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Advances in Materials Science and Engineering
Volume 2013, Article ID 391957, 8 pages
http://dx.doi.org/10.1155/2013/391957
Research Article

Impact Behavior of Recycled Aggregate Concrete Based on Split Hopkinson Pressure Bar Tests

1Key Laboratory of Testing Technology for Manufacturing Process (Ministry of Education), Southwest University of Science and Technology, Mianyang 621010, China
2School of Manufacturing Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China

Received 7 November 2012; Revised 12 February 2013; Accepted 12 February 2013

Academic Editor: Alex Li

Copyright © 2013 Yubin Lu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents the experimental results of recycled aggregate concrete (RAC) specimens prepared with five different amounts of recycled coarse aggregate (RCA) (i.e., 0, 25%, 50%, 75%, and 100%) subjected to impact loading based on split Hopkinson pressure bar tests. Strain-rate effects on dynamic compressive strength and critical strain of RAC were studied. Results show that the impact properties of RAC exhibit strong strain-rate dependency and increase approximately linearly with strain-rate. The transition point from low strain-rate sensitivity to high sensitivity decreases with the increase of matrix strength.