EFFECT OF UTILIZING FOUNDRY SAND AS MINERAL FILLER IN BITUMINOUS CONCRETE MIXTURE DESIGN

Bituminous concrete is one of the most expensive and high-priced flexible pavement layers utilized in surface courses. The bituminous mixtures are effectively designed to meet the design criteria of stability and durability despite their high material cost. Mineral filler that has passed through a 0.075 mm sieve plays an essential function in bituminous mixtures. The Asphalt Institute suggests using 4 to 8% filler in asphalt concrete. Common filler materials, such as cement, lime stone, granite powder, and so on, are not easily and affordably available in India. In India, foundry sand is thought to be less expensive and more abundant. The purpose of this study is to determine the influence of Foundry sand mineral filler on the behaviour of bituminous concrete mixtures. For the comparison, the Marshall procedure of mixture design was adopted. Marshall stabilities of mixtures with 25, 50, 75, and 100 percent foundry sand (FSMF) and traditional mineral filler (IBPMF0) were determined to be 23.07 KN, 23.25 KN, 23.72 KN, 23.89 KN, and 23.16 KN, respectively, satisfying the Marshall Design minimum requirements of 9 KN. The study suggests that FSMF might be used as mineral filler in bituminous mixtures.