Applicability of excavated rock material: A European technical review implying opportunities for future tunnelling projects

Research output: Contribution to journalReview articleResearchpeer-review

Authors

  • Maximilian Haas
  • Laetitia Mongeard
  • Luisa Ulrici
  • Laetitia D'Aloia
  • Agnes Cherrey
  • Michael Benedikt

Organisational units

External Organisational units

  • CERN
  • ENS de Lyon
  • CETU

Abstract

The European Organization for Nuclear Research (CERN) is a world-wide leading organisation in the field of particle physics and operation of high-class particle accelerators. Since 2013, CERN has undertaken feasibility investigations for a particle accelerator, named Future Circular Collider (FCC) to be installed within a 90–100 km subsurface infrastructure likely to enter construction phase after 2030. An important aspect of its construction and environmental impact assessment is the management of approximately 9.1 million m 3 of excavated rock and soil. The aim of this paper is to thoroughly review the applications of excavated material across European subsurface construction projects from a technical point of view and set them into context with studies currently ongoing for FCC. We propose a conceptual flow model for rock characterisation with respect to both applicability of excavated material and tunnelling excavation techniques for future international subsurface construction projects. The review has revealed a vast and encouraging potential across different European construction sites efficiently using excavated rock and soil over the past decade ranging from concrete production, geopolymer production, embankment and landfilling. Examples of reviewed subsurface tunnelling projects are likely to be applied for FCC including concrete production, clay-sealing for embankments, geopolymer face stabilization, re-cultivation or agricultural usage as mixed soil material or sustainable waste disposal.

Details

Original languageEnglish
Article number128049
Pages (from-to)1-17
Number of pages17
JournalJournal of Cleaner Production
Volume315
Issue number15 September
DOIs
Publication statusPublished - 15 Sep 2021