Effect of Rod Diameter and Adhesive Thickness to the Pull-out Strength of Threaded Steel Rod Glued in Laminated Bamboo

Abstract

Abstract The purpose of this study was to determine the effect of threaded steel rod diameter and adhesive thickness on pull-out strength, shear strength, slip modulus, and damage patterns of glued-in rod embedded in laminated bamboo. The shape of the specimen is a cube with the dimensions of 100mm × 100mm × 100mm made of laminated Asian Bamboo (Dendrocalamus asper). The threaded steel rod diameter consists of three sizes, namely 8mm, 10mm, and 12mm. Each threaded steel rod is embedded in laminated bamboo to a 40mm length. The epoxy brand Sikadur 372 is used as an adhesive between laminated bamboo and threaded steel rods with three variations of adhesive thickness, namely 2mm, 3mm, and 4mm. Each variation of the test object was repeated five times. The results showed that the rod diameter and adhesive thickness affect the pull-out strength, shear strength, and slip modulus.