Author(s)

P. Stroeven and Z. Guo

Abstract

A study of the bond between steel bar or fibre reinforcement and the cementitious matrix is inherently complicated because of the se- cluded character of the phenomenon. Therefore, debonding was stud- ied along steel-matrix interfaces exposed at the specimen's surface. Effective use was made of the holographic interferometry technique, revealing debonding by discontinuities in the fringe patterns. In do- ing so, the effects of surface roughness of the steel bar and of fibre reinforcement in the matrix on the debonding phenomenon under pull-out conditions could be successfully envisaged. The mechanical problem has been also treated by the DIANA finite element system. The paper presents results

Keywords