Strengthening of Un-Reinforced Brick Masonry Walls Using Epoxy Mortar

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-12-01 DOI:10.2478/jaes-2021-0013

R. Hameed, S. mahmood, M. R. Riaz, S. A. Gillani, M. Tahir

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Abstract

Abstract This study is carried out to investigate the effectiveness of using externally applied epoxy mortar on joints of masonry wall panels to enhance their load carrying capacity under axial compressive and lateral loads. A total of six 113 mm thick masonry wall panels of size 1200 x 1200 mm were constructed for this study. Four out of six walls were strengthened using locally available CHEMDUR-31 epoxy mortar on joints. The remaining two walls were tested as control specimens. The control and strengthened wall panels were tested under axial compression and lateral loads. In axial compression test, out of plane central deflection and vertical strain at the center of wall panel were recorded while in lateral load test, in-plane lateral displacement of wall and horizontal strain at the center were recorded at each load increment. Failure pattern of each wall panel is also studied to notice its structural behavior. The results of this experimental study showed an increase of 45% and 60% in load carrying capacity under axial compression and lateral bending, respectively by the use of strengthening technique employed in this study.

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环氧砂浆加固非配筋砖砌体墙

摘要本研究旨在探讨外墙环氧砂浆在砌体墙板接缝处施加轴压和侧向荷载对其承载力的提高效果。本次研究共建造了6块113毫米厚的砖石墙板，尺寸为1200 x 1200毫米。六面墙中的四面墙在接缝处使用当地可用的chemdur31环氧砂浆进行加固。其余两面墙作为对照试件进行试验。对控制墙板和加固墙板进行了轴压和侧压试验。在轴压试验中，记录墙板的面外中心挠度和中心垂直应变;在侧载试验中，记录每个荷载增量时墙板的面内侧向位移和中心水平应变。还研究了各壁板的破坏模式，以了解其结构特性。试验研究结果表明，采用本研究所采用的加固技术，在轴压和侧弯下的承载能力分别提高了45%和60%。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.