Flexible road pavement structural condition benchmark methodology incorporating structural condition indices derived from Falling Weight Deflectometer deflection bowls (original) (raw)

A benchmark analysis methodology utilising the imbedded structural response knowledge of the whole deflection bowl measured with the Falling Weight Deflectometer (FWD) was developed for comparative evaluation of the structural condition of flexible pavement structures. Zones in the pavement structure are associated with structural condition via correlations with various slope parameters on the measured deflection bowl determined from simple spreadsheet calculations. Deflection bowl parameter benchmarking has found application at network level analysis with FWD data by a number of road authorities world-wide. A number of additional area parameters based on various areas under the deflection bowl have recently been added, These additional deflection bowl parameters were evaluated and found to strengthen the established pavement benchmark structural analyses as a preliminary evaluation tool. More recently it was illustrated that structural condition indices such as the internationally ...