Woo-tai Jung and Jong-sup Park and Jae-yoon Kang and Moon-seoung Keum
A Fundamental Study on the Anchor Performance of NonSurface Treated Multi CFRP Tendons
872 - 876
2013
7
11
International Journal of Civil and Environmental Engineering
https://publications.waset.org/pdf/17418
https://publications.waset.org/vol/83
World Academy of Science, Engineering and Technology
CFRP (Carbon Fiber Reinforced Polymer) is mainly used as reinforcing material for degraded structures owing to its advantages including its noncorrodibility, high strength and lightweight properties. Recently, dedicated studies focused not only on its simple bonding but also on its tensioning. The tension necessary for prestressing requires the anchoring of multiCFRP tendons with high capacity and the surface treatment of the CFRP tendons may also constitute an important issue according to the type of anchor. The wedge type, swage type or bonded type anchor can be used to anchor the CFRP tendon. The bonded type anchor presents the disadvantage to lengthen the length of the anchor due to the low bond strength of the CFRP tendon without surface treatment. This study intends to overcome this drawback through the application of a method enlarging the bond area at the end of the CFRP tendon. This method enlarges the bond area by splitting the end of the CFRP tendon along its length and can be applied when CFRP is produced by pultrusion. The application of this method shows that the monoCFRP tendon and 3multi CFRP tendon secured the anchor performance corresponding to the tensile performance of the CFRP tendon and that the 7multi tendon secured anchor performance corresponding to 90 of the tensile strength due to the occurrence of buckling in the steel tube anchorage.
Open Science Index 83, 2013