一种创新的、无损的双组分灌浆收缩评估方法

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Tunnelling and Underground Space Technology Pub Date : 2025-05-01 Epub Date: 2025-02-27 DOI:10.1016/j.tust.2025.106424

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

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引用次数: 0

摘要

在这项研究中，众所周知的光纤布拉格光栅（FBG）技术首次被用于研究双组分浆液（2CG），这是机械化隧道回填阶段使用最多的材料。使用光纤光栅，可以监测自浆液凝胶化后的最初时刻起2CG的温度和收缩。所提出的程序和收缩率方面的结果表明了所提出方法的有效性，以及固化环境的重要性。在固定配合比设计下，无论采用何种膨润土，在水中养护16天后，收缩率均小于500 με，而在干燥环境下，收缩率均大于3000 με。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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

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.