Title: Dowel Bar Contribution to Bond Deterioration under Cyclic Loading

Author(s): Edom A. Zewdie, Chikako Fujiyama, Koichi Maekawa

Publication: Structural Journal

Volume:

Issue:

Appears on pages(s):

Keywords: bond deterioration; crack; cyclic shear; dowel; joint interface; premature failure; splitting failure

DOI: 10.14359/51740858

Date: 6/3/2024

Abstract:
This research delves into the performance of dowels in reinforced concrete joints, highlighting the crucial role of subgrade reaction in providing firm support for dowel bars. The experimental analysis conducted on jointed specimens loaded below their dowel capacity revealed permanent deformations. The examination discerned a gradual extension of cracks emanating from the joint interface, attributing their initiation to bond deterioration under cyclic loading conditions. This research encompasses diverse variables, including dowel arrangements, bar sizes, types, confinement levels bond conditions, and section size, offering a comprehensive exploration of factors influencing this different joint behavior.