Waste Glass Powder as Partial Replacement of FA for Sustainable Paver Blocks

Abstract

Concrete pavers are finding their way more and more into major road projects as a replacement for bituminous pavements. This is due to its ease in construction and excellent durability characteristics. However, recent studies have pointed out to a trend of depleting sand supplies for construction purposes. Because of this, it has become significantly difficult to obtain river sand and the use of concrete pavers is expected to decline. In this paper, strength and durability characteristics of concrete pavers made using partially replaced fine aggregates with waste glass powder (20–35% replacement) were studied. From the study, it was found to be a promising alternative to sand. At 25% replacement, the pavers recorded a 7% increase in compressive strength and a 8% increase in split tensile strength from conventional concrete pavers. Also, the durability characteristics indicate glass powder to be an efficient replacement for sand. A 3% reduction in cost and a 3% decrease in density were also noted.