Cost Benefit Analysis of Including Microsurfacing in Pavement Treatment Strategies and Cycle Maintenance, Executive Summary

摘要

The overall value of using thin surfacing maintenance treatments to extend and preserve the performance of existing pavements has been widely recognized. This study has focused on evaluating the cost effectiveness of commonly used individual treatments. In addition, an effort was made to identify additional beneficial treatments for consideration by PennDOT. This work consisted of three tasks, conducting a literature review, carrying out a survey of other states, and performing cost benefit analysis of maintenance treatments. Each task produced specific results. The literature review searched for information about the successful use of thin surface maintenance treatments and documentation of cost effectiveness. In addition to identifying commonly used treatments several less common treatments were researched as well. E-krete was identified as an additional thin surface treatment which has the potential to be beneficial. It has been approved by PennDOT for evaluation. Some questions about the effect of this material on asphalt pavement recycling were not answered in the literature.