FULL-SCALE ROAD EXPERIMENTS USING RUBBERIZED SURFACINGS MATERIALS

FOLLOWING LABORATORY INVESTIGATION INTO THE PROPERTIES RUBBERIZED BINDERS AT THE ROAD RESEARCH LABORATORY, FULL-SCALE ROAD EXPERIMENTS USING RUBBERIZED SURFACING MATERIALS WERE CONDUCTED DURING THE LAST SEVENTEEN YEARS. THE RESULTS OF THESE EXPERIMENTS ARE REVIEWED. THE ADDITION OF RUBBER TO MASTIC ASPHALT PREVENTS OR MARKEDLY REDUCES CRACKING WHEN A BITUMINOUS SURFACING IS LAID OVER JOINTS OR CRACKS IN A CONCRETE PAVEMENT. THE BEST RESULTS ARE OBTAINED WHEN THE HIGHEST BINDER CONTENT CONSISTENT WITH RESISTANCE TO DEFORMATION UNDER TRAFFIC IS USED. THE ADDITION OF 4 PERCENT OF NATURAL RUBBER TO THE BINDER OF ROLLED ASPHALT CONSIDERABLY REDUCES THE NUMBER AND SEVERITY OF CRACKS IN THIS SURFACING MATERIAL WHEN LAID OVER JOINTS AND CRACKS IN A CONCRETE PAVEMENT. A 50 PERCENT INCREASE IN LIFE OF BITUMEN MACADEM WAS OBTAINED IN ONE EXPERIMENT WHEN 4 PERCENT OF RUBBER WAS ADDED TO THE BINDER. A CONSIDERABLE REDUCTION IN THE TENDENCY OF BITUMEN SURFACE DRESSINGS TO 'FAT UP' IN HOT WEATHER UNDER HEAVY TRAFFIC WAS SHOWN WHEN RUBBER WAS BLENDED WITH THE BINDER. AN INCREASED INITIAL HOLDING POWER OF THE BINDERS CONTAINING RUBBER WAS OBSERVED. /AUTHOR/

• Supplemental Notes:
  • Rrl Rept Lr 370, 34 PP, 2 FIG, 4 PHOT
• Authors:
  • Thompson, P D
  • Szatlcowski, W S
• Publication Date: 1971

Media Info

• Serial:
  • Rrl Reports, Road Research Lab /UK/

Subject/Index Terms

• TRT Terms: Asphalt pavements; Binders; Bituminous materials; Concrete pavements; Cracking; Elastomer modified asphalt; Mastic asphalt; Rubber; Service life; Surface treating
• Old TRIS Terms: Bituminous surfacing; Mastics
• Subject Areas: Design; Highways; Materials;

Filing Info

• Accession Number: 00211602
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 22 1971 12:00AM