZUSAETZEN BEI GUSSASPHALTDECKSCHICHTEN

RESULTS OBTAINED FROM EXPERIMENTAL ROADS AND PARTICULARLY FROM LABORATORY TESTS LEAD ONE TO EXPECT THAT ADMIXTURES OF RUBBER TO GUSSASPHALT,APART FROM INCREASING RESISTANCE TO CRACKING AND DEFORMATION,ALSO BRING ABOUT A REDUCTION IN ABRASION BY IMPROVING THE COMPONENTS OF THE MORTAR.THE AIM OF THE RESEARCH PROJECT THEREFORE IS TO CHECK WHETHER RUBBER HAS A POSITIVE INFLUENCE ON THE ABOVE-MENTIONED CRITERIA WITHOUT OTHER PROPERTIES OF THE GUSSASPHALT BEING IMPAIRED.EXTENSIVE PRELIMINARY STUDIES OF BITUMEN -RUBBER MIXTURES TO DETERMINE SUITABLE RUBBER PRODUCTS AND MIXING CONDITIONS,AND OF GUSSASPHALT SAMPLES STRESSED TO DETERMINE BENDING TENSILE STRENGTH,PENETRATION DEPTH AND FATIGUE TENSILE STRENGTH,WILL BE CARRIED OUT IN THE LABORATORY.AFTER THE SYSTEMATICALLY CONDUCTED LABORATORY TESTS HAVE BEEN EVALUATED,EXPERIMENTAL SECTIONS OF ROAD HAVING A RUBBER PRODUCT AS AN ADMIXTURE TO THE GUSSASPHALT ARE TO BE CONSTRUCTED,SO THAT INFORMATION CAN BE OBTAINED ON MANUFACTURE,LAYING PROPERTIES,RESISTANCE OF THE GUSSASPHALT TO REFLECTION CRACKKS ON CONCRETE BASES,DEFORMATION,WEAR AND SKIDDING RESISTANCE.