construction of asphalt overlay layers on top of old concrete pavements is considered an efficient pavement rehabilitation strategy.These asphalt overlay layers, however, are usually subject to reflection cracking and high tensile and shear stresses related to movement of the old concrete slab and the resulting composite nature of the new pavement section (flexible/rigid section). In addition, these asphalt overlay layers are usually vulnerable to rutting-type distresses, which may be occurring more frequently with the recent increases in trucks carrying extremely heavy gross weights (more than 100, 000 lb) and frequently reported high tire pressures (more than 120 psi). Concrete (rigid) pavements have the advantage of being rut-resistant compared to asphalt (flexible) pavements. The jointed reinforced concrete pavement (jrcp) has been very successful in indiana's highway network. The pavement life span between major maintenances was proven to be considerably long (15-20 years). The purpose of this study is to evaluate concrete pavement restoration (cpr) techniques asviable alternatives to the placement of bituminous overlay layers. Statistical inferences were obtained for the effect of these cpr techniques on the improvement in ride comfort (represented by roughnessmeasurements) and safety against skidding (represented by skid resistance or friction measurements). In addition, applying cpr techniques and then resurfacing (adding overlay layers) were compared against two consecutive resurfacing applications. This coparison was madeto evaluate the cpr techniques in case future resurfacing is warranted to increase the pavement structural capacity. It was concluded that the cpr techniques have improved the ride comfort and friction (skid resistance) numbers significantly. Cost-effeciveness of cpr techniques may be doubtful, however, especially when the structural value of the rehabilitated pavement IS MARGINAL AND NEEDS TO BE INCREASED WITH OVERLAYS. THIS PAPER APPEARS IN TRANSPORTATION RESEARCH RECORD NO. 1215, PAVEMENT MANAGEMENT AND REHABILITATION.
Samenvatting