Aprovechamiento de los residuos provenientes de la industria maderera “Buenaño” para la elaboración de hormigón

Abstract

The aim of this research work was to use Eucalyptus (Eucalyptus) wood waste taken from Industria Maderera Buenaño located in Riobamba city for the production of concrete by mixing it with cement and hydrated lime. The methodology consisted of four steps, the first one was the physical characterization of the Eucalyptus sawdust by means of a granulometric analysis obtaining fine sawdust (particles smaller than 2mm) and coarse sawdust (particles smaller than 5mm and greater than 2mm), humidity tests showing values of 26.96 and 13.53%, and, density with values of 0.288 and 0.291 g/cm3 for fine and coarse sawdust respectively, the second step consisted of developing a design of mixtures with three input variables (cement composition, fine sawdust and coarse sawdust) and two response variables (compression strength and weight), making nine mixtures with a cement content of 500, 550 and 600 kg/m3 and sawdust content with a fine-to-coarse ratio of 60/40, 50/50, and 40/60 for each one. The third step consisted of preparing samples of previous mixtures and compression strength tests on them. Finally, a statistical analysis was carried out, results obtained in the experimental tests with the help of the Statgraphics software, determining that the mixture that simultaneously shows maximizing of compression strength and minimizing of concrete weight is the mixture C, composed of 500 kg/m3 cement with a ratio of fine-coarse sawdust of 40/60, presenting a compression strength of 45.58 kg/cm2 and a weight of 2.31 kg. It is recommended to carry out a study using different types of cement in the concrete to determine their influence on the final results.