Performance of Rigid Pavement Rehabilitation Treatments in the Long-Term Pavement Performance SPS-6 Experiment

Abstract

The results of a study conducted to assess the relative performance of different jointed rigid pavement rehabilitation treatments, including the influence of pretreatment condition and other factors, are presented. The data used in the study were drawn from the Long-Term Pavement Performance Studies' Specific Pavement Study (SPS) SPS-6 and General Pavement Study (GPS) GPS-7B experiments. The rehabilitation treatments used in the SPS-6 experiment were minimal and intensive nonoverlay repair, 4-in. asphalt overlays with minimal and intensive preoverlay preparation, 4-in. overlays with sawed and sealed joints, and 4- and 8-in. asphalt overlays of cracked and seated concrete slabs. Overall, the rigid pavement rehabilitation treatments in the SPS-6 experiment could be ranked from most to least effective in the following order: 8-in. overlay of cracked or broken and seated pavement, 4-in. overlay (of either intact or cracked or broken and seated pavement, with or without sawing and sealing of joints and with either minimal or intensive preoverlay repair), concrete pavement restoration with diamond grinding, and concrete pavement restoration without diamond grinding. Concrete pavement restoration with diamond grinding yielded an initial posttreatment international roughness index (IRI) of 1.05 m/km, on average, whereas restoration without diamond grinding yielded no benefit in IRI and in fact tended to leave the pavement rougher than before. In the long term, both restoration and overlay treatments reduced long-term roughness, rutting, and cracking levels compared with those on the control sections, but the conditions of the restored test sections are approaching those of the control sections faster than those of the overlay sections.

Novel Instance-Based Transfer Learning for Asphalt Pavement Performance Prediction

“…In general, each LTPP test section is 152 m long, each lane is 3.65 m, and all sections are monitored using the same standards. One of the main purposes of the LTPP program is to provide high-quality data for research, and a lot of studies have used the LTPP databases to understand the performance of various maintenance and repair strategies [37][38][39][40] and optimize maintenance decision-making processes [41]. The transfer learning conducted in this study requires a large amount of road-related source domain data, and most of the data in the LTPP database are wellobserved.…”

Engineered Cementitious Composites: An Innovative Concrete for Durable Structure

“…Significant reflective cracking and/or spalling may occur when relatively thin overlay is used (Marks 1989;Smith 2001). As for the saw and seal joints method, the state DOTs that documented their experience with this method reported marginal to good results (Kilareski and Bionda 1990;Hall et al 2003). The presence of joints may necessitate additional maintenance.…”