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Build it up
You are kindly requested to revise your manuscript and submit the updated version to PFDM 2025 before 15-06-2025.
Below, you will find all relevant review comments from:
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Scientific Committee,
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Track Leaders,
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The Editorial Team
Please consider these carefully in preparing your revised manuscript.Once your revisions are complete, you may submit the updated version using the submission link provided at the bottom of this page.We appreciate your contributions and look forward to receiving your revised manuscript.

Holistic urban mining approach towards sustainable pavement design
Reviewer's feedback:
This paper presents an industrially relevant framework for sustainable pavement design through a holistic urban mining strategy. It introduces the integration of Clump Index (CI) and Refinement Index (RI) as parameters for managing reclaimed asphalt quality, and describes the stages of the development of LE2AP for the reuse of reclaimed mortar. However, the manuscript lacks quantitative data and experimental validation. It is not a paper for journal publication. But, its practical relevance makes it suitable for presentation.
• The manuscript lacks quantitative data, case study results, or test validations of CI and RI on mixture properties.
• Include data from pilot projects or simulations showing how LE2AP mixtures perform (in terms of mechanical performance, ageing, emissions reduction.
• Define how CI and RI are measured (standard protocols, units, variability).
• Clarify in Table 1 what does "+", "++", and "o" represent quantitatively? • The quality of the figures is low as they have low resolution.
• Expand references to include comparable frameworks or technologies from other countries. For example, the CIR from US FHWA.
• Minor grammar and text improvements are needed. For example: “The road network is now reach a upkeep phase” it can be “The road network has now entered a maintenance phase.”
• Finally a more open question for thought. While the LE2AP technology and the reuse of RA mortar fractions are promising, one might argue that the first priority in sustainable reuse should be the direct use of RA aggregates with as minimal processing as possible to conserve energy and reduce the number of processing steps. Now, the paper suggests significant effort and added complexity (decomposition, rejuvenation, heating, foaming) to recover fine mortar fractions, which are typically more degraded, binder-rich, and energy-intensive to process. So the question is what is the prioritization and trade-offs in urban mining? And what the trade-offs are in terms of performance, energy, cost, emissions, and process control in comparison to the more classical recycling approach were coarse RA fractions are used in combination with soft binders and/or rejuvenators? It might be that I am missing something important, but it would worth that the authors explain the choice of this process.
Editorial Decision for Conference Proceedings:
It is recommended that authors follow the template and make necessary changes. Suitable for conference publication.
Track Leader’s Comments (if any):
Please note that some of the track leader’s comments are intended as feedback for future improvements