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논문 기본 정보

자료유형
학술저널
저자정보
Young‑Jin Kim (Korea Institute of Civil Engineering and Building Technology) Won‑Jong Chin (Korea Institute of Civil Engineering and Building Technology) Se‑Jin Jeon (Department of Civil Systems Engineering)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.12 No.6
발행연도
2018.9
수록면
767 - 780 (14page)

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초록· 키워드

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When ultra-high performance concrete (UHPC) is fabricated as precast members such as in a UHPC segmental bridge, the joint design between the precast members can significantly affect the overall integrity and safety of the structure. Therefore, the structural behavior of the UHPC joint was experimentally investigated in this study with test variables including joint type, number and height of shear keys, type of filler, curing temperature, and lateral compressive stress. The UHPC considered in this study is the K-UHPC developed in Korea with a specified compressive strength as high as 180 MPa and high flowability. The joint shear strengths affected by the test variables were investigated in detail. The test results were also compared with two representative predictive equations for interface shear strength to determine an appropriate equation for the joint design of UHPC. These equations did not match well with the test data because they were originally proposed for normal strength concrete. However, the JSCE equation could be improved by modifying a coefficient to show good agreement with the test especially in the case of the dry joint with epoxy application.

목차

Abstract
1 Introduction
2 Test of UHPC Joints
3 Analysis of Test Results
4 Comparison of Experiment with Design Provisions
5 Conclusions
References

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