Properties of Concrete Containing Recycled Concrete Aggregate and Polymeric Coating Agent

Abstract

This study investigates the properties of concrete blended with concrete scrap aggregate and polymer impregnation. In order to create high-performance concrete with a water-cement ratio (w/c) by weight of 0.34 and aggregates from crushed concrete scraps with particle sizes ranging from 0.15 to 25.0 mm were used. According to ASTM C33, concrete containing river sand (NAR), crushed limestone (NCA), and polymer impregnation at 5 wt% of the water used in the concrete mix were compared to fine aggregates and coarse aggregates. The concrete under test includes compressive strength and integrity and as measured by ultrasonic pulse velocity. Based on the test results, it was revealed that the polymer impregnation had a lower rate of developing compressive strength than the control concrete. This rate significantly decreased at 28 days; the control concrete's compressive strength had decreased. However, when combined with a polymeric coating agent type 1, recycled fine concrete aggregate (RCAF) and natural crushed limestone (NCA) increased compressive strength by 10.26%.