Abstract
Synopsis The anchorage failure of reinforcing bars is analysed, and it is shown that two modes of failures are possible: splitting or bond failure. It is concluded that the anchorage capacity cannot be estimated by means of a standard specimen, since splitting failure is dependent upon the geometry of the cross-section. A simple method for calculating the resistance to splitting is proposed, and a test method for determining the bond strength is presented. Test results are shown from a series of 280 specimens exposed to various maximum temperatures, and a relation between the bond strength and the ultimate limit stress of concrete under plane strain conditions is indicated. The influence of high temperatures upon the anchorage resistance is explained, and the theory is illustrated by examples.
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