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http://dx.doi.org/10.14346/JKOSOS.2012.27.6.099

Evaluation of the Crack Width of the Ultra High Performance Concrete(K-UHPC) Structures  

Kwahk, Imjong (SOC Research Institute, Korea Institute of Construction Technology)
Lee, Jungwoo (SOC Research Institute, Korea Institute of Construction Technology)
Kim, Jeesang (Department of Civil Engineering, Seo Kyeong University)
Joh, Changbin (SOC Research Institute, Korea Institute of Construction Technology)
Publication Information
Journal of the Korean Society of Safety / v.27, no.6, 2012 , pp. 99-108 More about this Journal
Abstract
Ultra High Performance Concrete(UHPC) has compressive strength higher than 180 MPa. The use of steel fibers in the dense UHPC matrix increases tensile strength, ductility and bond strength between UHPC and rebars. However, to apply the advance material behavior of UHPC to the design of a structure, we need design formulas. The crack formula is one of them. This paper investigated experimentally the bond behavior of a rebar and K-UHPC, the UHPC developed by Korea Institute of Construction Technology, and, modified CEB-FIP crack formula based on the test. In addition, this paper tested the crack behavior of K-UHPC reinforced with rebars to verify the modified crack formula. The result showed that the modified formula is reasonable to predict the width of cracks in the reinforced K-UHPC structures.
Keywords
crack width; UHPC; bond characteristics; pull-out test; direct tensile test;
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Times Cited By KSCI : 2  (Citation Analysis)
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