The Life Cycle Energy Consumption and Emissions of Asphalt Pavement Incorporating Basic Oxygen Furnace Slag by Comparative Study

Basic Oxygen Furnace Slag (BOF), as alternatives for aggregate in asphalt pavement construction, is beneficial to the environment by reducing land occupation and resource consumption. However, quantitative effects on energy consumption emissions reduction remains poorly understood due unavailability of local life cycle inventory. Therefore, its LCI needs be built accounting properties BOF terms high porosity dust content BOF, rainy interference condition that efficiency production, transportation distance. Here we investigated global warming potential (CO2-eq emission) incorporating performing a case study with uncertainty analysis. Five scenarios were elaborated performed study. The results show required production 0.024 MJ/kg, approximately half crushed stone 0.044 MJ/kg. pavements can reduce up 12% emission compared ordinary pavement. Considerably more negative impacts weather than natural concluded. Monte Carlo simulation indicates order magnitudes values varied, from materials extraction maximum contributor transportation. benefits utilization are gradually offset increased transport distances displacement ratios fine stones, increase fuel mixing,