EFFECTIVENESS OF HIGH-PERFORMANCE THIN SURFACINGS IN A WET-FREEZE ENVIRONMENT

摘要: After a period of vigorous growth in the 1960s and 1970s, Canadian highway pavement infrastructure is maturing, consolidating, and, through repeated use overlays, achieving ample structural adequacy. Quite often, rehabilitation does not require an increase strength or thickness, but mainly restoration rejuvenation riding surface. This may include need for increased skid resistance sealing raveled surface texture incipient cracks. Conventional thin asphaltic concrete overlays (35 to 40 mm less) are expensive, often their performance environment questionable. Chip seals, addition limitations, associated with windshield breakage noise. The acquire innovative technology deal effectively has prompted Ontario experiment high-performance polymer-modified slurry systems, referred generically as microsurfacing. design, testing procedures, material characteristics, construction, environmental consequences, three microsurfacing treatments placed on two-lane 1990 by contractors suppliers described. Preliminary results indicate that provides viable cost-effective surficial alternative structurally sound pavements. Critical components ensure success project comprehensive mix design process, quality materials, knowledgeable experienced contractor.