Reuse of Hollow Concrete Blocks Waste in the Formulation of an Eco-Mortar Reinforced with Natural Fibers for Use in Filling Materials

As a fact of matter, the aim of this paper is to produce a new ecological mortar based on recycled aggregates from hollow concrete blocks waste and reinforced with natural Diss fibers for use in manufacturing filling materials and masonry blocks, for the purpose of reducing the impact of such waste on the environment on the one hand, and making the most of the Diss plant, which is abundant in Algeria, on the other. In virtue of which, for achievement purpose of this work, we partially substituted the crushed -stones sand (CS) of a mortar reinforced with Diss fibers with recycled sand (RS) from hollow concrete blocks waste at rates of 15%, 30% and 50%. Besides, the produced mortars were subjected to density, consistency and air occlusion tests in their fresh state; moreover, they have alike been subject to compressive strength, flexural tensile strength, water absorption by immersion and capillary action, chemical resistance to acid and alkali, and chloride ion penetration tests in the hardened state. As consequence, the results illustrated improvements in consistency, mechanical strength and resistance to chemical attacks, with a slight increase in chloride ion penetration.