Retrofit for Blast-Resistant RC Slabs with Composite Materials

Abstract

This research program was initiated to examine the feasibility of assessing the blast-resistant capacity of reinforced concrete (RC) slabs using the displacement based design (DBD) method. In order to achieve this objective, five RC slabs were tested under real blast loads in the out-of-plane direction. One of the slabs was used as the control unit to establish a baseline for comparison in terms of performance for the other four slabs, which were strengthened with fiber reinforced polymer (FRP) and steel fiber reinforced polymer (SRP). The explosive charge weight and stand-offdistance required to impose a given damage level were predicted by the DBD method.Test results showed that the blast loads were effectively estimated and the damage levels observed from the field tests correlated well with the predicted levels. In addition, test results corroborated that the blast-resistant capacity of RC slabs can be effectively increased by strengthening using FRP composites. The main conclusion that can be drawn from these tests using improvised explosive devices (IDE) is that RC slabs retrofitted on both sides have a higher blast resistance capacity than those slabs retrofitted only on one side. This paper discusses these experimental results along with the analysis steps used to predict the blast charge and standoff distance to impose a given damage level.

Meeting Name

7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures

Department(s)

Civil, Architectural and Environmental Engineering

Second Department

Mining Engineering

Keywords and Phrases

Blast-Resistant; Displacement-Based Method; Fiber Reinforced Polymers; Steel-Reinforced Polymers; Ductility

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 American Concrete Institute (ACI), All rights reserved.

Publication Date

01 Jan 2005

Link to Full Text

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