Abstract
ABSTRACT Aggregates used in civil engineering are irregular-shaped granular materials. Angularity is an important shape feature of aggregates (and for various other granular materials). Various alternative approaches are available in the literature on quantitative estimation of angularity, suggesting that there may not be any unique definition of angularity of irregular-shaped granular materials. The present paper reviews a few such measures of angularity proposed by past researchers and identifies some possible inconsistencies in these approaches. In the present work, the possible inconsistencies in such approaches are identified, and subsequently, a new automated angularity estimation approach based on corner point detection and its tangent space analysis is proposed. Some of the identified inconsistencies, such as inconsistencies with the existing corner point detection algorithms, were resolved with this proposed approach. Finally, this approach is applied to a few two-dimensional (2D) profiles of a few aggregates, and the results are presented.
Published Version
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