Bloques de concreto con sustitución de residuos sólidos de polietileno de alta densidad

Abstract

The present work aims to study the addition of plastic as a partial component of the coarse aggregate in concrete for the design of ecological concrete blocks and to establish a linear equation, to estimate compressive strength for those block, varying cement, sand, gravel, and plastic volume. For the design of blocks, volume in three proportions were considered (cement / fine aggregate / coarse aggregate), this way four types of mix proportions were made (1/1/1, 1/1.25/2.5, 1/1.5/3 and 1/2/4). Coarse stone aggregate as a partial aggregate component was replaced by flake HDPE type plastic in 0, 25 and 50% replacement to coarse stone ratios. The compressive strength - unit weight of the concrete was measured after 30 days of curing. The research methodology was of a quantitative type of descriptive experimental design. The results were processed through a linear polynomial regression in the parameters analysis routine, using a statistical software SPSS 25 and their accuracy was assessed by INEN Ecuador 0858 and ASTM C39 parameters. The results revealed that 25 and 50% additions of plastic as a coarse aggregate reduced the unit weight of concrete to 9.7 and 12.02% respectively. But in such cases, the reduction of compressive strength was up to 29.17 and 48.5% respectively for effectiveness improvement reducing only the sample unit weight.