All Issue

2015 Vol.17, Issue 3 Preview Page
Influence of steel fiber contents on corrosion resistance of steel reinforcement

강섬유 혼입량이 철근 부식저항성능에 미치는 영향

Seong-Do Kim1
,
Do-Young Moon2
,
Gyu-Phil Lee3*
김 성도1
,
문 도영2
,
이 규필3*
1Department of Civil Engineering, Kyungsung University, Professor
2Department of Civil Engineering, Kyungsung University, Assistant Professor
3Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Senior Researcher
1경성대학교, 교수
2경성대학교, 조교수
3한국건설기술연구원 지반연구소, 수석연구원
*교신저자. *Corresponding Author. 
31 May 2015. pp. 283-293
PDF XML Citation
Abstract

In order to evaluate corrosion resistance of steel fiber-reinforced concrete, accelerated chloride migration and surface resistivity tests were conducted. In addition air content of fresh concrete, compressive strength and water absorption were measured for investigating fundamental characteristics of concrete. Two different water-cement ratios(0.44, 0.5) and three steel fiber contents(0.25%, 0.5%, 1%) were considered as variables. Note that all specimens cast with same compaction work. As a results, corrosion resistance decreased as steel fiber contents increased regardless of water-cement ratio when the concrete was compacted with same amount of work done. However, for concrete with same steel fiber content, the lower water-cement ratio showed the better corrosion resistance. It is found that enhancement of fluidity and enough compaction should be done for corrosion resistance of SFRC.

Keywords
SFRC
Accelerated chloride migration test
Steel fiber content
Water-cement ratio
Compaction

본 연구에서는 강섬유보강콘크리트의 부식저항성능을 규명하기 위한 촉진염소이온확산시험과 표면전기저항시험을 수행하였다. 또한 배합평가를 위한 기초시험으로서 굳지 않은 콘크리트 공기량, 일축압축강도, 굳은 콘크리트의 흡습시험을 수행하였다. 실험변수는 두 종류의 물-시멘트비(0.44, 0.50)와 세 개의 강섬유 혼입량(0.25%, 0.5%, 1%)으로 선정하였다. 주목할 것은 모든 타설시 콘크리트의 다짐량은 동일하게 하였다. 시험결과, 동일한 작업량으로 다짐이 되었을 때, 물-시멘트비에 상관없이 두배합 모두에서 강섬유 혼입률이 증가함에 따라 부식저항성능이 감소하는 것으로 확인되었다. 그러나, 동일한 강섬유 혼입비에 대하여 배합의 물-시멘트비가 낮은 콘크리트의 부식저항성능이 우수한 것으로 나타났다. 따라서, 강섬유보강콘크리트의 타설시 유동성의 확보와 충분한 다짐이 염소이온침투저항성능을 확보하기 위하여 매우 중요하다고 판단된다.

키워드
강섬유보강콘크리트
촉진염소이온확산시험
강섬유혼입률
물-시멘트비
다짐
References
1
1.Abbas, S. (2014), “Chloride Ion penetration in reinforced concrete and steel fiber-reinforced concrete precast tunnel lining segments”, ACI Materials Journal, Vol. 111, No. 6, pp. 613-622.
2
2.Abrycki, M., Zajdzinski, A. (2012), “Effect of fibres on corrosion of stell reinforcement”, Master of Science Thesis, Chalmers University of Technology, p. 94.
3
3.Frazao, C., Camoes, A., Barros, J., Goncalves, D. (2013), “Durability of steel fiber reinforced self- compacting concrete”, Twin Covilha International Conferences 5th Int'l Conference on The Concrete Future 26-29., May 2013, Covilha, Portugal. pp. 93-102.
4
4.International Federation for Structural Concrete (fib) (2010) Bulletin 55-56: Model Code 2010 First Complete Draft. CEB/FIP. pp. 157-166.
5
5.Kim, B. (2010), “Transport coefficients and effect of corrosion resistance for SFRC”, Journal of the Korea Concrete Institute, Vol. 22, No. 6, pp. 867-873.
6
6.Miloud, B. (2005), “Permeability and porosity characteristics of steel fibre reinforced concrete”, Asian Journal of Civil Engineering (Building and Housing) Vol. 6, pp. 317-330.
7
7.NT BUILD 492 (1999), “Concrete, mortar and cement based repair materials: Chloride migration coefficient from non-steady state migration experiments”, NORDTEST, Finland.
8
8.Rapoport, J., Aldea, C.M., Shah, S.P., Ankenman, B., Karr, A. (2002), “Permeability of cracked steel fiber-reinforced concrete”, J. Mater. Civ. Eng. Vol. 14. pp. 355-358.
9
9.Selvi, M.T., Thandavamoorthy, Dr. T.S. (2013), “Studies on the properties of steel and polypropylene fiber reinforced concrete without and admixture”, International Journal of Engineering and Innovative Technology(IJEIT) Vol. 3., Issue. 1., pp. 411-416.
10
10.Shi, X., Xie, N., Fortune, K., Gong, J. (2012), “Durability of steel reinforced concrete in chloride environments : An overview”, Construction and Building Materials, Vol. 30, pp. 125-138.
11
11.Singh, A.P. (2013), “Strength and permeability characteristics of steel fibre reinforced concrete”, World Academy of Science, Engineering and Technology Int. J. Civ., Architectural, Structural and Construction Engineering Vol. 7, No. 10, pp. 405-410.
12
12.Singh, A.P., Singhal, D. (2011), “Permeability of steel fibre reinforced concrete influence of fibre parameters”, Procedia Engineering, Vol. 14, pp. 2823-2829.
13
13.Zinkaah, O.H. (2014), “Influence of steel fibers on the behavior of light weight concrete made from crushed clay bricks”, American Journal of Civil Engineering. Vol. 2, No. 4, pp. 109-116.
Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 17
  • No :3
  • Pages :283-293
  • Received Date : 2015-04-15
  • Revised Date : 2015-04-24
  • Accepted Date : 2015-04-28
  • DOI :https://doi.org/10.9711/KTAJ.2015.17.3.283
Journal Informaiton Journal of Korean Tunnelling and Underground Space Association Journal of Korean Tunnelling and Underground Space Association
Online Submission & Review System
  • NRF
  • KOFST
  • KISTI Current Status
  • KISTI Cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close