저배합 흙시멘트의 역학적 특성에 관한 시험적 연구

Study on the Mechanical Properties of Low Mix Soil-Cement

  • 공길용 (농업기반공사 농어촌연구원) ;
  • 김현태 (농업기반공사 농어촌연구원) ;
  • 노종구 (농업기반공사 농어촌연구원) ;
  • 홍병만 (농업기반공사 정보관리실)
  • 발행 : 2001.11.01

초록

In order to expand agricultural lands in the western and southern coasts of Korean Peninsula, coarse soils excavated from hillsides have been used as fill materials for reclamation. In order to tackle with the problems and to confirm availability, research on soil improvement involve mixing cement to the fine wet soils. Required undrained shear strength$(C_u)$ for fill material was analysed to be 0.34~1.2 $kgf/cm^2$. It has been known that when cement is added to high water content marine clay its unconfined compression strength increased to 2 $kgf/cm^2$. Consolidation results show that pre-consolidation pressure increased to 1.8 $kgf/cm^2$and 3.4 $kgf/cm^2$ with the addition of 3% and 5% of cement respectively. This result shows that low-height embankments could be constructed without significant compression. Since the effectiveness of improvement may be different site by site, the mix design for each site is necessary in order to optimize it. The process is first to determine aimed shear strength and then optimum mix ratio of cement after carrying out a series of tests.

키워드

참고문헌

  1. 건국대학교 박사학위논문 시멘트계 고화재를 이용한 농로의 보조기충 안정처리 공법 공길용
  2. 연약점토지반의 표층처리 및 보강공법 실용화연구 농어촌진흥공사
  3. 한국농공학회지 v.27 no.4 석고플라스터 혼합토의 공학적 특성 정성모;도덕현
  4. 연약지반 천층안정 처리연구 한국건설기술원
  5. Proc. Seminar on Soil Improvement and Construction Techniques in Soft Ground Stabilization of soft clay with lime columns Broms,B.B.
  6. ASCE Soft Ground Improvement D.T.Bergado;L.R.Anderson;N.Miura;A.S.Balasubramaniam
  7. J. of Japan Soc. Soil Mech. and Found. Eng. v.34 no.4 Application of a deep mixing method with quicklime for the Ariake clay ground Miura,N.;Koga,Y.;Nishida,K.
  8. 土と基礎 v.32 no.5 石灰安定處理における철添加材量との强度 松尾新一郞
  9. 土と基礎 v.39 no.8 生石灰 スラグによ高 含水比火山灰節粘性土동上防止 石田 宏
  10. 第28回土質工學硏究發表會 セメント系固化材によるカォリン粘土安定處里土の壓密,せん斷特性 上 俊二
  11. セメント系固化材による地단盤改良メニェアル 日本セメント協會