Application of Intelligent Compaction Technology for Estimation of an Effective Modulus for a Multilayered Asphalt Pavement

In this paper, a procedure for estimation of effective modulus of a multilayered hot-mix asphalt (HMA) pavement using intelligent compaction (IC) is investigated. A complete coverage of the level of compaction of each of the asphalt pavement layers was recorded using the intelligent asphalt compaction inalyzer (IACA) atInterstate highway I-35 in Norman, Oklahoma, USA. The collected IACA data allow determination of the level of compaction (density) at any selected location, for each layer. Considering the IACA estimated density, dynamic modulus of each of the selected locations for an individual pavement layer was measured from laboratory developed master curves. Thereafter, effective modulus of the three-layer pavement system was calculated for all of the selected locations using Odemark's method. The proposed technique was verified by conducting FWD tests at these selected locations. Analyses of the results show that the proposed intelligent compaction technique may be promising in estimating the effective modulus of the pavement layers in a nondestructive manner.