Experimental Investigation of Shear Strength of Solid Brick Urm Walls Retrofitted With TRM Jacket

Abstract

This study is part of an experimental program on full-scale strengthened Un-Reinforced Masonry (URM) walls with Textile reinforced mortars (TRM). Four solid brick walls (one control and three strengthened specimens with central opening), were tested under the diagonal tension (shear) test method in order to investigate the effectiveness of the strengthening system on the in-plane behavior of the walls. All the URM panels consist of solid bricks and a high strength binder mortar. Both of them have increased mechanical properties leading to improved shear behavior of the masonry walls. Several parameters pertaining to the in-plane shear behavior of the retrofitted panels were investigated, including shear capacity, failure modes, the number of layers of the external TRM jacket and the existence of the central opening of the wall. The experimental work allowed an evaluation of the shear behavior in the case of the bidirectional textile (TRM) system applied on URM walls. The experimental results of URM and retrofitted walls with different layers are compared with each other. The purpose is to investigate in depth and to draw conclusions about the in-plane shear behavior.

Novel Natural Bee Brick with a Low Energy Footprint for “Green” Masonry Walls: Mechanical Properties

“…The compression tests were performed by applying a compressive load in an ELLE press machine, with a loading rate of 0.01 mm/s (Figure 2a,b). The compressive load was applied uniaxially and monotonically [7,8]. natural NHL lime and geo-binder.…”

“…The compression tests were performed by applying a compressive load in an ELLE press machine, with a loading rate of 0.01 mm/s (Figure 2a,b). The compressive load was applied uniaxially and monotonically [7,8]. To investigate the properties of the brick interface and, in particular, the bond to the binder material proposed for use in the construction of load-bearing masonry, three triplet specimens consisting of three bee bricks and two mortar joints with a layer thickness of 10 mm were constructed and subjected to a direct shear test without lateral compression, as indicated by EN 1052-3 [11] specifications (Figure 2c).…”

“…The bee brick has cavities of various sizes inside where the bees can lay their eggs and the eggs can hatch, then seal the unique entrance with mud. It is an innovative product that can be used as a construction material in new constructions made from load-bearing masonry and in existing constructions of buildings made from load-bearing masonry [4][5][6][7][8]. In particular, the masonry unit can be built or installed as a visible plinth on the exterior of structures.…”

Hysteretic Model for RC Columns Based on Effective Hysteretic Energy Dissipation with Positive and Negative Directions

“…There are more factors affecting the value of ε c . After simulation, the proposed value of ε c is shown in Equation (11).…”

“…Capitalizing on the obtained data, they simulated the cyclic lateral behavior of carbon fiber-reinforced polymer bars as a longitudinal reinforcement in the beam using the finite element analysis software ABAQUS [10]. Regarding the simulation of other structural members, Thomoglou et al [11] implemented an intricate micro-nonlinear finite element model in ANSYS to simulate and validate the shear behavior of unreinforced masonry walls containing units, mortar, and fiber-reinforced composites with their complex interactions.…”