An innovative non-destructive approach for the shrinkage assessment in two-component grout application

IF 6.7 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Tunnelling and Underground Space Technology Pub Date : 2025-02-27 DOI:10.1016/j.tust.2025.106424

Aarathy Ezhuthupally Reghuprasad, Carmine Todaro, Francesca Pace, Daniele Peila, Alberto Godio

引用次数: 0

Abstract

In this study, a well-known technology known as the Fiber Bragg Grating (FBG) has been employed for the first time for the study of the two-component grout (2CG), the most used material for the backfilling phase in mechanised tunnelling. Using FBG, it has been possible to monitor both the temperature and the shrinkage of the 2CG since the first moments after the gelation of the grout. The procedure proposed and the outcomes presented in terms of shrinkage put alight the validity of the proposed approach, and the crucial importance of the curing environment. For a fixed mix design, values of shrinkage lower than 500 με have been founded after 16 days of curing in water irrespective of the tested bentonite, while in dry environment the shrinkage reached values higher than 3000 με.

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来源期刊

Tunnelling and Underground Space Technology 工程技术-工程：土木

CiteScore

11.90

自引率

18.80%

发文量

454

审稿时长

10.8 months

期刊介绍： Tunnelling and Underground Space Technology is an international journal which publishes authoritative articles encompassing the development of innovative uses of underground space and the results of high quality research into improved, more cost-effective techniques for the planning, geo-investigation, design, construction, operation and maintenance of underground and earth-sheltered structures. The journal provides an effective vehicle for the improved worldwide exchange of information on developments in underground technology - and the experience gained from its use - and is strongly committed to publishing papers on the interdisciplinary aspects of creating, planning, and regulating underground space.