Rutting Performance of Dustrol Rehabilitation under TxMLS Trafficking with Increased Tire Pressure.

摘要

Following the testing of test pad N1 on northbound US 281 in Jacksboro, Texas, the TxMLS was moved to pad N2. The test plan was to traffic the pad with the tire pressure set at 750 kPa. All other controllable variables remained identical to those used for the testing of N1. The N2 pavement's structural composition is essentially the same as that for N1, with no thermal cracks in the central 6 m of the test pad. However, the pavement's response to the falling weight deflectometer (FWD) load differed. A total of 500,000 load applications were completed on each pad. Data were collected during the testing and supplemented with other relevant information from the Jacksboro test program. The results obtained from test pad N2 were then compared with those from test pad N1 and analyzed diagnostically to determine whether the effect of the increased tire pressure could be quantified. In the same vein, the aim was to validate the analytical model that was used in Report 1814-1 (Hugo et al. 1999a). This report presents the findings.