Experimental and analytical investigation of ferrocement–concrete composite beams

The use of cementitious composites for infrastructure applications is becoming more popular with the introduction of new high performance materials. Ferrocement laminates are introduced to enhance the overall performance of structures, such as composite bridge decks, beams, bearing walls, etc. This paper presents the results of an experimental and analytical study done on composite beams made of reinforced concrete overlaid on a thin section of ferrocement (cement paste and wire mesh). In particular, the method of shear transfer between composite layers is examined. Various types of beam specimens with various mesh types (hexagonal and square) are tested under a two-point loading system up to failure. Results from experimental data are compared to those from non-linear analysis as well as a finite element study to model the overall non-linear behavior. Results show that the proposed composite beam has good ductility, cracking strength and ultimate capacity.