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Flexural response of reinforced concrete beams strengthened with end-anchored partially bonded carbon fiber-reinforced polymer strips
The current study is a step forward in the investigation of the effect of end-anchorage of partially bonded CFRP (carbon fiber-reinforced polymer) strips on the flexural behavior and mode of failure of RC (reinforced concrete) beams. The anchor consisted of top and bottom 10 mm-thick steel plates fastened together using two M12 tight bolts. The major conclusions derived from this study are given as follows: Externally bonded CFRP strips significantly enhanced the ultimate capacity of reinforced concrete beams while reducing the ductility. Beams strengthened with end-anchored partially bonded CFRP strips gave higher enhancement than the fully bonded beam with no end-anchorage. The importance of end-anchorage is highlighted, because it enables the CFRP unbonded length to act as a tension member and thus improves the flexural performance of the beam at ultimate. The observed mode of failure in the CFRP strengthened beams was of the flexural shear crack-induced interfacial debonding type.
Flexural response of reinforced concrete beams strengthened with end-anchored partially bonded carbon fiber-reinforced polymer strips
The current study is a step forward in the investigation of the effect of end-anchorage of partially bonded CFRP (carbon fiber-reinforced polymer) strips on the flexural behavior and mode of failure of RC (reinforced concrete) beams. The anchor consisted of top and bottom 10 mm-thick steel plates fastened together using two M12 tight bolts. The major conclusions derived from this study are given as follows: Externally bonded CFRP strips significantly enhanced the ultimate capacity of reinforced concrete beams while reducing the ductility. Beams strengthened with end-anchored partially bonded CFRP strips gave higher enhancement than the fully bonded beam with no end-anchorage. The importance of end-anchorage is highlighted, because it enables the CFRP unbonded length to act as a tension member and thus improves the flexural performance of the beam at ultimate. The observed mode of failure in the CFRP strengthened beams was of the flexural shear crack-induced interfacial debonding type.
Flexural response of reinforced concrete beams strengthened with end-anchored partially bonded carbon fiber-reinforced polymer strips
Biegeverhalten von mit endverankerten, teilweise angeklebten, carbonfaserverstärkten Kunststoffbändern verstärkten Stahlbetonträgern
Chahrour, Ali (author) / Soudki, Khaled (author)
Journal of Composites for Construction ; 9 ; 170-177
2005
8 Seiten, 13 Bilder, 2 Tabellen, 26 Quellen
Article (Journal)
English
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