A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Crack and Seat Method of Pavement Rehabilitation
The paper describes a research project which evaluated the effectiveness of the crack and seat method of pavement rehabilitation. The process involved cracking a portland cement concrete pavement into 1 1/2 - 2-foot size pieces and firmly seating the pieces into the subgrade prior to overlaying with asphalt concrete. Cracking the pavement serves to reduce the concrete slab's horizontal movement due to thermal expansion and contraction. Seating the cracked pieces minimizes vertical movement in the slab by restoring subgrade support. Minimizing movement in the underlying concrete pavement should theoretically reduce the stresses in the asphalt concrete overlay that result in reflective cracking. While not guaranteed to eliminate reflective cracking, cracking and seating is designed to reduce or retard reflective cracking. The crack and seat process does seem to have been beneficial in reducing the amount of reflective cracking on the thickened edge pavements. Based on the findings, the crack and seat method of rehabilitation is not recommended for use on reinforced pavements. A sample specification incorporating the study's findings is included in the report.
Crack and Seat Method of Pavement Rehabilitation
The paper describes a research project which evaluated the effectiveness of the crack and seat method of pavement rehabilitation. The process involved cracking a portland cement concrete pavement into 1 1/2 - 2-foot size pieces and firmly seating the pieces into the subgrade prior to overlaying with asphalt concrete. Cracking the pavement serves to reduce the concrete slab's horizontal movement due to thermal expansion and contraction. Seating the cracked pieces minimizes vertical movement in the slab by restoring subgrade support. Minimizing movement in the underlying concrete pavement should theoretically reduce the stresses in the asphalt concrete overlay that result in reflective cracking. While not guaranteed to eliminate reflective cracking, cracking and seating is designed to reduce or retard reflective cracking. The crack and seat process does seem to have been beneficial in reducing the amount of reflective cracking on the thickened edge pavements. Based on the findings, the crack and seat method of rehabilitation is not recommended for use on reinforced pavements. A sample specification incorporating the study's findings is included in the report.
Crack and Seat Method of Pavement Rehabilitation
A. M. Schutzbach (author)
1988
55 pages
Report
No indication
English
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