Prediction of Mean and Design Fatigue Lives of Steel Fibrous Concrete Beams in Flexure

Abstract

The paper presents results of an investigation carried out to study the flexural fatigue strength of steel fibre reinforced concrete (SFRC). An experimental investigation was planned in which 180 SFRC beam specimens of size 100 × 100 × 500 mm were tested under four-point flexural fatigue loading. The specimen incorporated three different volume fractions i.e. 1.0%, 1.5% and 2.0% of corrugated steel fibres. Each volume fraction incorporated mixed steel fibres of size 0.6 × 2.0 × 25 mm and 0.6 × 2.0 × 50 mm in different proportions. The fatigue-life distributions of SFRC at a given stress level, is shown to approximately follow the two-parameter Weibull distribution. The parameters of the Weibull distribution for fatigue life of SFRC have been obtained from S – N relationships. Mean and design fatigue lives have been obtained for SFRC with different fibre volume fractions, each volume fraction containing different fibre mix proportions. It has been observed that SFRC having 1.0% fibre content with fibre mix proportion of 35% 50 mm + 65% 25 mm long fibres exhibits the highest mean and design fatigue lives.

Keywords

fatigue life flexure probability of failure SFRC weibull distribution

Get full access to this article

View all access options for this article.

References

Aas-Jakobsen

(1970). “Fatigue of concrete beams and columns”, Bulletin No. 70–1, NTH Institute for Betonkonstruksjoner, Trondheim, September, 148 pp.

Batson

Ball

Bailey

Lenders

and Hooks

(1972). “Flexural fatigue strength of steel fiber reinforced concrete beams”, ACI Journal, Proceedings, Vol. 69, No. 11, pp. 673–677.

Cachim

P.B.

Figueiras

J.A.

and Pereira

P.A.A.

(2002). “Fatigue behaviour of fibre reinforced concrete in compression”, Cement & Concrete Composites, Vol. 24, No. 2, pp. 211–217.

Daniel

and Loukili

(2002). “Behaviour of high strength reinforced concrete beams under cyclic loading”, ACI Structural Journal, Vol. 99, No. 3, pp. 248–256.

Feret

(1906). Etude Experimentale du Ciment Arm, Grauthier-Villiers, Paris, Chapter 3.

Gumble

E.J.

(1963). “Parameters in the distribution of fatigue life”, Journal of the Engineering Mechanics Division, ASCE, Vol. EM5, pp. 45–63.

Johnston

C.D.

and Zemp

R.W.

(1991). “Flexural fatigue performance of steel fiber reinforced concrete-influence of fiber content, aspect ratio and type”, ACI Materials Journal, Vol. 88, No. 4, pp. 373–384.

Zhang

and Stang

(1998). “Fatigue performance in flexure of fiber reinforced concrete”, ACI Materials Journal, Vol. 95, No. 1, pp. 58–67.

Kennedy

J.B.

and Neville

A.M.

(1986). Basic Statistical Methods for Engineers and Scientists, A Dun-Donnelley Publishers, New York, pp. 125–128.

10.

Lee

M.K.

and Barr

B.I.G.

(2003). “An overview of the fatigue behaviour of plain and fibre reinforced concrete”, Cement & Concrete Composites, Vol. 26, No. 4, pp. 299–395.

11.

Mohammadi

(2002). Behaviour of Steel Fibre Reinforced Concrete in Flexural Fatigue, Ph.D. Thesis, Department of Civil Engineering, IIT Roorkee, November, 304 pp.

12.

Ong

K.C.G.

Paramasivam

and Subramanian

(1997). “Cyclic behaviour of steel-fiber mortar overlaid concrete beams”, Journal of Materials in Civil Engineering, ASCE, Vol. 9, No. 1, pp. 21–28.

13.

B.H.

(1986). “Fatigue analysis of plain concrete in flexure”, Journal of Structural Engineering, ASCE, Vol. 112, No. 2, pp. 273–288.

14.

B.H.

(1991). “Fatigue-life distributions of concrete for various stress levels”, ACI Materials Journal, Vol. 88, No. 2, pp. 122–128.

15.

Ramakrishnan

Oberling

and Tatnall

(1987). “Flexural fatigue strength of steel fiber reinforced concrete”, SP-105-13, ACI Special Publication, pp. 225–245.

16.

Ramakrishnan

G.Y.

and Hosalli

(1989). “Flexural fatigue strength, endurance limit and impact strength of fiber reinforced concretes”, Transportation Research Record 1226, TRB, Washington, 1989, pp.17–24.

17.

Ramakrishnan

(1989). “Flexural fatigue strength, endurance limit and impact strength of fibre reinforced refractory concretes”, Proceedings, International Conference on Recent Developments in Fiber Reinforced Cement and Concrete, College of Cardiff, U.K.

18.

Spadea

and Bencardino

(1997). “Behaviour of fiber-reinforced concrete beams under cyclic loading”, Journal of Structural Engineering, ASCE Vol. 123, No. 5, pp. 660–668.

19.

Shi

X.P.

Fwa

T.F.

and Tan

S.A.

(1993). “Flexural fatigue strength of plain concrete”, ACI Material Journal, Vol. 90, No. 5, pp. 435–440.

20.

Tepfers

and Kutti

(1979). “Fatigue strength of plain, ordinary, and light weight concrete”, ACI Journal, Proceedings, Vol. 76, No. 5, pp. 635–652.

21.

Tepfers

(1979). “Tensile fatigue strength of plain concrete”, ACI Journal, Proceedings Vol. 76, No. 8, pp. 919–933.

22.

Tatro

S.B.

(1987). “Performance of steel fiber reinforced concrete using large aggregates”, Transportation Research Record 1110, TRB Washington, pp. 129–137.

23.

Taylor

P.C.

and Tait

R.B.

(1999). “Effects of fly ash on fatigue and fracture properties of hardened cement mortar”, Cement & Concrete Composites, Vol. 21, No. 3, pp. 223–232.

24.

Wei

Jianming

and Yun

(1996). “Study of the fatigue performance and damage mechanism of steel fiber reinforced concrete”, ACI Materials Journal, Vol. 93, No. 3, pp. 206–212.

25.

Wirsching

P.H.

and Yao

J.T.P.

(1970). “Statistical methods in structural fatigue”, Journal of the Structural Division, ASCE, Vol. 108, No. ST1, pp. 1201–1219.

26.

Wirsching

P.H.

and Yao

J.T.P.

(1982). “Fatigue reliability introduction”, Journal of the Structural Division, ASCE, Vol. 108, No. ST1, pp. 3–23.

27.

Yin

and Hsu

T.T.C.

(1995). “Fatigue behaviour of steel fiber reinforced concrete in uniaxial and biaxial compression”, ACI Materials Journal, Vol. 99, No. 1, pp. 71–81.