Journal of Conservation Science (보존과학회지)

The Korean Society Of Conservation Science For Cultural Heritage (한국문화재보존과학회)
권호 표지
DOI QR코드

DOI QR Code

Composition and Strength Characteristics of Concrete Foundation for Affiliated Ward in Seoul Daehan Uiwon (General Hospital)

서울 대한의원(사적 제248호) 부속병동 콘크리트 기초의 조성과 강도 특성

  • Kang, San Ha (Department of Cultural Heritage Conservation Sciences, Kongju National University) ;
  • Kim, Dong Woo (Department of Cultural Heritage Conservation Sciences, Kongju National University) ;
  • Lee, Chan Hee (Department of Cultural Heritage Conservation Sciences, Kongju National University) ;
  • Kim, Hyun Mi (Archaeology Division, Hangang Institute of Cultural Heritage)
  • 강산하 (공주대학교 문화재보존과학과) ;
  • 김동우 (공주대학교 문화재보존과학과) ;
  • 이찬희 (공주대학교 문화재보존과학과) ;
  • 김현미 ((재)한강문화재연구원 유적조사부)
  • Received : 2016.07.22
  • Accepted : 2016.09.19
  • Published : 2016.09.20
Download PDF
⟨ Previous Next ⟩

Abstract

The Daehan Uiwon (Historic Site No. 248) in which the predecessor of Seoul National University Hospital is a crucial medical institution that built in the Korean Empire period. One of them, East 1 Affiliated Ward that attached to Daehan Uiwon was built with concrete foundation in 1908 and extended two times in 1935 and 1954. As a result of material scientific analysis for concrete foundation, all of the foundation is composed of mortar and stone aggregates, however, the mixing proportions between the aggregate and the mortar were confirmed to be different with construction periods. To determine the mixing proportion, and physical properties by ultrasonic velocity and rebound hardness, the concrete foundations by construction period were obtained. In result, 1954's mixing proportion of concrete between mortar and stone aggregate indicated the highest ratio of aggregates with 1 : 35, mean value of ultrasonic velocity and unconfined compressive strength were calculated with 450 m/s and 18.92 MPa in 1954's constructions that is the lowest values compared with other times. As a result, the difference characteristics of physical properties by construction periods are possible interpreted with porosities and mixing ratios of stone aggregates.

사적 제248호 대한의원은 서울대학교병원의 전신으로 대한제국시기에 만들어진 초대형 의료기관이다. 대한의원 동1병동의 건축은 1908년 초축 이후 두 차례(1935년, 1954년)의 증축과정을 거쳐 크게 세 시기로 구분된다. 콘크리트 기초에 대한 재료학적 분석 결과, 모든 시기의 기초부는 모르타르와 암석 골재로 이루어져 있으나, 시기별로 골재의 특징과 비율이 다른 것으로 나타났다. 건축시기별 콘크리트의 배합비를 산출하고 초음파 속도와 반발경도를 이용하여 물성을 산정하였다. 이 결과, 모르타르와 골재의 비율은 1954년의 기초부에서 1:35로 가장 높은 골재 비율을 보였으며, 초음파 속도와 일축압축강도는 1954년 기초부에서 각각 평균 450 m/s와 18.92 MPa로 가장 낮게 나타났다. 이와 같은 시기별 물성 차이는 골재의 배합특성과 공극률에 따라 발생한 것으로 해석된다.

Keywords

References

  1. Baek, D.I., Han, H.S., Kim, M.S., Jang, H.S. and Kim, C.H., 2009, An experimental study on the fundamental properties of lightweight aggregate concrete. Concrete Journal, 21, 335-336. (in Korean with English abstract)
  2. Chun, Y.G. and Lee, C.H., 2012, Nondestructive deterioration diagnosis for the former ore dressing plant in the Yongwha mine of registered cultural property No. 255. Journal of Conservation Science, 28(3), 235-245. (in Korean with English abstract) https://doi.org/10.12654/JCS.2012.28.3.235
  3. Hangang Institute of Cultural Heritage, 2015, Culture heritage detailed excavation work on advanced outpatient medical center extension work area in Seoul National University Hospital. Informality Report, 1-44. (in Korean)
  4. Iliev, I.G., 1966, An attempt to estimate the degree of weathering of intrusive rocks from their physicalmechanical properties. Proceedings of the International Congress on Rock Mechanics, 1, 109-114.
  5. Jo, Y.H., 2011 Physical deterioration evaluation and structural safety diagnosis of stone cultural heritage using nondestructive precision technology. Ph.D. thesis, Kongju National University, Gongju, 89-193. (in Korean with English abstract)
  6. Jo, Y.H. and Lee, C.H., 2015, A study on selection of ultrasonic transducer and contact material for surface irregularities of stone cultural heritage. Journal of Conservation Science, 31(3), 267-278. (in Korean with English abstract) https://doi.org/10.12654/JCS.2015.31.3.07
  7. Kim, J.Y., Ha, E.Y., Lee, M.S. and Lee, C.H., 2012, Material analysis and deterioration evaluation of foundation stones and holy stone relics in Myeongdongseongdang cathedral, Korea. Journal of Conservation Science, 28(4), 305-319. (in Korean with English abstract) https://doi.org/10.12654/JCS.2012.28.4.305
  8. Kim, R.H., Lee, S.M., Jang, S.Y. and Lee, C.H., 2009, Interpretation of firing temperature and material characteristics of the potteries excavated from the Nongseori site in Giheung, Korea. Journal of Conservation Science, 25(3), 255-271. (in Korean with English abstract)
  9. Lee, C.H., Jo, Y.H. and Chun, Y.G., 2009, Establishment of ultrasonic measurement and correlations of direct-indirect method for weathering evaluation of stone cultural heritage. Journal of Conservation Science, 25(3), 233-244. (in Korean with English abstract)
  10. Lee, C.H., Kim, J. and Lee, M.S., 2010, Petrography and provenance interpretation of the stone moulds for bronze daggers from the Galdong prehistoric site, Republic of Korea. Archaeometry, 52, 31-44.
  11. Lee, C.H., Kim, Y.T. and Lee, M.S., 2007, Provenance presumption for rock properties of the five storied stone pagoda in the Jeongrimsaji temple site, Buyeo, Korea. Journal of the Geological Society of Korea, 43, 183-196. (in Korean with English abstract)
  12. Lee, I.S., 2011, A study on the material properties of reinforced concrete used in modern concrete structures. Master's thesis, Dong-a University, Busan, 1-30. (in Korean with English abstract)
  13. Lee, S.H., 2008, Study using schmidt hammer-impact-echo test method for the comparison of the compressive strength of concrete. Master's thesis, Hanyang University, Seoul, 10-14. (in Korean with English abstract)
  14. Turgut, P. and Kucuk, O.F., 2006, Comparative relationships of direct, indirect and semi-direct ultrasonic pulse velocity measurements in concrete. Russian Journal of Nondestructive Testing, 42(11), 745-751. https://doi.org/10.1134/S1061830906110064
  15. Uchida, E., Cunin, O., Suda, C., Ueno, A. and Nakagawa, T., 2007, Consideration on the construction process and the sandstone quarries during the Ankor period based on the magnetic susceptibility. Journal of Archaeological Science, 34, 924-935. https://doi.org/10.1016/j.jas.2006.09.015
  16. Yeon, G.W., Yoon, S.C. and Song, I.C., 1987, An inference of the compressive strength of concrete by the combined rebound value-ultrasonic pulse velocity method. Architectural Institute of Korea, 3, 161-168. (in Korean with English abstract)