Performance of Modified Bituminous Mix with GGBS as Filler Material

Abstract

India has one of the largest road networks over the world, fording over a total of 5.5 million kilometres, and virtually all of them are designed using natural materials. The usage of conventional materials has a compelling impact on the depletion of natural resources and effects the environment. The focus of this project is to combine GGBS (Ground Granulated Blast Furnace Slag) in Flexible Pavement as filler material. GGBS is an industrial by-product that is obtained from molten iron slag from blast furnaces. GGBS accounts for about 40 million tons as a waste product from iron industries alone in India. Due to an escalation in demand for iron, the iron ores are being extracted at vast quantities, and the by-product obtained from the iron industries is increasing swiftly and is creating disposal problems. This fine dust causes air pollution and further leads to health problems in living things, such as respiratory illnesses, cancer, cardiac issues, and eye conditions if these heaps of powdery dust are left exposed in the atmosphere. Stone dust, cement, and sand are mostly used in pavement construction as filling materials. GGBS has cementitious properties that confer us that it can be used as filler material as well. The efficient use of this material as filler in pavement design resulted in data compliance of Marshall mix design requirements, solve dumping problems, and reduce construction costs.