Publisher： Trans Tech Publications
E-ISSN： 1662-9795|2016|722|241-246
ISSN： 1013-9826
Source： Key Engineering Materials, Vol.2016, Iss.722, 2017-02, pp. : 241-246
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Abstract
Technology of precast reinforced concrete finds its application in construction of buildings as well as transport infrastructure. Placement of a dapped-end beam on a corbel is one of the typical details for this construction technology. Designing of a dapped-end is crucial for the whole beam because any potential crack decreases the overall stiffness of the beam and can cause a collapse of the whole structure in the worst case. This paper presents results of an experimental research which was performed on a set of 6 small-scale dapped-end beams. Two different ways of prestressing were applied to experimental specimens and their ultimate-load bearing capacity were compared with plain concrete samples and with reinforced concrete samples. The results of this work suggest that horizontal prestressing technique is more efficient than vertical prestressing technique if the same prestressing force is applied.
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