Strength and stiffness characteristics of cement paste-slime mixtures for embedded piles

Yong Hoon Byun, Mi Jeong Seo, Woo Jin Han, Sang Yeob Kim, Jong Sub Lee

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Slime is produced by excavation during the installation of embedded piles, and it tends to mix with the cement paste injected into the pile shafts. The objective of this study is to investigate the strength and stiffness characteristics of cement paste-slime mixtures. Mixtures with different slime ratios are prepared and cured for 28 days. Uniaxial compression tests and elastic wave measurements are conducted to obtain the static and dynamic properties, respectively. The uniaxial compressive strengths and static elastic moduli of the mixtures are evaluated according to the curing period, slime ratio, and water-cement ratio. In addition, dynamic properties, e.g., the constrained, shear, and elastic moduli, are estimated from the compressional and shear wave velocities. The experimental results show that the static and dynamic properties increase under an increase in the curing period but decrease under an increase in the slime and water-cement ratios. The cement paste-slime mixtures show several exponential relationships between their static and dynamic properties, depending on the slime ratio. The bearing mechanisms of embedded piles can be better understood by examining the strength and stiffness characteristics of cement paste-slime mixtures.

Original languageEnglish
Pages (from-to)359-370
Number of pages12
JournalComputers and Concrete
Volume31
Issue number4
DOIs
Publication statusPublished - 2023 Apr

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2021R1A5A1032433).

Publisher Copyright:
Copyright © 2023 Techno-Press, Ltd.

Keywords

  • cement paste
  • elastic modulus
  • elastic wave velocity
  • embedded pile
  • slime
  • uniaxial compressive strength

ASJC Scopus subject areas

  • Computational Mechanics

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