Exploration on electrical resistance tomography in characterizing the slurry spatial distribution in cemented granular materials
作者机构：State Key Laboratory of Hydroscience and EngineeringTsinghua UniversityBeijing 100084China Institute of Science and TechnologyChina Three Gorges CorporationBeijing 100038China School of Geophysics and Information TechnologyChina University of GeosciencesBeijing 100083China
出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)
年 卷 期：2024年第18卷第3期
页 面：365-379页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0814[工学-土木工程]
基 金：The authors thank to the financial support from the National Natural Science Foundation of China(Grant Nos.52039005 and 51861165102) Scientific Research Project of State Key Laboratory of Hydroscience and Engineering(No.2022-KY-01) Beijing Sinoconfix Co.,Ltd.provides all of the polycarboxylate-based superplasticizer for the research.Mr.Weihua Zeng and Guiwen Li are gratefully acknowledged for their help in performing the experiments.
主 题：electrical resistance tomography cemented granular material grouting spatial distribution Archie’s law
摘 要：This study investigated the application of electrical resistance tomography(ERT)in characterizing the slurry spatial distribution in cemented granular materials(CGMs).For CGM formed by self-flow grouting,the voids in the accumulation are only partially filled and the bond strength is often limited,which results in difficulty in obtaining in situ samples for quality evaluation.Therefore,it is usually infeasible to evaluate the grouting effect or monitor the slurry spatial distribution by a mechanical method.In this research,the process of grouting cement paste into high alumina ceramic beads(HACB)accumulation is reliably monitored with ERT.It shows that ERT results can be used to calculate the cement paste volume in the HACB accumulation,based on calibrating the saturation exponent n in Archie’s law.The results support the feasibility of ERT as an imaging tool in CGM characterization and may provide guidance for engineering applications in the future.
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