IMPROVED ASPHALT SURFACES AND ASPHALT RESURFACING PERFORMANCE THROUGH CRACK MAINTENANCE
In 1980, a Vanguard High Pressure Water Blaster capable of providing 10 gallons of water per minute at 2000 psi was purchased to evaluate water blasting as a crack cleaning method prior to crack filling on asphalt concrete pavements. Afer some iniital trials demonstrated its effectiveness of removing dirt, debris and vegetation, it was included in joint and crack maintenance research on Iowa 7 in Webster County. The objective of the research was to evaluate six crack preparation methods and seven "sealant" materials. The cleaning and sealing was performed in the spring of 1983. Visual evaluations of the performance were made in the fall of 1983 and spring of 1985. Compressed air and/or high pressure water did not adequately prepare cracks less than 3/8 inch wide. Routing or sawing was necessary to provide a sealant reservoir. The water blaster was more effective than compressed air in removing dirt, debris and vegetation but this did not yield significant improvement in sealant adhesion or longevity. Periodic crack filling is necessary on ACC surfaces throughout the remaining life of the pavement.
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Corporate Authors:
Iowa Department of Transportation
800 Lincoln Way
Ames, IA United States 50010 -
Authors:
- Dunshee, B D
- Samuelson, R R
- Rorholm, D
- Publication Date: 1987-4
Media Info
- Features: Appendices; Figures; Tables;
- Pagination: v.p.
Subject/Index Terms
- TRT Terms: Alternatives analysis; Asphalt pavements; Cleaning; Compressed air; Measures of effectiveness; Pavement cracking; Resurfacing; Sealing (Technology); Waterjets
- Uncontrolled Terms: Effectiveness
- Old TRIS Terms: Cleaning procedures; Resurfaced pavements; Sealing
- Subject Areas: Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods;
Filing Info
- Accession Number: 00472929
- Record Type: Publication
- Files: TRIS, STATEDOT
- Created Date: Sep 30 1987 12:00AM