Ferrocement Laminates Research Articles

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.

Strengthening of RC beams with ferrocement laminates

In this paper methods of repair and strengthening of reinforced concrete beams using ferrocement laminates attached onto the surface of the beams are reviewed. Investigation into the transfer of forces across the concrete/ferrocement interface, the effects of the level of damage sustained by the original beams prior to repair, and the results of repeated loading on the performance of the strengthened beams are discussed. The results show that ferrocement is a viable alternative strengthening component for the rehabilitation of reinforced concrete structures.

Ferrocement laminates for strengthening RC T-beams

The flexural behaviour of reinforced concrete T-beams strengthened with thin ferrocement laminates attached to the tension face was investigated. Twelve simply-supported beams were tested under concentrated loads at mid-span. The ferrocement laminates were attached using ‘L’-shaped mild steel round bars as shear connectors. The parameters that were varied include the spacing of the shear connectors, method of surface preparation and the volume fraction of reinforcement in the ferrocement laminates. Performance was gauged in terms of cracking characteristics, mid-span deflection, stiffness, and ultimate load capacity. The results showed that use of closely spaced shear connectors and proper surface preparation resulted in improved serviceability and flexural capacities.