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An Experimental Study on Filling Material for Bored Pile Using High Calcium Ash

고칼슘 연소재를 이용한 매입말뚝의 주면고정액에 관한 실험적 연구

Sang-Hwon Song1
,
Yang-Hyun Lim2
,
Se-Gwan Seo3
,
Dae-Sung Cho4*
송 상훤1
,
임 양현2
,
서 세관3
,
조 대성4*
1Nonmember, Professor, Department of Architecture, Collage of Jeonju Vision
2Nonmember, Researcher, Daewoong Company Ltd
3Member, Researcher, Zian Company ltd, 8th Woosuk University
4Student Member, Graduate Student, Department of Civil Engineering, Chonbuk National University
*교신저자. *Corresponding Author. 
30 December 2017. pp. 13-20
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Abstract

In this study, laboratory tests were performed to evaluate for new filling materials (ZA-Soil) for bored pile that were developed using by high calcium ash. As a result of laboratory test, the uniaxial compression strength of 2 types of ZA-Soil are shown 68.0% and 64.6% compared to ordinary portland cement. And it have a suitable flowability and environmental stability. Also, after 28days, uniaxial compression strength of material mixed with soil and high strength filling material (ZA-Soil 1) for bored pile is 1.10-1.23 times bigger than material mixed with ordinary portland cement.

Keywords
High calcium ash
Pile-Filling material
Laboratory test
Uniaxial compression strength

본 연구에서는 순환 유동층 보일러의 고칼슘 연소재를 활용하여 개발한 새로운 매입말뚝의 주면고정액(ZA-Soil)에 대한 성능 을 평가하기 위해 실내시험을 실시하였고, 보통 포틀랜드시멘트와의 비교평가를 실시하였다. 실내시험 결과, 매입말뚝의 고강 도 주면고정액(ZA-Soil 1)과 저강도 주면고정액(ZA-Soil 2)의 압축강도는 보통 포틀랜드시멘트 대비 68.0%와 64.6%인 것으로 나타났고, 적절한 유동성과 환경적 안정성을 확보하고 있는 것으로 나타났다. 또한 매입말뚝의 고강도 주면고정액(ZA-Soil 1)을 흙 재료와 혼합한 경우 재령 28일에서의 압축강도가 보통 포틀랜드시멘트를 사용한 경우의 압축강도에 비해 1.10~1.23배 큰 것으로 나타나 강도증진효과가 우수한 것으로 나타났다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 16
  • No :4
  • Pages :13-20
  • Received Date : 2017-07-07
  • Accepted Date : 2017-11-03
  • DOI :https://doi.org/10.12814/jkgss.2017.16.4.013
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