Experiment Design Approach to Nondestructive Testing of Pavements

Publisher Website
Google Scholar
Abstract
An analysis of the errors involved in both the nondestructive testing data collection and the modeling of a pavement structure is presented. The errors are separated into: (1) Random errors associated with the measuring devices; (2) random errors due to the intrinsic variability of the materials and pavement structures; and (3) systematic errors associated with the modeling of pavement structure, loading conditions, and material characterization. An analysis of the backcalculation process is conducted to investigate the effect of the errors on the backcalculated moduli. An experimental design approach is applied, using the first‐order approximation for the expected values and variance of the layer moduli. It is shown that (1) Mean values can be backcalculated from an average deflection bowl in which all random errors are reduced to a negligible value; and (2) the intrinsic variability of the materials can be correctly estimated only if the random errors associated with the measuring devices are eliminated...

This publication has 0 references indexed in Scilit: