CONCRETO LEVE COM ARGILA EXPANDIDA E POLIESTIRENO EXPANDIDO: Estudo de dosagens, comparativo de resistência à compressão e quantitativo de material

Abstract

Among the structural function materials, concrete is one of the most used in the world and one of its characteristics is its high self-weight. To reduce the structural efforts generated by the concrete's own weight and consequently lower the costs of buildings, construction companies have recognized the need to use lightweight concrete in civil construction. The most common way to obtain lightweight concrete is to introduce air into its composition and one of the alternatives for making it is to use porous aggregates in its mixture. The present work aims to analyze and compare the compressive strengths of conventional and lightweight concrete traces with the replacement of coarse aggregate by expanded clay and expanded polystyrene. The characterization of the aggregates was verified according to NBR NM 248 (2003), NBR NM 45 (2006), NBR NM 53 (2009) and NBR 9776 (1987). To determine the properties of the dosages, consistency and compressive strength were verified according to NBR NM 67 (1998) and NBR 5739 (1994). The results will indicate the analyzes carried out between conventional and lightweight concretes. Through this comparison it was possible to analyze the viability of lightweight concrete using expanded clay and expanded polystyrene as coarse aggregate in both compressive strength and material consumption.