2019 Volume 73 Issue 1 Pages 471-477
In this study, in order to verify the structural performance of a pre-cast RC slab by means of PC binding post-tensioning experimental and analytical investigations were conducted regarding the flexural behavior of a RC slab specimen with a crimp-style connecting joint using unbonded prestressing bars compared with one by the existing construction. As a result, it was confirmed that the unbonded prestressed pre-cast RC slab is superior in cracking resistance and damage control effects compared with the existing one because of a large increase in the flexural cracking load and a large decrease in the residual displacement, and a safety calculation of ultimate strength in flexure based on the flexural analysis substituting axial compressive force for effective prestress can be provided against the experimental result.
