BOND STRENGTH IN SELF-CONSOLIDATING CONCRETE

The use of self-consolidating concrete (SCC) is increasing in popularity in the United States. A significant amount of research interest is now being placed in evaluating the suitability of the material for use in mainstream structural applications. SCC can compact itself into complicated formwork and congested structural elements under its own weight without the need for vibratory compaction. SCC is required to be highly deformable yet resistant to segregation and bleeding. This paper examines the bond between steel reinforcement and SCC. The paper presents the results obtained from bond response tests performed on beam splice specimens cast with SCC. The bond stress distribution along the length of the reinforcing bars was measured with the aid of strain gauges placed along the length of the bar. Comparisons were made with results from beams cast with ordinary concrete with similar compressive strength to that of the SCC. The results were evaluated with emphasis on the equations for development length of reinforcing bars as specified by the American Concrete Institute Building Code (ACI 318).

• INTRODUCTION

• EXPERIMENTAL PROGRAM

• RESULTS

• CONCLUSIONS

• ACKNOWLEDGEMENTS

• REFERENCES