LITERATURE STUDY ON BITUMEN-PLASTIC COMBINATIONS IN ROADS

LITERATURSTUDIE UEBER BITUMEN-KUNSTSTOFF-KOMBINATIONEN IM STRASSENBAU

COLD FLEXIBILITY, HEAT STABILITY, ABRASION STRENGTH AND AFFINITY TO STONE ARE THE REQUIREMENTS OF BITUMEN DEMANDED BY THE ROAD ENGINEER. THESE PROPERTIES MAY BE FAVOURABLY INFLUENCED BY COMBINING BITUMEN WITH SUITABLE PLASTICS. INTENSIVE PRACTICAL TRIALS ARE BEING CARRIED OUT ON THE USE OF AVAILABLE PLASTIC MATERIALS, BUT THERE IS A LACK OF COMPARATIVE STUDIES TO DETERMINE WHICH COMBINATIONS ARE BEST TECHNICALLY AND ECONOMICALLY. A PRELIMINARY STUDY IS TO COMPRISE THE FOLLOWING STAGES: 1 - EVALUATION OF LITERATURE AT HOME AND ABROAD ON COMBINATIONS OF BITUMEN AND PLASTIC AND THEIR USE IN FLEXIBLE ROAD CONSTRUCTION; 2 - TESTING OF PROBABLE METHODS OF STUDY, TAKING AS AN EXAMPLE A BITUMEN-PLASTIC COMBINATION ALREADY USED IN PRACTICE; 3 - PRODUCTION OF A REPORT CONTAINING A DETAILED PLAN OF WORK AS A BASIS FOR LETTING THE FINAL RESEARCH CONTRACT.