Shear Behavior at the Interface Between Concrete and Steel Plate Exposed to Fire
YUAN Guang-lin
CHEN Jian-wen
JIA Yu-qin
XU Xiao-yan
Abstract：The shear behavior at the interface of concrete bonded to steel plate was examined after exposure of the structure to different temperatures (250, 350, 450 and 550 ℃). Three different strengths of concrete were used in the tests (C25, C30 and C35). The interfacial shear strength was observed to increase with an increase in concrete strength for a given temperature. The average increase was about 3% but the largest was nearly 8%. For a given strength of concrete the interfacial bond decreased in strength as the temperature increased. The bond strength was 50% of the un-heated strength after heating to 450 'C. After heating to 550 ℃ the strength was only 38% of the original strength. An expression relating the bond strength to the strength of the concrete and the heating temperature was derived from the test results.
Keywords：bonded steel platereinforcementfireconcreteshear behavior
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)