ASSESSING THE PROPERTIES AND USABILITY OF SELECTED RECYCLED FINE AGGREGATES IN COOL PAVEMENT CONSTRUCTION

Abstract

Risky and expensive management procedures have made construction waste a significant issue. However, construction material demand is rising. The study aimed to assess the selected recycled aggregates (Ceramic, Glass, Slag, and Roof Tiles) through physical and mechanical properties, lightness, skid resistance, and light irradiation behaviour. Physical and mechanical properties will characterize the studied materials, and other test results confirm the usability of the selected recycle aggregates as cool pavement construction material. The saturated and dry density of the slag aggregates (2.64 g/cm3 & 2.6 g/cm3) were the highest, and the roof tiles (2.27 g/cm3 & 2.13 g/cm3) were the lowest among the experimental recycled aggregates. Roof tile aggregates absorbed the highest percentage of water (6.61%), and the lowest absorption showed the glass aggregates (0.02%). The highest strength value showed roof tiles and slag aggregate mortar in different mix proportions, and glass aggregate mortar showed the lowest value in all conditions. The highest increased inside and surface temperature showed the slag aggregate made sample block, and the lowest showed the ceramic aggregate block during the light irradiation test. The skid resistance test value was between 75 and 83 for all test aggregate blocks. According to the colour test result, the ceramic block will reflect most of the light and hold the minimum; the slag block will hold the maximum. Ceramic aggregate represents an optimal choice for constructing pavements that exhibit both cool temperatures and high skid resistance. In some cases, the users' mental acceptance of recycled material as a construction material is a real challenge.