Impact Resistance of Blast Mitigation Material using Modified Aci Drop-weight Impact Test

Abstract

This experimental program was conducted to evaluate the effectiveness of a high-volume fly ash-wood fiber material at resisting repeated low-velocity drop-weight impact. A modified version of the ACI drop-weight test proposed by ACI Committee 544 was conducted on seven groups of specimens. Each group was unique, consisting of various quantities of materials, including cement, fly ash, and wood fibers. Testing procedures for the drop-weight test were consistent with test procedures listed in a previous research study on drop-weight impact testing of polypropylene fiber-reinforced concrete. However, a few modifications were made to the previous test setup to better accommodate this study. These modifications are discussed herein. Test results revealed that the fly ash-wood fiber specimens have significant resistance to drop-weight impact as compared to unreinforced concrete specimens. Although results show that polypropylene fiber-reinforced concrete has the highest drop-weight impact resistance, the fly ash-wood fiber material is a likely candidate for use in a barrier system due to its low stiffness and ductile failure mode. Impact test results also coincided with results from previous drop-weight impact tests. © 2013, American Concrete Institute.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

ACI drop test; Blast mitigation material; High-volume fly ash; Impact resistance; Wood fiber

International Standard Serial Number (ISSN)

0889-325X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Concrete Institute, All rights reserved.

Publication Date

01 May 2013

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