In the summer of 1989, the Ministry of Transportation of Ontario (MTO) undertook the rehabilitation of an exposed concrete pavement exhibiting various distress manifestations. Highway 126 in Southwestern Ontario is a four-lane divided arterial with 22,000 AADT and 9.6% commercial traffic in year 2000. The rehabilitation techniques of the highway in the northbound lanes (NBL) included full depth repair, partial depth repair, diamond grinding and joint sealant replacement. The southbound lanes (SBL) received a 180 mm thick plain jointed unbonded PCC overlay to address the severe 'D' cracking and spalling at all the joints and cracks. This paper will discuss the fifteen-year evaluation of this rehabilitated pavement in terms of roughness measurements using the Automatic Roughness Analyzer (ARAN), frictional resistance measured with the ASTM brake-force trailer, and Pavement Condition Ratings. Also included will be a discussion on subsequent localized concrete pavement repair work completed on the highway during the fifteen years. For the covering abstract of this conference see ITRD number E211426.
Samenvatting