Cyclic Loading Test of RC Bridge Pier Model Using Continuous Fiber Sheet with Large Fracturing Strain

Hadiyono Jaqin, Jian-Guo Dai, Tamon Ueda

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper presents the experimental findings of cyclic loading test of half model reinforced concrete bridge pier which were retrofitted by external wrapping using continuous fiber sheet with large fracturing strain, such as aramid (Technora), PEN (Polyethylene Naphthalate), and PET (Polyethylene Terephthalate) materials. There are three half model of RC pier specimens, which will be retrofitted with various high fracturing strain fiber materials by external wrapping, were tested under static axial (1MPa) and reversed horizontal load. The key mechanical properties of these materials are low tensile modulus of elasticity (E) and high fracturing strain at ultimate load. From the experiment, it can be concluded that all of the retrofitted specimens show ductile behavior and have more than 10 δy as ultimate deformation. There is breakage of fiber at specimen retrofitted with aramid fiber at ultimate deformation, that is 12 δy. On the other hand, there is a stable shear resisting mechanism until final stage of loading for specimen retrofitted with PEN and PET fibers. Reasons are that there is no fracturing and no yielding respectively so that there is excellent confinement at plastic hinge region. The failure mechanism is for all of retrofitted specimens reach flexural capacity then followed by buckling of flexural reinforcement. Comparing with un-retrofitted specimen, there is less likely increasing of ultimate load while there is a significant ductility enhancement for retrofitted specimen.
Original languageEnglish
Title of host publicationProceedings of the First International Conference of Asian Concrete Federation
PublisherAsian Concrete Federation
Pages94-101
Number of pages8
Volume2
ISBN (Print)974-92583-7-1
Publication statusPublished - 2004
Externally publishedYes
EventThe First International Conference of Asian Concrete Federation - Chiangmai, Thailand
Duration: 28 Oct 200429 Oct 2004

Conference

ConferenceThe First International Conference of Asian Concrete Federation
Country/TerritoryThailand
CityChiangmai
Period28/10/0429/10/04

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