Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
권호 표지
DOI QR코드

DOI QR Code

Suggesting Optimum Mix Proportion of Hardener for Soil-pavement Concrete Incorporating Natural Organic Lime and Magnesia-lime

천연유기석회 및 고토석회를 조합한 흙 포장 콘크리트용 경화재의 최적배합안 도출

  • Han, Min-Cheol (Department of Architectural Engineering, Cheong ju University) ;
  • Han, Jun-Hui (Department of Architectural Engineering, Cheong ju University)
  • Received : 2019.09.26
  • Accepted : 2020.02.15
  • Published : 2020.04.20
Download PDF
⟨ Previous Next ⟩

Abstract

Lots of soil-pavement concrete placed showed a number of problems such as decreasing strength, and durability. In this research, to provide a solution of the problem reported the wasting materials of natural organic lime and magnesia lime were used as a hardener to achieve sufficient performance of soil-pavement concrete. Namely, as a stimulus of blast furnace slag, the natural organic lime and magnesia lime were tested within the mix proportion of 0 to 10 % for each lime to make a new hardener. As a result, in the case of mortar with 1 to 3 % of cement to fine aggregate, 30 % replaced blast furnace slag showed the more favorable results with 5 to 5 % of mix proportion for natural organic lime and magnesia lime.

본 연구는 국내에서 시공된 많은 수의 흙 포장 콘크리트의 경우는 강도저하, 내구성 저하 등이 문제점으로 제기된다. 따라서 본연구는 이를 해결하기 위하여 석회류 재료인 천연유기 석회와 고토석회 등의 폐기물을 활용하여 흙 포장 콘크리트의 경제성, 품질향상을 목적으로 흙 콘크리트의 경화재를 개발하고자 하였다. 즉, 석회류 재료를 고로슬래그 미분말과 조합하여 자극재로 사용하여, 기존의 경화재의 재료를 대체하여 천연유기석회(H), 고토석회(G)의 석회류 조합비를 0: 10~10 : 0 범위에서 검토하였다. 연구결과, 모르타르 배합비 1 : 3, 결합재 조성비의 경우 BSC 30 석회류 재료조합비율은 천연유기석회와 고토석회를 5: 5의 비율로 혼합할 경우 시멘트 모르타르의 품질 측면에서 양호한 개발품이 얻어짐을 확인할 수 있었다.

Keywords

References

  1. Oh SW, Jo HD. Soil Pavement Method Using Special Soil Hardener. Journal of the Korean Geo-Environmental Society. 2016 Aug;17(3):18-25.
  2. Lee GH. Engineering Properties and applicability of soil mixed pavement with natural soil stabilizer [Ph.D. Thesis]. [Incheon (Korea)]: University of Incheon; 2012. 116 p.
  3. Kang SP, Kang HJ, Kim JH, Kim BK. Characteristics of soil pavement by red mud content and binder type. Journal of the Korean Recycled Construction Resources Institute. 2017 Mar;5(1):37-44. https://doi.org/10.14190/JRCR.2017.5.1.037
  4. Kang SP, Kang. HJ Hwang BI. Strength and mechanical properties of soil concrete using liquefied red mud according to addition method. Journal of the Korea Concrete Institute. 2018 Aug;30(4):411-8. https://doi.org/10.4334 /JKCI.2018.30.4.411 https://doi.org/10.4334/jkci.2018.30.4.411
  5. Jang BS, Kwon YG, Choi SW, Lee KM. Fundamental properties of cement composites containing lightly burnt MgO powders. Journal of the Korea Concrete Institute. 2011 Apr;23(2):225-33. https://doi.org/10.4334/JKCI.2011.23.2.225
  6. Lee SJ, Yoon GL, Lee YG, Lee KD, Kang IG, Kim HT, Baek SC. Shear strength characteristics of dredged soil with oyster shell binder. Journal of The Korean Geo-Environmental Society. 2007 Feb;8(1):27-32.
  7. Kim KM, Park SJ, Yoo JK, Lee EB. Investigation for utilization of separator bag filter cement. Journal of The Korean Recycled Construction Resources Institute. 2010 Sep;5(3):78-83.
  8. Lee HS, Park DW, Woo DS. A study on physicochemical and calcination processed characteristic of oyster shell. Journal of the Korea Academy Industrial Cooperation Society. 2009 Dec;10(12):3971-6. https://doi.org/10.5762/KAIS.2009.10.12.3971
  9. Sin SJ, Kim MS, Park KT, Park MY, Han MC, Han CG. Effects of aggregate soil on the fundamental properties of the concrete. Proceedings of Korea Concrete Institute; 2019 Nov 7; Byeonsan, Korea. Seoul (Korea): Korea Concrete Institute; 2019. p. 305-6.
  10. Eo SH, Hwang KH, Kim JG. Application of oyster shells as aggregates for concrete. Journal of the Korea Concrete Institute. 2002 Aug;14(4):540-8. https://doi.org/10.4334/JKCI.2002.14.4.540
  11. Lee SH, Kim WK, Kang SH. Hydration mechanism of ground granulated blast furnace slag. Magazine of the Korea Concrete Institute. 2012 Dec;24(6):31-4. https://doi.org/10.22636/MKCI.2012.24.6.31
  12. Han CG, Han MC, Choi SY. Effect of fine particle cement and recycled aggregates as alkali activator on the engineering properties and micro-structure of high volume blast furnace slag concrete. Journal of the Korea Institute of Building Construction. 2013 Dec;13(6):602-8. https://doi.org/10.5345/JKIBC.2013.13.6.602