Title: Explosion load induced response of structural concrete columns under contact and close-range detonations: a state-of-the-art review

Authors: S.M. Anas; Mehtab Alam; Shahbaz Akram; Rafat Tahzeeb; Mohd Shariq; Mohammad Umair

Addresses: Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia (A Central University), New Delhi, 110025, India ' Department of Civil Engineering, Netaji Subhas University of Technology (West Campus), New Delhi, 110073, India ' Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia (A Central University), New Delhi, 110025, India ' Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia (A Central University), New Delhi, 110025, India ' Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia (A Central University), New Delhi, 110025, India ' Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia (A Central University), New Delhi, 110025, India

Abstract: Reflected shock wave causes severer damage in the form of spallation, crushing, and cratering of structural concrete components under contact explosions than close-range explosions. In this study, the state of research on the performance of the columns under close-in and contact explosions is presented. The Beirut-explosion (August-2020) was an accidental event of highest immenseness the world ever witnessed. Two of the five Beirut hospitals were severely damaged by the shock waves and the masonry walls as far as 2 km from the explosion site were smashed to the ground. On the Beirut-explosion, a brief case study of post-explosion damage scenario is presented highlighting the vulnerability of structures in the vicinity of explosive stores and ammunition depots. Observed damages to columns subjected to explosive loadings are due to failure in the form of flexure-shear, flexural, rupture of steel bars, scabbing and spalling of concrete. Lastly, certain considerations for future studies are proposed.

Keywords: blast loads; Beirut explosion; carbon fibres; damages; failure modes; RC columns; strengthening techniques; structures; testing methods.

DOI: 10.1504/IJSMSS.2022.131244

International Journal of Sustainable Materials and Structural Systems, 2022 Vol.6 No.1, pp.61 - 108

Received: 02 Feb 2023
Accepted: 13 Mar 2023
Published online: 01 Jun 2023 *

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