Blast Testing of Three Types of Panels with External Strengthening Systems

Abstract

This research investigated the behavior of hybrid, plain, and steel fiber-reinforced concrete panels coated with various polyurea systems under blast loading. Four coatings were assessed including two plain polyureas and two discrete fiber-reinforced polyurea systems. Chopped E-glass fibers were discretely integrated in with the polyurea to develop a fiber-reinforced polyurea system. The addition of glass fiber to a polymer coating provides improved stiffness and strength to the composite system while the polyurea base material provides ductility. Seventeen panels were tested at the Missouri University of Science and Technology's experimental mine using a charge weight of 1.36 kg of C4 at a 305 mm standoff distance. Hybrid panels demonstrated higher blast mitigation performance compared to plain and steel fiber-reinforced concrete panels. Addition of plain polyurea or discrete fiber-reinforced polyurea system on the tension side improved panel performance by containing fragmentation during a blast event. Discrete fiber-reinforced polyurea systems exhibited less bulging compared to the plain polyureas due to higher stiffness. © The Society for Experimental Mechanics, Inc. 2013.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Blast mitigation; Blast testing; Composite strengthening; Discrete fiber-reinforced polyurea; Hybrid panel systems; Steel fiber-reinforced concrete

International Standard Book Number (ISBN)

978-146144237-0

International Standard Serial Number (ISSN)

2191-5652; 2191-5644

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Springer, All rights reserved.

Publication Date

01 Jan 2013

Link to Full Text

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