Nondestructive evaluation of hollow concrete block masonry with the use of the flat jack technique

Abstract

Flat jack is a non-destructive technique of structural evaluation that is usually applied in old brick masonry structures. The technique allows obtaining important properties of the masonry structure, as the compressive stress state, modulus of elasticity and compressive strength. There is a great demand for this type of analysis in modern buildings with hollow blocks. Neverless, the current technique is not applicable in these cases, due to some limitations in the equipments. The present work deals with the study of adapting the technique to allow its application in modern masonry structures. Thus, deeper studies about the current technique and knowing the main lines of reasearch on non-destructive techniques are necessary. A technical travel to the Drexel that recently built a new Non-Destructive Testing laboratory and have a good reputation on masonry studies is aimed in this project. Also aimed to visit the Atkinson-Noland & Associates company to benefit from their extensive experience in the use of flatjacks and to develop a new flatjack to be used in the Master program-testing while back to UFSCar. Also intented to participate and present a paper (if approved) at the 12th North American Masonry Conference. (AU)