Shear Response of Fibrous High Strength Concrete Beams without Web Reinforcement

Authors

  • Sudheer Reddy, L. Faculty of Civil Engineering, Kakatiya Institute of Technology, Warangal – 506 015, Andhra Pradesh
  • Ramana Rao, N.V. Faculty of Civil Engineering, Jawaharlal Nehru Technological University, Hyderabad – 500 085, Andhra Pradesh
  • Gunneswara Rao, T.D. Faculty of Civil Engineering, National Institute of Technology, Warangal – 506 001, Andhra Pradesh

:

https://doi.org/10.9744/ced.13.1.50-58

Keywords:

High-strength concrete, shear, steel fiber reinforced concrete, shear span to depth ratio (a/d).

Abstract

The use of steel fibers to improve the mechanical properties of concrete has been the ongoing interest in the research work. This paper deals with one such improvement in the mechanical property of concrete, which is the shear strength. In this paper an attempt has been made to study the improvement of shear strength of high strength concrete beams (70 MPa) with different shear span to depth ratios (a/d = 1, 2, 3, and 4) and various dosages of fibers (0.4%, 0.8%, and 1.2% by volume of concrete), without shear reinforcement. The experimental work revealed that steel fiber volume has different influence at different shear span to depth ratios (a/d). The test results indicated an increase in the cracking shear resistance noticeably and ultimate shear strength moderately.

References

Romualdi, J.P., and Batson, G.B., Behavior of Reinforced Concrete Beams with Closely Spaced Reinforcement, Journal of the American Concrete Institute, Proceedings Vol. 60, No. 6, June 1963, pp. 775–789.

Voo, J.Y., Fostery, S.J., Variable Engagement Model for the Design of Fiber Reinforced Concrete Structures, ECI Conference on Advanced Materials for Construction of Bridges, Buildings and Other Structures III, Davos, Switzerland, 2005.

Gunneswara Rao, T.D., Rama Seshu, D., and Warnitchai, P., Effect of Steel Fibers on the Behavior of Over-Reinforced Beams Subjected to Pure Torsion, Civil Engineering Dimension, Vol. 12, No. 1, 2010, pp. 44–51.

Remmel, G., Zum Zug- und Schubtragverhalten von Bauteilen aus hochfestembeton. DafSb. Heft 444, Beuth Verlag Berlin, 1994.

Lin, W.T., Huang, R., Lee, C.L., and Hsu, H.M., Effect of Steel Fiber on the Mechanical Properties of Cement-based Composites Containing Silica Fume, Journal of Marine Science and Technology, Vol. 16, No. 3, 2008, pp. 214–221.

Imam, M., Vandewalle L., Mortelmans F., Shear Capacity of Steel Fiber High Strength Concrete Beams, Katholieke Universiteit Leuven, 1997.

Bukhari, I. A., and Ahmed, S., Evaluation of Shear Strength of High Strength Concrete Beams without Stirrups, The Arabian Journal for Science and Engineering, Vol. 33, No. 2B, October 2008, pp. 323–335.

Kim, J.K., and Park,Y.D., Prediction of Shear Strength of Reinforced Beams without Web Reinforcement, ACI Materials Journal, Vol. 93, No. 3, May- Jun 1996, pp. 213–221.

Chandrasheker Rao, T.D., Gunneswara Rao and Ramana Rao, N.V., An Appraisal of Shear Resistance of Ferro Cement Elements, Asian Journal of Civil Engineering, Vol. 7, No. 6, 2006, pp. 591–602.

IS 12089:1987, Indian Standard Code for Specification for Granulated Slag for Manufacture of Portland Slag Cement.

Erntroy, H.C., and Shacklock, B.W., Design of High Strength Concrete mixes, Proceedings of a symposia on Mix Design and Quality Control of Concrete, Cement and Concrete Association, London, May 1954, pp. 55–65.

Ilinoiu, G., Concrete Mix Design Optimized Approach, Civil Engineering Dimension, Vol. 6, No. 1, 2004, pp. 49–56.

Fauzi, M., Islam, I., Basri, M.H., An Expert System for Mix Design of High Performance Concrete, Journal of Advances in Engineering Software, Vol. 36, No. 5, May 2005, pp. 325–337.

Shah, S.P., New Reinforcing Materials in Concrete Construction, ACI Journal Proceedings, Vol. 71, No. 5, May 1974, pp. 257–262.

Shah, S.P., and Naaman, A.E., Mechanical Properties of Steel and Glass fiber Reinforced Concrete, ACI Journal Proceedings, Vol. 73, No.1, Jan. 1976, pp. 50–53.

Ganesan, N., and Ramana Murthy, J.V., Studies on Confined Steel Fiber Reinforced Concrete, The Indian Concrete Journal, November 1990.

Bazant, Z.P., and Kim, J. K., Size Effect in Shear Failure of Longitudinally Reinforced Beams, ACI Journal Proceedings, Volume 83, No. 2, Mar- Apr. 1986, pp. 456–468.

Zsutty, T. C., Shear Strength Predictions for Separate Categories of Simple Beam Tests, ACI Journal Proceedings, 68(2), 1971, pp. 138–143.

Downloads

Published

2011-03-03

How to Cite

Reddy, L., S., Rao, N.V., R., & Rao, T.D., G. (2011). Shear Response of Fibrous High Strength Concrete Beams without Web Reinforcement. Civil Engineering Dimension, 13(1), 50-58. https://doi.org/10.9744/ced.13.1.50-58

Issue

Section

Articles