Development of Measurement and Monitoring Method for Crack Width in the Concrete by Moiré method

Abstract

It is very important to measure the deformation of the structural parts of the large constructions for the health onitoring or damage evaluation of the constructions. The Moiré methods are measurement methods of the deformation using moiré phenomena which can be observed when two grids were overlapped. In this study, a new method to measure the crack width of the concrete structural materials using Moire method has been developed. The growth of the crack width in the concrete specimens with model grid during splitting tensile test was measured by this method.