Computers and Concrete

  • 제20권2호
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  • Pages.145-154
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  • 2017
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Laboratory tests for studying the performance of grouted micro-fine cement

  • Aflaki, Esmael (Department of Civil and Environmental Engineering, Amirkabir University of Technology) ;
  • Moodi, Faramarz (Concrete Technology and Durability Research Center, Amirkabir University of Technology)
  • 투고 : 2015.03.25
  • 심사 : 2017.04.08
  • 발행 : 2017.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

In geological engineering, grouting with Portland cement is a common technique for ground improvement, during which micro-fine cement is applied as a slurry, such that it intrudes into soil voids and decreases soil porosity. To determine the utility and behavior of cements with different Blaine values (index of cement particle fineness) for stabilization of fine sand, non-destructive and destructive tests were employed, such as laser-ray determination of grain size distribution, and sedimentation, permeability, and compressive strength tests. The results of the experimental study demonstrated a suitable mix design for the upper and lower regions of the cement-grading curve that are important for grouting and stabilization. Increasing the fineness of the cement decreased the permeability and increased the compressive strength of grouted sand samples considerably after two weeks. Moreover, relative to finer (higher Blaine value) or coarser (lower Blaine value) cements, cement with a Blaine value of $5,100cm^2/g$ was optimal for void reduction in a grouted soil mass. Overall, study results indicate that cement with an optimum Blaine value can be used to satisfy the designed geotechnical criteria.

키워드

참고문헌

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피인용 문헌

  1. The prediction of compressive strength and non-destructive tests of sustainable concrete by using artificial neural networks vol.27, pp.1, 2017, https://doi.org/10.12989/cac.2021.27.1.021