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Author Lindly, Jayen_US
Available date 2009-11-25T13:03:29Zen_US
Publication Date 1995en_US
Publication Name Engineering Journal of Qatar University
Citation Engineering Journal of Qatar University, 1995, Vol. 8, Pages 127-138.en_US
URI http://hdl.handle.net/10576/7837en_US
Abstract The American Association of State Highway and Transportation Officials (AASHTO) uses resilient modulus values as the load-carrying capacity parameter for all pavement materials. However, the maximum sample diameter in standard resilient modulus test specifications is only 150 mm (6 inches). With that limitation, large-sized aggregates can not be tested at their full gradation because if top-size-to-sample diameter ratios exceed 1:5, arching effects occur during sample preparation which adversely affect the results. Thus, little work has been performed on the resilient modulus of large top sized aggregates. In this study, 305 mm (12 inch) diameter samples of two different aggregates were tested for resilient modulus. The materials were tested at top sizes of 63 mm (2.5 inches), 38 mm (1.5 inches), and 19 mm (0.75 inches). Results indicate that the tests bec~me less repeatable as top size increases, and that resilient modulus does not increase as top size increases. The second result is contrary to the conventional belief that load carrying capacity of aggregates increases with increasing top size.en_US
Language enen_US
Publisher Qatar Universityen_US
Subject Engineering: Research & Technologyen_US
Title How Top-Size Affects The Resilient Modulus Of Roadway Base Materialsen_US
Type Articleen_US
Pagination 127-138en_US
Volume Number 8en_US


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