MATERIALS, RESEARCH AND STANDARDS, IMPLEMENTING RESEARCH FINDINGS: SAWING JOINTS TO CONTROL CRACKING IN FLEXIBLE PAVEMENTS
Transverse joints were sawed in a deep-strength (12 inch) flexible pavement, which is over a granular subgrade, prior to the opening of the roadway to traffic. This research project was located on the two southbound lanes of Interstate 35 near Stacy. Each of the three test sections is approximately 500 feet long. Joints were sawed at 40, 60, and 100-foot intervvals for a total of 30 joints. Two 700-foot control sections, where no joints were sawed, were left between the sawed sections for comparison purposes. After 4-1/2 years or 5 winters of service almost complete crack arresting was accomplished in the test sections where joints were sawed at 40 and 60-foot intervals. A few cracks had formed in the test section where joints were sawed at 100-foot intervals. In contrast numerous cracks had developed in the control sections.
Minnesota Department of HighwaysOffice of Research Coordination
St Paul, MN USA 55101
- Morchinek, R M
- Publication Date: 1974
- Pagination: 36 p.
- TRT Terms: Control; Cracking; Cutting; Expansion joints; Flexible pavements; Joint sealers; Pavement cracking; Sawing; Sealing compounds; Test sections; Transverse joints
- Uncontrolled Terms: Crack propagation
- Geographic Terms: Minnesota
- Old TRIS Terms: Control joints
- Subject Areas: Highways; Materials; Pavements;
- Accession Number: 00091549
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: MN-HW-5-180-74-7 Pro. Rpt.
- Files: NTIS, TRIS, STATEDOT
- Created Date: Aug 13 1975 12:00AM