An Experimental Study to Analyze the Effect of Warm Mix Additives on the Performance of Bituminous Mix

The increasing demand for sustainable pavement construction has led to the development of warm mix asphalt (WMA) technology, which enables reduced production temperatures and improved environmental performance. Current experimental study investigates the effect of warm mix additives on the performance characteristics of bituminous mixes. Two additives, Zycotherm and Rediset LQ, were used with VG-30 bitumen for Bituminous Concrete (BC) Grade II and Dense Bituminous Macadam (DBM) Grade II mixes. Laboratory tests including Marshall Stability, Tensile Strength Ratio (TSR), and aggregate coating tests were conducted to evaluate mechanical properties and moisture susceptibility. The results indicated that the optimum binder content was 5% for BC and 4.5% for DBM. The optimum additive dosages were found to be 0.1% for Zycotherm and 0.5% for Rediset LQ. The inclusion of warm mix additives significantly improved stability, durability, and moisture resistance of the mixes. The study demonstrates that WMA technology not only enhances pavement performance but also contributes to energy efficiency and environmental sustainability.