Low-Carbon Materials and Practices for Asphalt Pavement Decarbonization

Document Type

Article

Publication Date

1-1-2025

Abstract

In recent years, the asphalt industry has significantly increased its emphasis on utilizing green additives and low-carbon materials to improve sustainability and minimize environmental impact and carbon footprint associated with paving materials and operations. The life cycle of asphalt pavements encompasses multiple stages, each contributing to the overall environmental impact and carbon footprint. These stages include production (A1–A3), construction (A4, A5), use (B1, B6, B7), maintenance and rehabilitation (B2–B5), and end-of-life (C1–C4) within a cradle-to-grave framework. This chapter will primarily focus on materials and practices aimed at reducing carbon emissions during production, construction, and maintenance stages. For construction stages, some of the most promising recycled materials such as reclaimed asphalt pavement (RAP), bio-rejuvenators and bio-asphalt, ground tire rubber (GTR), and warm mix asphalt (WMA) technology, as well as some of the practices for lowering the carbon emissions associated with plant operations during heating and drying of materials, will be discussed, alongside related case studies. On the other hand, for construction and maintenance stages, some of the key aspects such as equipment efficiency, fuel consumption, scheduling strategies, and selection of suitable practices based on their carbon footprint will be discussed.

Publication Title

Industrial Decarbonization Materials Methods and Developments

ISBN

[9781032821795, 9781040414156]

Link to Full Text

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