Performance Assessment Of Wisconsins Whitetopping And Ultra Thin Whitetopping Projects

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 338: Thin and Ultra-Thin Whitetopping summarizes available information to document how state departments of transportation and others are currently using thin and ultra-thin whitetopping overlays among various pavement rehabilitation alternatives. The report covers all stages of the proper application of whitetopping overlays, including project selection, design, materials selection, construction, maintenance, and eventual rehabilitation or replacement.

This paper examines the multi-year performance of the four Ultra-Thin Whitetopping (UTW) pavements in Brampton, including the aspects of design, selection criteria, how they were built, skid resistance, and subsequent maintenance experiences. The bonding of two dissimilar materials, cold climate performance and snow control activities will also be discussed. The goal is to provide guidance to other municipal authorities in the optimum use of UTW technology in heavy traffic, local streets and roads rehabilitation, extending the service life of existing deteriorated asphalt pavements. For the covering abstract of this conferenec see ITRD number E211271.