INTERFACIAL BOND STRENGTH FOR SISAL FIBER CONCRETE COMPOSITE

In this study the interfacial bond strength of sisal fibre-concrete co mposite was determined using two methods. In one of these methods, a n egative value of -0.43 N/mm(2) was obtained. This method was ruled out because it is not possible to have a negative value for the interfaci al bond strength. The second method produced a value of 0.028 N/mm(2) and was accepted as a reasonable way of determining an approximate val ue for the interfacial bond strength between sisal, fibre and concrete . This was because the value obtained appeared reasonable when compare d with other bond strength values for other cement composites. Therefo re this second method was recommended for the determination of the int erfacial bond strength for other cement composites with fibres of simi lar characteristics as those of sisal fibres.