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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Analysis of Long-Term Effects in Concrete Columns Prestressed with FRP Tendons
Author(s): C.C. Choo, I.E. Harik, and H. Gesund
Publication: Special Publication
Appears on pages(s): 21-36
Keywords: concrete columns; FRP tendons; long term loads; non-slender; prestressing; tensile rupture; ultimate load
Abstract:An analytical investigation was conducted to study the long term effects in the strength interaction (Pn-Mn) behavior of non-slender concrete columns prestressed with fiber reinforced polymer (FRP) tendons. Two long term concrete stress-strain behaviors were used and compared to the instantaneous or short term load. The expressions for the strength interaction of FRP prestressed concrete columns are derived from the strain compatibility and equilibrium conditions and are presented herein. Based on this preliminary investigation, it was concluded that the long term loadings and the tensile creep rupture of FRP tendons considerably influence the column strength. The results of the column cross sections considered herein show that disregarding long term effects may be conservative provided that rupture of FRP tendons does not occur in the columns.
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