Impact Response of Plates Under Drop Weight Impact Testing
Concrete structures are often subjected to long term static and short term dynamic loads. Due to a relatively low tensile strength and energy dissipating characteristics, the impact resistance of concrete is poor. Research work carried out so far towards the development of concrete that exhibits improved impact resistance than conventional concrete showed that the steel fibre reinforced concrete has a good potential as a viable structural material for such applications. The overall objective of the study is to investigate the dynamic behaviour of steel fibre reinforced concrete plates under impact loading with respect to displacement, velocity and acceleration. In the drop weight test, eighteen plate specimens were tested with three different thicknesses of 20,25 and 30mm and with three different steel fibre contents of 0.5,0.75 and 1%.The edges of the plates were fixed on all sides. Displacement versus time, velocity versus time and acceleration versus time behaviour for all the plates tested were studied. It was found that when the aspect ratio of fibres is 50 and 75 there is a marginal increase in energy absorption for change in fibre content from 0.5 to 0.75%. There is a steep increase in energy absorption for a steel fibre content of 1% when the aspect ratio of fibre is 100.
Daffodil International University Journal of Science and Technology Vol.7(1) 2012 1-11
Copyright and Reprint Permissions
This journal and the individual contributions contained in it are protected by the copyright of Daffodil International University. Photocopies of this journal in full or parts for personal or classroom usage may be allowed provided that copies are not made or distributed for profit or commercial advantage and the copies bear this notice and the full citation. Copyright for components of this work owned by others than Daffodil International University must be honored. Abstracting with credit is permitted. Specific permission of the publisher and payment of a fee are required for multiple or systemic copying, copying for advertising or promotional purposes, resale, republishing, posting on servers, redistributing to lists and all forms of document delivery.
Subscribers may reproduce table of contents or prepare lists of articles including abstracts for internal circulation within their institutions. Permission of the publisher is required for resale and distribution outside the institution. Permission of the publisher is required for all other derivative works, including compilations and translations. Except as outlined above, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the publisher.
Permissions may be sought directly from Daffodil International University; email: email@example.com.