Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4912745 | Construction and Building Materials | 2017 | 8 Pages |
Abstract
As a part of an ongoing research to develop construction joints using ultra-high performance concrete (UHPC) and reinforcements, shear performance of plain concrete construction joints is experimentally examined with push-off tests. Two different sets, namely, a combined set of UHPC (180Â MPa) and a set of UHPC (180Â MPa) and NSC (normal strength concrete, 30Â MPa) were considered, each of which had five cases of interface treatment including use of water jet, vertical joint, and three cases of a grooved joint. In addition, cases without any construction joint were also considered as a reference. Key factors affecting shear performance of individual construction joint were investigated in terms of shear strength, failure mechanism, and displacement responses. Experimental results show that steel fibers and grooved geometry greatly affect shear performance for the combined set of UHPC, while interlocking mechanism of coarse aggregates is crucial for the set of UHPC and NSC.
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Authors
Hyun-O Jang, Han-Seung Lee, Keunhee Cho, Jinkyu Kim,