Geomechanics and Engineering

  • 제12권5호
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  • Pages.739-752
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  • 2017
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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Evaluation of the grouting in the sandy ground using bio injection material

  • Kim, Daehyeon (Department of Civil Engineering, Chosun University) ;
  • Park, Kyungho (Department of Civil Engineering, Chosun University)
  • 투고 : 2016.10.03
  • 심사 : 2017.02.16
  • 발행 : 2017.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study was intended to evaluate the improved strength of the ground by applying the bio grouting method to a loose sandy ground. The injection material was prepared in the form of cement-like powder, with the bio injection material produced by microbial reactions. The grouting test was conducted under the conditions similar to the field where the bio injection material can be applied. In addition, the injection materials (cement and sodium silicate No. 3) used for Labile Waterglass (LW) method and the conventional grouting methodwere prepared through a two-solution one-step process. The injection into the specimens was done at a pressure of 150 kPa and then, with a bender element, their moduliof elasticity were measured on the 7th, 14th, 21st and 28th curingdays to analyze their strengths according to the duration of curing. It was confirmed that in all injection materials the moduli of elasticity increased over time. In particular, when 30% of the bio injection material was added to 100% cement, the modulus of elasticity tended to increase by about 15%. This confirmed that the applicability became higher when the bio injection material was used in place of the conventional sodium silicate.

키워드

과제정보

연구 과제 주관 기관 : Chosun University

참고문헌

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