ABSTRACT:With the ever-increasing road mileages worldwide, the focus of pavement construction has been shifted from new pavement to pavement maintenance and rehabilitation. A big challenge faced by achieving pavement construction sustainability is the huge consumption of capital, energy and non-renewable materials. In this study, an integrated eco-efficiency analysis (EEA) framework was developed and applied to compare two common asphalt pavement rehabilitation methods: hot-in-place recycling (HIRP) and milling-and-filling (M&F), for a real project. It was found that HIPR saved 5% cost and reduced 16% overall environmental impacts than M&F, while M&F saved 7% energy consumption than HIPR. The portfolio positions of HIPR and M&F provided by the EEA clearly indicate that HIPR is more eco-efficient than M&F for the studied project.
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