Evaluation of the Extent of HMA Moisure Damage in Wisconsin as it Relates to Pavement Performance;Final rept. 2001-2003

摘要

The objectives of this study were to evaluate the relationship between the performance of asphalt pavements in the field and the TSR values measured in the laboratory on the original asphalt mixtures used in constructing the pavements. In addition, the study included evaluating the effects of anti-stripping additives on field performance and their impact on the cost of the production and construction of the pavements. To assess the moisture damage problem in the field, a total of 21 existing WisDOT pavement sections that were built to meet the specification prior to 1992, when the requirement of the TSR parameter was adopted, were selected to cover a wide range of locations and aggregate sources. The TSR data and the pavement condition data (PDI) for these projects were collected from the TSR database and the WisDOT Pavement Management Database, respectively. Analysis of this data indicated that there is no relationship between TSR and the field pavement performance as measured by the PDI reported in 2001. In addition, there was no relationship between the TSR and specific pavement distresses that are known to be related to the moisture damage (surface raveling and rutting). To evaluate the effect of using anti-stripping additive, a database study and a laboratory study were conducted.