All Issue

2025 Vol.2, Issue 1 Preview Page

Research Article

Punching Shear Strength of Steel-Fiber Reinforced Low-Cement Concrete Slabs

강섬유 보강 저시멘트 콘크리트를 사용한 슬래브의 뚫림전단강도

Seong-Jin Park1
,
Hyeon-Jin Kim2
,
Ho-Jun Lee3
,
Hong-Gun Park4*
박 성진1
,
김 현진2
,
이 호준3
,
박 홍근4*
1Graduate Student, Dept. of Architecture and Architectural Engineering, Seoul National University, Seoul, 08826, Rep. of Korea
2Post-Doctoral Researcher, Dept. of Architecture and Architectural Engineering, Seoul National University, Seoul, 08826, Rep. of Korea
3Senior Researcher, POSCO, Steel Structure Research Group, Incheon, 21985, Rep. of Korea
4Professor, Dept. of Architecture and Architectural Engineering, Seoul National University, Seoul, 08826, Rep. of Korea
1서울대학교 건축학과 석사과정
2서울대학교 건축학과 박사후연구원
3POSCO 철강솔루션연구소 수석연구원
4서울대학교 건축학과 교수
*Corresponding Author
13 February 2025. pp. 58-70
PDF XML Citation
Abstract

The global demand for carbon neutrality requires the application of low-cement concrete (LCC) in building structure including protective facilities. This study tested punching shear strength of steel-fiber reinforced concrete (SFRC) slabs with LCC. For comparison, two types of binders were considered: 100 % ordinary portland cement (OPC) and 50 % of the OPC replaced by ground granulated blast-furnace slag. The material test results showed that the two binder types resulted in similar compressive strength of plain concrete and SFRC and similar flexural tensile strength of SFRC. In the slab tests, the SFRC slabs showed a 16-23 % increase in punching shear strength compared to counterpart reinforced concrete slabs without steel fibers. On the other hand, the effect of binder type and shear span ratio on punching shear strength was not significant. Based on existing punching shear strength models, a design model to predict the punching shear strength of the slab specimens was proposed, which agreed with the test results.

Keywords
Low-cement concrete
Punching shear strength
Ground granulated blast-furnace slag
Steel-fiber reinforced concrete

탄소중립을 위한 세계적인 노력은 방호시설에 저시멘트 콘크리트(LCC)의 적용을 필요로 하고 있다. 이에 따라, 본 연구에서는 LCC를 사용한 강섬유 보강 콘크리트(SFRC) 슬래브의 뚫림전단강도를 실험적으로 평가하였다. 비교를 위해, 100 % 보통 포틀랜드 시멘트(OPC)를 사용한 결합재와 OPC의 50 %를 고로슬래그로 대체한 결합재를 고려하였다. 재료 실험 결과, 두 결합재 유형은 무근 콘크리트와 SFRC에서 유사한 압축강도를, SFRC에서 유사한 휨인장강도를 나타냈다. 슬래브 실험 결과, SFRC 슬래브는 강섬유가 혼입되지 않은 RC 슬래브 대비 뚫림전단강도가 16-23 % 증가하였다. 반면, 결합재 유형과 전단경간비는 뚫림전단강도 및 파괴모드에 거의 영향을 미치지 않았다. 기존의 뚫림전단강도 모델을 기반으로 슬래브 실험체의 뚫림전단강도 예측을 위한 설계 모델을 제안하였으며, 이는 실험 결과와 잘 부합하였다.

키워드
저시멘트 콘크리트
뚫림전단강도
고로슬래그
강섬유 보강 콘크리트
References
1

ACI Committee 374 (2013) ACI 374.2R-13: Guide for Testing Reinforced Concrete Structural Elements under Slowly Applied Simulated Seismic Loads. Farmington Hills: American Concrete Institute.

2

British Standards Institution (BSI) (2005) BS EN 14651: Test Method for Metallic Fibre Concrete - Measuring the Flexural Tensile Strength. London: British Standards Institution.

