Experimental Study on Seismic Behavior of Masonry Walls Retrofitted Using Epoxy Resin Injection

2011 ◽  
Vol 94-96 ◽  
pp. 1373-1377 ◽  
Author(s):  
Chang Ming Bu ◽  
Ying Min Li ◽  
Oday Asal Salih
Keyword(s):  
Experimental Study ◽  
Epoxy Resin ◽  
Seismic Behavior ◽  
Human Life ◽  
Primary Objective ◽  
Experimental Program ◽  
Injection Technique ◽  
Masonry Walls ◽  
Initial Stiffness ◽  
Resin Injection

2008 Wenchuan earthquake has showed that failure of masonry walls is one of the major causes of material damage and loss of human life due to seismic events. Therefore, study of masonry walls seismic behavior and development of effective and practical retrofitting schemes is an urgent need. So this work presents an experimental program that investigates in-plane seismic behavior of common types of shale masonry walls before and after retrofitting using epoxy resin injection technique. In this experimental study, the primary objective was to evaluate the efficiency of this retrofitting method on masonry walls. The results of this study shows that using epoxy resin injection technique increased the in-plane maximum strength, the ductility, the initial stiffness value, the stiffness, and the energy dissipated during all the loading stages, and decreased the ductility factor.

Strength of Masonry Walls Retrofitted with Epoxy Resin Injection

2011 ◽  
Vol 82 ◽  
pp. 545-550 ◽  
Author(s):  
Hideo Araki ◽  
Akira Yasojima ◽  
Junichi Kagawa
Keyword(s):  
Flexural Strength ◽  
Epoxy Resin ◽  
Seismic Loading ◽  
Masonry Walls ◽  
Brick Wall ◽  
Test Results ◽  
Injection Method ◽  
Resin Injection ◽  
Loading Tests ◽  
Strengthening Method

This paper presents the results of the fundamental loading tests with brick elements strengthened by the epoxy resin injection method. Three types of loading tests were performed to evaluate the effects of epoxy resin injection on compressive, shear, and flexural characteristics. The variables considered in this experiment were the strength of the mortar and the applied axial force. To verify the effects of this strengthening method, seismic loading tests were performed on three brick walls. From the test results, an increase in the strength of the element was observed in each test. However, the strength of the mortar did not affect the shear and flexural strength of the brick elements. We proposed equations to estimate the strength of the elements strengthened by the epoxy resin injection method. Improvements to the seismic performance of the brick wall strengthened with epoxy resin were explicitly confirmed.

Experimental Study on Seismic Failure Modes of Confined Masonry Structures with Different Enhancements

2017 ◽  
Vol 747 ◽  
pp. 594-603 ◽  
Author(s):  
Hu Xu ◽  
Hao Wu ◽  
Cristina Gentilini ◽  
Qi Wang Su ◽  
Shi Chun Zhao
Keyword(s):  
Experimental Study ◽  
Failure Mode ◽  
Seismic Behavior ◽  
Failure Modes ◽  
Experimental Results ◽  
Masonry Walls ◽  
Masonry Structures ◽  
Structural Collapse ◽  
Static Loads ◽  
Confined Masonry

In this study, confined masonry specimens with regular arranged openings are tested in order to study the influence of different enhancements of the columns on seismic failure modes. In particular, five brick masonry walls and three half-scale two-storey masonry structures are tested under quasi-static loads. The experimental results show that increasing column ratio improves the seismic behavior of the wall specimens to some extent, but an excessive reinforcement ratio of the columns decreases the ductility. The global failure mode of the two-storey masonry structures is modified by inserting iron wires in the mortar bed joints, improving the structural collapse resistant capacity effectively.

Experimental study on the seismic behavior of masonry walls under offshore environment

Structures ◽  
2020 ◽  
Vol 28 ◽  
pp. 433-445 ◽  
Author(s):  
LiHua Niu ◽  
ShanSuo Zheng ◽  
Lei Li
Keyword(s):  
Experimental Study ◽  
Seismic Behavior ◽  
Masonry Walls

Behavior of High-Strength Concrete-Filled FRP Tube Columns under Simulated Seismic Loading: An Experimental Study

2013 ◽  
Vol 743 ◽  
pp. 39-44
Author(s):  
Yunita Idris ◽  
Togay Ozbakkloglu
Keyword(s):  
Experimental Study ◽  
High Strength Concrete ◽  
Axial Load ◽  
Seismic Behavior ◽  
High Strength ◽  
Seismic Loading ◽  
Load Level ◽  
Experimental Program ◽  
Strength Concrete ◽  
Frp Tube

This paper reports on part of an ongoing experimental program at The University of Adelaide on the seismic behavior of high-strength concrete (HSC)-filled fiber reinforced polymer (FRP) tubes (HSCFFTs). The results from three square concrete-filled FRP tube (CFFT) columns that were tested under combined constant axial compression and reversed-cyclic lateral loading are presented. The main parameters of the experimental study included the axial load level, concrete strength, and FRP tube corner radius. The results indicate that square HSCFFT columns are capable of developing very high inelastic deformation capacities under simulated seismic loading. The results also indicate that increasing the corner radius beyond a certain threshold value provides no increase in column lateral drift capacities. It was observed that column deformability decreased with an increase in axial load level (P/Po) and concrete compressive strength (fc). The results of the experimental program are presented together with a discussion on the influence of the main parameters on the seismic behavior of CFFT columns.

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