Performance prediction of braced unreinforced and strengthened clay brick masonry walls under close-range explosion through numerical modelling
by S.M. Anas; Mehtab Alam; Mohammad Umair
International Journal of Computational Materials Science and Surface Engineering (IJCMSSE), Vol. 11, No. 2, 2022

Abstract: Experimentally tested an unreinforced braced clay brick masonry wall by Badshah et al. (2021) under 4.34 kg and 7.49 kg-TNT explosion loads at scaled distances respectively 2.19 m/kg^1/3 and 1.83 m/kg^1/3 is micro modelled in ABAQUS/Explicit code and analysed considering concrete damage plasticity (CDP) model with loading rate effects. Wall performance obtained from the analysis is found closely matching with the experimental results. Efforts are made to strengthen the wall following: 1) C-FRP wrapping; and 2) mesh of steel strip with angle sections at the edges of the wall. The load carried and its mechanism by unreinforced and strengthened walls are highlighted. Damage to the wall strengthened with 2 mm thick CFRP wrapping on both the faces is found comparable with the wall strengthened with strips and angles of thickness 5 mm under blast loading. From the ease of application point of view, strengthening the wall with wrapping is better than with the steel strip-angle technique.

Online publication date: Thu, 22-Dec-2022

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