Monitoring hydration process and quality of sand grouted with microfine-cement using shear wave velocity and electrical conductivity measurements

Hyunwook Choo, Hongyeop Nam, Changho Lee, Woojin Lee, Susan Burns

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study aims at monitoring the grouting status such as hydration process and quality of sand grouted with microfine-cement using shear wave velocity (Vs) and electrical conductivity (EC) measurement techniques. The microfine-cement with the maximum particle size < 15 μm and the three angular sands with median particle sizes ranging from 0.47 mm to 1.01 mm were used in this study. The testing specimens were prepared at relative density ~ 70% and water to cement ratio = 1.0, 1.5, and 2.0 in a split plastic mold for the real time continuous measurements of Vs and EC, and for the unconfined compression tests at the end of curing time of 3, 7, 14, and 28 days. The results demonstrate that both unconfined compressive strength (UCS) and Vs show almost constant values after the curing period of 20-28 days; while, the variation of EC is negligible after the curing period of 10-20 days. Therefore, the shear wave velocity measurement technique can be superior to electrical conductivity measurement in terms of monitoring of hydration process of tested sands grouted with microfine-cement. However, both Vs and EC show strong linear relationship with UCS of tested materials, reflecting both non-destructive testing methods can be beneficially used for the quality evaluation of grouted materials.

Original languageEnglish
Title of host publication7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
EditorsErdin Ibraim, Alessandro Tarantino
PublisherEDP Sciences
ISBN (Electronic)9782759890644
DOIs
Publication statusPublished - 2019 Jun 25
Event7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 - Glasgow, United Kingdom
Duration: 2019 Jun 262019 Jun 28

Publication series

NameE3S Web of Conferences
Volume92
ISSN (Print)2555-0403
ISSN (Electronic)2267-1242

Conference

Conference7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
CountryUnited Kingdom
CityGlasgow
Period19/6/2619/6/28

ASJC Scopus subject areas

  • Environmental Science(all)
  • Energy(all)
  • Earth and Planetary Sciences(all)

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    Choo, H., Nam, H., Lee, C., Lee, W., & Burns, S. (2019). Monitoring hydration process and quality of sand grouted with microfine-cement using shear wave velocity and electrical conductivity measurements. In E. Ibraim, & A. Tarantino (Eds.), 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 [11012] (E3S Web of Conferences; Vol. 92). EDP Sciences. https://doi.org/10.1051/e3sconf/20199211012