A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Reflection Cracking in Bituminous Overlays on Rigid Pavements
For the past 20 years, New York has investigated methods to retard reflection cracking in bituminous overlays on rigid pavements. Those actually tried had all been previously reported successful by other agencies. Unfortunately, only a few were successful here and the results provided two reasons for this discrepancy, both of which were resolved during the work. One is that crack initiation is due solely to horizontal movement, and the other that slab length and temperature change, generally not reported elsewhere, are important considerations in reflection cracking. Once these were considered in analyses, lack of consistency or complete ineffectiveness demonstrated by several methods became explainable. Methods investigated included (1) reinforcing the overlay, (2) spreading bond-breakers on the concrete or breaking and seating the concrete before overlaying, (3) sawing and sealing the overlay above the transverse joint, and (4) constructing thicker overlays.
Reflection Cracking in Bituminous Overlays on Rigid Pavements
For the past 20 years, New York has investigated methods to retard reflection cracking in bituminous overlays on rigid pavements. Those actually tried had all been previously reported successful by other agencies. Unfortunately, only a few were successful here and the results provided two reasons for this discrepancy, both of which were resolved during the work. One is that crack initiation is due solely to horizontal movement, and the other that slab length and temperature change, generally not reported elsewhere, are important considerations in reflection cracking. Once these were considered in analyses, lack of consistency or complete ineffectiveness demonstrated by several methods became explainable. Methods investigated included (1) reinforcing the overlay, (2) spreading bond-breakers on the concrete or breaking and seating the concrete before overlaying, (3) sawing and sealing the overlay above the transverse joint, and (4) constructing thicker overlays.
Reflection Cracking in Bituminous Overlays on Rigid Pavements
J. M. Vyce (author)
1983
33 pages
Report
No indication
English
Reflection Cracking in Bituminous Overlays
| NTIS | 1976
Crack control joints in bituminous overlays on rigid pavements
| Engineering Index Backfile | 1962