Effect of seawater on pull-out behavior of glued-in single rods set parallel to the grain of timber joints. (20th October 2019)

• Record Type: Journal Article
• Authors: Shekarchi, Mohammad; Farahani, Emadoddin Majdabadi; Oskouei, Asghar Vatani
• Is Part Of: Construction & building materials. Volume 222(2019)
• Page Start: 342
• Page End: 357
• Publication Date: 2019-10-20
• Subjects: GFRP bar -- Steel bar -- Glued-in rod timber joint -- Seawater -- Pull-out strength; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2019.06.140
• Languages: English
• ISSNs: 0950-0618

Abstract

Graphical abstract: Highlights: Effect of seawater on pull-out behavior of glued-in rod timber joints is evaluated. Strength degradation of joints built with steel rod is more than those with GFRP rod. Dominant failure mode due to exposure to seawater is at the adhesive/wood interface. Empirical models predicting the load-carrying capacity of joints are proposed. Abstract: This paper experimentally investigates the effects of seawater on pull-out behavior of single rods glued in timber parallel to grain. Considering different rod diameters (6, 8, 10 mm), slenderness ratios (7.5, 10, 15), rebar materials (steel and GFRP), and immersion time in seawater (0, 10, 20, 30, 60, 90 days), 324 specimens were tested. Mean strength reduction about 39 and 55 percent was observed for 90-day immersed joints constructed with GFRP and steel rebars, respectively. Rebar diameter and slenderness ratio significantly influenced ultimate loads, and dominant failure mode was at adhesive/timber interface. Finally, two novel strength models were developed empirically.