Using two databases of paired falling weight deflectometer (FWD) and TSD, a regression analysis of the deflection bowls allowed the determination of a robust relationship between maximum deflections measured by the two devices. The second component included formalising the pavement layer moduli back-calculation algorithm for use in mechanistic‑empirical pavement treatment design. The first was to assess the potential use of traffic speed deflectometer (TSD) deflection for the design of pavement structural treatments. The project focused on two main components. New methods of using pavement deflection data were developed in the context of pavement structural rehabilitation treatment design.
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