Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70626
標題: Shear behaviour of prestressed beams with high-workability concrete
作者: Lin, C.H.
Chen, S.T.
Lin, W.C.
關鍵字: concentric compression;columns
Project: Magazine of Concrete Research
期刊/報告no:: Magazine of Concrete Research, Volume 64, Issue 5, Page(s) 419-432.
摘要: 
The purpose of this study is to investigate the shear behaviour of prestressed beams made with high-workability concrete and normal concrete under static load. A total of 18 prestressed beam specimens were made in this study; nine were prestressed high-workability concrete beams, and the rest were normal concrete beams. The specimens were all 400 mm deep T-sections, tested with two concentrated loads. The test parameters included concrete strength, amount of prestress, shear span-to-depth ratio and spacing of transverse reinforcement. The results show that prestressed high-workability concrete beams have better structural behaviour than prestressed normal concrete beams. The diagonal cracking strengths and ultimate strengths of high-workability concrete beams were 1.20 and 1.17 times those of normal concrete beams respectively. Prestressed high-workability concrete beams have better crack control ability than prestressed normal concrete beams. With the same crack width, high-workability concrete beams can reach greater loads which are approximately 1.21 times those of normal concrete beams. In addition, prestressed high-workability concrete beams have greater stiffness than prestressed normal concrete beams.
URI: http://hdl.handle.net/11455/70626
ISSN: 0024-9831
DOI: 10.1680/macr.10.00203
Appears in Collections:期刊論文

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