Comparative Study of Cement Mortar Reinforced with Vegetable Fibers Alfa, Date Palm and Diss: Mechanical Properties and Shrinkage

Materials with less impact on the environment can be used if durability in the construction field is improved,incorporation of plant fibers in the cement matrix plays an interesting role. They are available at low cost and are renewable and biodegradable raw materials. The present work consists of studying the effect of cement mortar reinforcing with three types of plant fibers: Alfa(stipatenacissima), date palm and diss(Ampellodesmosmauritaniaus), with different lengths (0.5-1-1.5- 2 cm) on behavior in the hardened state. (Trial of traction by flexion, compression, endogenous withdrawal and withdrawal of desiccation. The results obtained for the mortars reinforced by the different lengths of vegetable fibers show that with the increase in fiber lengths, the flexural strength increases and a reduction in the compressive strength whatever the types of fibers used. They limit the propagation of endogenous shrinkage and desiccation at daytime and the surface of the fibers play a very important role on this phenomenon.