Published Paper Details:

Flexible pavement is being used in the road construction process for a longer period of time. Bitumen, coarse aggregate, crush sand and fillers are the major constituents of the bituminous pavement. Recycled glass in the form of crushed culets or granules was used as an alternative for the fine aggregate. Glass possessing properties of high durability and skidding resistance, promised to be a better counterfeit. Various tests were carried out on the raw materials for satisfying the norms laid by IS code. It was made sure that the raw materials were to fulfill the qualifying criteria of a good pavement mix. Along with the raw materials, testing of crushed glass was also carried out. Specific gravity, penetration, flash & fire point, softening point and ductility test were the tests performed on the bitumen. Tests on the aggregates included water absorption, flakiness index, Los Angeles abrasion, aggregate impact and moisture content test. To find out the acceptable amount of glass which could be added to the design mix of the pavement, moulds containing different amount of crushed glass replaced in the aggregate content were prepared. These moulds were tested for its stability and flow value. Marshall Stability test was conducted on the moulds prepared and the results obtained were compared to a standard mould prepared without any inclusion of glass. The results were analyzed and graphically plotted, which concluded that crushed glass could be used in design mix of flexible bituminous pavement up to 10% of total mass weight. Addition of crushed glass resulted with gain in the strength of the pavement mix. Along with testing of the strength of the mix, cost analysis was also carried out. Using crushed glass as a partial alternative for the aggregates proved to be sound both structurally and financially.