3

Choi, K. K., Taha, M. M. R., Park, H. G., and Maji, A. K. (2007) Punching Shear Strength of Interior Concrete Slab-Column Connections Reinforced with Steel Fibers. Cement & Concrete Composites 29(5), 409-420.

10.1016/j.cemconcomp.2006.12.003
4

Concrete Society (2016) TR34: Concrete Industrial Ground Floors: A Guide to Design and Construction. Camberley: Concrete Society.

5

European Committee for Standardization (CEN) (2004) Eurocode 2: Design of Concrete Structures - Part 1-1: General Rules and Rules for Buildings. Brussels: European Committee for Standardization.

6

Kim, D. H., Jang, S. J., Kim, S. W., Park, W. S., and Yun, H. D. (2021) Effect of Hooked-End Steel Fiber Volume Fraction and Aspect Ratio on Flexural and Compressive Properties of Concrete. Journal of the Korea Institute for Structural Maintenance and Inspection 25(3), 40-47.

7

Korea Construction Standards Center (2016a) KS F 2403: Test Method for Flexural Strength of Concrete. Seoul: Korea Construction Standards Center.

8

Korea Construction Standards Center (2016b) KS F 2405: Test Method for Compressive Strength of Concrete. Seoul: Korea Construction Standards Center.

9

Ministry of Land, Infrastructure and Transport (MOLIT) (2021a) KDS 14 20 01: General Provisions for Strength Design of Concrete Structures. Seoul: Ministry of Land, Infrastructure and Transport. (In Korean)

10

Ministry of Land, Infrastructure and Transport (MOLIT) (2021b) KDS 14 20 20: Design Code for Flexure and Compression of Concrete Structures. Seoul: Ministry of Land, Infrastructure and Transport. (In Korean)

11

Ministry of Land, Infrastructure and Transport (MOLIT) (2021c) KDS 14 20 30: Design Code for Serviceability of Concrete Structures. Seoul: Ministry of Land, Infrastructure and Transport. (In Korean)

12

RILEM TC 162-TDF (2003) Test and Design Methods for Steel Fibre Reinforced Concrete: σ-ε Design Method. Materials and Structures 36(262), 560-567.

10.1617/14007
13

Samad, S., Shah, A., and Limbachiya, M. C. (2017) Strength Development Characteristics of Concrete Produced with Blended Cement Using Ground Granulated Blast Furnace Slag (GGBS) under Various Curing Conditions. Sādhanā 42(7), 1203-1213.

10.1007/s12046-017-0667-z
14

Sumanth, D. and Kusuma, K. C. (2017) A Study on Partial Replacement of Cement with GGBS and Coarse Aggregate with Steel Slag. International Journal of Innovative Research in Science, Engineering and Technology 6(12), 22359-22366.

15

Tan, K. H. and Venkateshwaran, A. (2019) Punching Shear in Steel Fiber-Reinforced Concrete Slabs With or Without Traditional Reinforcement. ACI Structural Journal 116(3), 107-116.

10.14359/51713291
16

Wang, Q., Kim, D. H., Yun, H. D., Jang, S. J., and Kim, S. W. (2021) Compressive and Flexural Properties of Concrete Reinforced with High-Strength Hooked-End Steel Fibers. Journal of the Korea Institute for Structural Maintenance and Inspection 25(6), 209-217.

Information
  • Publisher :Korea Protective Facility Institute
  • Publisher(Ko) :한국방호시설학회
  • Journal Title :Protective Facility
  • Journal Title(Ko) :방호시설
  • Volume : 2
  • No :1
  • Pages :58-70
  • Received Date : 2025-01-31
  • Accepted Date : 2025-02-07
  • DOI :https://doi.org/10.23310/PF.2025.2.1.058
Journal Informaiton Protective Facility Protective Facility
Online Submission & Review System
  • KISTI Current Status
  • KISTI Cited-by
  • KCI 문헌 유사도 검사
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close