RCTDT501-DEFLEXION TEST EXECUTION
Introduction
Deflection testing is a very important and a non-destructive tool for evaluating pavement layers. There are a number of different methods of determining pavement deflection depending on the type of information required. Deflection testing can estimate the remaining life of a pavement, detect soft or wet areas of a new formation or provide the basis for determining areas of existing pavement that require rehabilitation. Note that deflection surveys are moisture sensitive and if testing after prolonged periods of wet weather the results will be higher than if testing in drought conditions. Deflection testing will only give an indication of the formation or pavement stiffness at the particular location at the particular time of testing. (Anthony Bretreger, Deflection testing of earthwork and pavement layers, February 2015).