Abstract
An experimental study is described in which a range of rectangular and square blocks was tested to establish their bearing capacity. The blocks were loaded through small embedded steel plates with an axial duct to simulate the configuration of a prestressing anchorage. The bearing capacity is shown to be directly related to the minimum side dimension of the loaded face of the block and to the tensile strength of the concrete. A second phase of the study examines the validity of Guyon's “symmetrical prism” concept by testing blocks loaded through pairs of anchorages. The “symmetrical prisms” associated with each anchorage were chosen to correspond to a single anchor block from the first test series. The investigation forms the first part of a study of the behavior of reinforced anchorage zones in concrete.
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