Impact Resistance of Concrete

A technical basis is being developed for selecting materials which can be used in constructing security barriers with improved penetration resistance. The first phase of the work is concerned with developing rational performance tests for evaluating the impact resistance of concrete. Three impact te...

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Main Authors: Clifton,J. R, Knab,L. I
Format: Report
Language:English
Subjects:
Area security
Barriers
Component Reports
Concrete
Cracking(Fracturing)
Impact resistance
Impact strength
Impact tests
Performance(Engineering)
Reinforced concrete
Steel
Symposia
Test and evaluation
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creator Clifton,J. R
Knab,L. I
description A technical basis is being developed for selecting materials which can be used in constructing security barriers with improved penetration resistance. The first phase of the work is concerned with developing rational performance tests for evaluating the impact resistance of concrete. Three impact tests are currently being developed to determine the resistance of concrete to single impact, repeated impact, and to small arms and small projectiles. After the performance tests are developed, performance criteria will be proposed. Preliminary results from repeated impact tests indicate that steel fibers can substantially increase the impact resistance of concrete as compared to expanded metal and conventional steel bar reinforcing. Ultrasonic pulse velocity measurements appear to be useful in assessing the crack damage occurring during the repeated impact test. This article is from 'Proceedings of the Symposium on the Role of Behavioral Science in Physical Security (5th Annual) Held at Gaithersburg, Maryland, June 11-12, 1980', AD-A138 882, p49-56.
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The first phase of the work is concerned with developing rational performance tests for evaluating the impact resistance of concrete. Three impact tests are currently being developed to determine the resistance of concrete to single impact, repeated impact, and to small arms and small projectiles. After the performance tests are developed, performance criteria will be proposed. Preliminary results from repeated impact tests indicate that steel fibers can substantially increase the impact resistance of concrete as compared to expanded metal and conventional steel bar reinforcing. Ultrasonic pulse velocity measurements appear to be useful in assessing the crack damage occurring during the repeated impact test. 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Ultrasonic pulse velocity measurements appear to be useful in assessing the crack damage occurring during the repeated impact test. 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source DTIC Technical Reports
subjects Area security
Barriers
Component Reports
Concrete
Cracking(Fracturing)
Impact resistance
Impact strength
Impact tests
Performance(Engineering)
Reinforced concrete
Steel
Symposia
Test and evaluation
title Impact Resistance of Concrete
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