It’s an undeniable truth that the environmental impacts of bicycle road infrastructure are crucial, given a hundred kilometres of roads paved with asphalt. However, the environmental impact of asphalt concrete have not been fully determined. Recently, significant research and surveys are being conducted, which recognize the importance of the global warming potential (GWP) impacts of bicycle roads. In this context, the aim of this study is to evaluate the GWP impact of asphalt concrete by using raw materials and combining it with reclaimed asphalt aggregate (RAP) in two different percentages (20%) and (40%) to determine the benefit of using RAP and it impact on the to reduction of construction CO 2 emissions. Within the framework of this study, a hypothetical case using the life cycle assessment methodology was conducted. The life cycles of asphalt concrete (AC) and AC combined with RAP were comparatively assessed limited with material production phase, and it was determined which alternative has fewer GWP impacts during this phase. It was noticed that the AC combined with 40% of RAP has the fewest GWP compared to the AC with virgin material.
Qatrameez et al. (Thu,) studied this question.