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Earthquakes and Structures Volume 25, Number 3, September 2023 , pages 149-160 DOI: https://doi.org/10.12989/eas.2023.25.3.149 |
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Shear performance of AAC masonry triplets strengthened by reinforcing steel wire mesh in the bed and bed-head joint |
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Richard Badonbok Lyngkhoi, Teiborlang Warjri and Comingstarful Marthong
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| Abstract | ||
| Over the course of the last 4-5 years, India's northeastern region have widely used Autoclaved Aerated Concrete (AAC) blocks to construct load-bearing masonry structures. The aim of this investigation is to examine the shear characteristics of AAC masonry triplet assemblage strengthened by using two techniques, i.e., the bead joint (BJ) and the bed-head joint (BHJ) technique. Three unique variations of wire mesh were involved in the strengthening method. Furthermore, three strengthening configurations were used to strengthen each of the three wire mesh variations and the two-strengthening method, i.e. (-), L and (Z) configuration. The unreinforced and reinforced triplet masonry wallets were tested under direct shear test. From the results obtained, the 'BJ' triplet masonry wallets observed an enhanced in shear strength of about 2.23% to 23.33 % whereas the 'BHJ' triplet masonry wallets observed an enhanced in shear strength of about 22.92% to 50.69%. The "BHJ" strengthening method effectively enhance the shear strength of the triplet masonry wallets compared to the "BJ" and the "UR" wallets with an increase in capacity as the wire mesh strength increases. Furthermore, in terms of the strengthening configuration, the (Z) configuration performs better, followed by the (L) and (-) configuration demonstrating the strengthening configuration effectiveness. | ||
| Key Words | ||
| AAC blocks; bed-head joint; bed joint; masonry walls; steel wire mesh; strengthening; triplet test | ||
| Address | ||
| Department of Civil Engineering, National Institute of Technology Meghalaya, Shillong 793003, India | ||