Bond strength of tension bars in high-and normal strength concrete beams

Abstract EN

Sixty beams, obtained from the literature, have been studied in this work.

All these beams, failed in development of deformed bars in tension.

Most ultimate bond stress equations are based on normal strength concrete tests.

Regression analysis led to a proposed design equation for bond strength of deformed bars in tension.

This method is shown to be a safe and at the same time giving a coefficient of variation (COV) of 13.

56 present this value is lower than all the (COV) obtained for the 5 existing code methods.