Determinação de propriedades mecânicas e físicas de argamassa reforçada com fibras de coco e sisal

Abstract

The use of natural fibers as reinforcement in mortar are the object of study in the formation of new materials for the manufacture of components for the construction industry, because of its low cost, have high availability, reduced power consumption for its production and not cause impact to the environment. Such use also has great socioeconomic importance as add value to products grown successfully in the Brazilian Northeast. The aim of this work is to make an experimental investigation to determine the physical and mechanical properties of mortar reinforced with vegetable fiber of sisal and coconut, so these composites can be used as an alternative for manufacturing some building materials such as mortar plates and vertical fence panels. We used the addition amount of 0.25% relative to the total volume of mortar on two mixtures of cement and sand, 1:5 and 1:6. Experiments were performed to determine the consistency index fresh, tensile strength in bending, tensile strength in diametrical compression, impact resistant body and tough water absorption by immersion. The mortar with addition of sisal fibers showed better results than the mixture with coconut fibers.