Asphalt pavement recycling has grown dramatically over the last few years as the preferred way to rehabilitate existing asphalt pavements. Rehabilitation of existing asphalt pavements has employed different techniques; one of them, cold in-place recycling with foamed asphalt (CIR-foam), has been effectively applied in Iowa. However, Iowa’s current cold in-place recycling (CIR) practice utilizes...

The major goal of sustainable practices is to preserve raw resources through the utilization waste materials as an alternative natural resources. Decreasing temperature required produce asphalt mixes contributes environmental sustainability by reducing energy consumption and toxic emissions. In this study, warm mix incorporating coarse steel slag aggregates was investigated. Warm produced at di...

At present, the international community emphasizes reducing carbon emissions, and national level includes peaking neutralization as development goals. As a landmark material for energy conservation emission reduction in road engineering, research on accounting needs to be further refined. Based introduction of basic concept, process current situation warm mix asphalt mixture, this paper focuses...

This chapter describes the methodology used in EPA’s Waste Reduction Model (WARM) to estimate streamlined life‐cycle greenhouse gas (GHG) emission factors for asphalt shingles beginning at the waste generation reference point. The WARM GHG emission factors are used to compare the net emissions associated with asphalt shingles in the following four waste management alternatives: source reduction...