Journal Published Online: 20 August 2018
Volume 47, Issue 6

Effect of Test Geometry and Aggregate Texture on Angle of Repose of Aggregates

CODEN: JTEVAB

Abstract

Properties of asphalt concrete mixtures are significantly affected by aggregate properties. Previous studies have indicated that Angle of Repose (AoR) is an indicator of aggregate properties, including texture, angularity, and shape. In this research, the effect of test geometry and aggregate texture on the AoR of aggregate is evaluated. Aggregates from two different sources were synthetically processed in a laboratory to obtain particles with different textures while retaining other characteristics. The AoR of single-sized aggregates was measured with different test geometries. The test results indicate that measured AoR was sensitive to aggregate texture and test geometry. The relation between aggregate size and AoR exhibited a positive correlation. The direct shear strength test parameters were able to capture the changes in aggregate texture and AoR. The angle of internal friction showed a positive and linear variation with AoR, irrespective of test geometry. However, exact slope was specific to aggregate type and texture level.

Author Information

Swamy, Aravind Krishna
Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
Matolia, Varun
Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
Singh, Parminder
Department of Civil Engineering, National Institute of Technology, Kurukshetra, Haryana, India
Ramana, Gunturi Venkata
Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
Pages: 13
Price: $25.00
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Details
Stock #: JTE20170460
ISSN: 0090-3973
DOI: 10.1520/JTE20170460