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Advances in Materials Science and Engineering
Volume 2012, Article ID 263243, 8 pages
http://dx.doi.org/10.1155/2012/263243
Research Article

The Effect of Recycled Glass Powder and Reject Fly Ash on the Mechanical Properties of Fibre-Reinforced Ultrahigh Performance Concrete

1Department of Civil and Structure Engineering, The Hong Kong Polytechnic University, Hong Kong
2Guangdong Durability Center for Civil Engineering, College of Civil Engineering, ShenZhen University, Guangdong, China

Received 24 December 2011; Accepted 8 February 2012

Academic Editor: Nai-Qian Feng

Copyright © 2012 Shi Cong Kou and Feng Xing. 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 an experimental study for the purpose of reducing the cost of producing ultrahigh performance fibre-reinforced concrete (UHPFRC). Reject fly ash (r-FA) and recycled glass powder (GP) were examined as replacement materials for the silica sand and cement used to prepare UHPFRC, respectively. In addition, curing UHPFRC specimens at 2 5 C and 9 0 C was investigated to determine differences in mechanical properties. The results showed that using r-FA and GP reduces the flowability of fresh UHPFRC. The use of GP increased the mechanical properties of the UHPFRC. Moreover, the test results indicate a significant improvement in the mechanical properties of plain concrete by the inclusion of r-FA as partial replacement of fine aggregate (sand) and can be effectively used in UHPFRC. Furthermore, specimens cured at 2 5 C give lower compressive strength, flexural strength, and fracture energy than specimens cured at 9 0 C .