Work

Novel automated repair approaches for masonry tunnels: Feasibility and sustainability

Year: 2025

Type: article

Abstract: Existing methods for patch repair in masonry tunnels are time-consuming, heavily reliant on manual labour, and inadequate to address the maintenance needs of the UK’s ageing Victorian railway tunnel network. This paper proposes a systematic framework to define innovative automated repair strategies by amalgamating various repair concepts, manufacturing techniques, and materials. Through this framework, the study examines 38 feasible alternatives, incorporating approaches such as robotic spraying, additive manufacturing, automated cutting, and the utilisation of advanced cementitious materials and composites. A thorough sustainability assessment, covering environmental, economic, social, and technical dimensions, guides the identification of the most appropriate repair solution. This assessment involves simplified process analysis, cost evaluation, life cycle analysis, and layered analysis, all integrated into a multicriteria decision-making (MCDM) methodology to derive a comprehensive sustainability index.

Source: Tunnelling and Underground Space Technology

DOI: 10.1016/j.tust.2025.106645

Authors: A. Blanco, E. Al-Ameen, A. Brown, P. Kinnell, S. Cavalaro

Institutions: Loughborough University, Network Rail

Language: English

Topic: Infrastructure Maintenance and Monitoring

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Sustainable cities and communities, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $3,820