Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Partial Depth Repair of Concrete Pavements in Wisconsin
Partial depth repair (PDR) is a concrete pavement rehabilitation method used to address surface spalling and top‐down deterioration at joints and cracks. During the repair, deteriorated concrete is removed and replaced in the top half of the slab. In 2000, WisDOT initiated a research study to evaluate the PDR rehabilitation method. Three PDR test sections were constructed, along with three control sections using alternative rehabilitation methods: bonded concrete overlay, HMA overlay, and full depth concrete repair. Performance of the test and control sections was monitored between 2000 and 2012. Additional PDR rehabilitation projects constructed between 2003 and 2008 were also evaluated. Low‐ to moderate‐severity spalling was observed after 2 to 4 years in service, and patching of the PDR was necessary after 4 to 6 years in service. After 10 to 12 years in service, the test areas were in need of major repair or rehabilitation. The PDR failures were likely a result of deficient construction materials and/or improper construction techniques. The full depth concrete repairs had failures similar to those in the PDR test sections. The best performance was noted in the bonded concrete overlay. Adequate performance was observed in the HMA overlay, although extensive reflective cracking was present after 9 years in service. Based on these observations, future application of the PDR rehabilitation method by WisDOT regions and engineers should be coupled with possible material and specification revisions; as well as adequate construction oversight.
Partial Depth Repair of Concrete Pavements in Wisconsin
Partial depth repair (PDR) is a concrete pavement rehabilitation method used to address surface spalling and top‐down deterioration at joints and cracks. During the repair, deteriorated concrete is removed and replaced in the top half of the slab. In 2000, WisDOT initiated a research study to evaluate the PDR rehabilitation method. Three PDR test sections were constructed, along with three control sections using alternative rehabilitation methods: bonded concrete overlay, HMA overlay, and full depth concrete repair. Performance of the test and control sections was monitored between 2000 and 2012. Additional PDR rehabilitation projects constructed between 2003 and 2008 were also evaluated. Low‐ to moderate‐severity spalling was observed after 2 to 4 years in service, and patching of the PDR was necessary after 4 to 6 years in service. After 10 to 12 years in service, the test areas were in need of major repair or rehabilitation. The PDR failures were likely a result of deficient construction materials and/or improper construction techniques. The full depth concrete repairs had failures similar to those in the PDR test sections. The best performance was noted in the bonded concrete overlay. Adequate performance was observed in the HMA overlay, although extensive reflective cracking was present after 9 years in service. Based on these observations, future application of the PDR rehabilitation method by WisDOT regions and engineers should be coupled with possible material and specification revisions; as well as adequate construction oversight.
Partial Depth Repair of Concrete Pavements in Wisconsin
I. Battaglia (Autor:in) / D. Bischoff (Autor:in)
2012
31 pages
Report
Keine Angabe
Englisch