Evaluating circularity in pavements using mass and value-based indicators

S. C. Liu

doi:10.1080/14680629.2025.2483476

Evaluating circularity in pavements using mass and value-based indicators

2025-03-01

0

OA

AI

DOI：10.1080/14680629.2025.2483476

原文链接

原文求助

摘要

En 中文

The objective of this study was to evaluate the applicability of two quantitative circularity indicators, the material circularity indicator (MCI) and circular economy index (CEI) in pavement maintenance. Three technologies were assessed: resurfacing, in-situ rejuvenation, and warm-mix asphalt (WMA). MCI results indicated that in-situ rejuvenation and WMA exhibit the highest circularity (similar to 0.77), while resurfacing scored lower (0.66) due to higher virgin material use. In contrast, CEI suggested that in-situ rejuvenation (-30.8) achieved the highest circularity by minimizing material inputs, while WMA (-48.2) and resurfacing (-46.9) had lower CEI due to higher costs of virgin materials. Sensitivity analysis showed that WMA must achieve a minimum service life of over 9 years to match resurfacing in MCI and 13 years in CEI. These findings highlight in-situ rejuvenation as the most effective maintenance strategy, while also emphasizing the need for composite indicators integrating circularity with sustainability metrics for pavement evaluation and robust decision-making.

Keyword:

Circular economy

in-situ rejuvenation

warm-mix asphalt

material circularity indicator

and circular economy index

Evaluating circularity in pavements using mass and value-based indicators

摘要

期刊

机构

引用论文