Caracterización del hormigón con fibras naturales del raquis de la palma africana de aceite y la estopa del coco

Abstract

The main objective of this titration work is to characterize concrete with 2 and 4% addition of natural fibers from the Rachis of african palm (palm fiber) and coconut steppe (torzales), under the Standards of the Ecuadorian Institute of Standardization-INEN and the Standards of the American Society for Testing of Material (ASTM). Natural fibers receive a prior alkaline treatment, in order to improve their resistance to alkalinity of cement, the length of all natural fibers is 1.5 in. and diameter 0.31 mm for palm fiber while for coconut torzales is 0.83 mm. The fibers to be added to the concrete are in a dry saturated surface state, to avoid variations of kneading water, with preliminary tests the dosage is obtained for each concrete mixture design, it is determined that the fibers reduce a percentage of the initial design resistance, therefore the dosages for each percentage of fiber concrete is greater than the required base resistance of 29 and 32 MPa. Concrete with the addition of 2% coconut torzales, presents better properties than concrete with addition of 2% palm fiber, in its efforts to compression, tensile strength, breakage module in bending beams and module of static elasticity.