期刊
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
卷 23, 期 6, 页码 823-832出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)MT.1943-5533.0000234
关键词
High-strength concrete column; External confinement; Fiberglass fly mesh; Standard aluminum fly mesh; 12.7 x 12.7 galvanized steel wire mesh; Ductility
A new idea is investigated in this study to reduce the cover spalling of high-strength concrete columns: installing relatively cheap materials such as household fly screen and wire mesh in the formwork of RC columns. Three materials were chosen in this study: fiberglass fly mesh (FGFM), standard aluminum fly mesh (SAFM), and 12.7 x 12.7 galvanized steel wire mesh (S12.7 WM). A total of 16 cylindrical specimens with a length of 925 mm and a diameter of 205 mm were cast and tested under concentric, eccentric, and pure bending loading. The testing results showed that S12.7 WM significantly improved the load-carrying capacity under both concentric and eccentric loading but did not significantly increase the ductility of the columns for each load case. FGFM and SAFM significantly improved the ductility of columns under concentric loading, but the significance decreased with the increase in eccentricity. DOI: 10.1061/(ASCE)MT.1943-5533.0000234. (C) 2011 American Society of Civil Engineers.
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