Cost Analysis for use of SBS Modifier in Asphalt Pavement using a Performance-based Fracture Criterion

ABSTRACT The effect of SBS modifier on cracking resistance of asphalt mixtures has been evaluated. The benefit of SBS modifiers appeared to be primarily derived from a reduced rate of micro-damage accumulation, which was reflected in a lower m-value without a reduction in fracture limit or healing rate. A cost analysis for use of SBS modifier in asphalt pavements was conducted using the performance-based fracture criterion, Energy Ratio. Cost analyses indicated that the construction cost of the AC layer would be reduced by up to 30% by SBS modification.