Gaps in Particulate Matters: Formation, Mechanisms, Implications

Book chapter


Assadi Langroudi, A. and Theron, E. 2019. Gaps in Particulate Matters: Formation, Mechanisms, Implications. in: Proceedings of the 17th African Regional Conference on Soil Mechanics and Geotechnical Engineering International Society for Soil Mechanics and Geotechnical Engineering.
AuthorsAssadi Langroudi, A. and Theron, E.
Abstract

Ageing of soil may induce an unwelcomed degree of spatial variability in soil parameters. Ageing is influenced by fatigue in soil’s frame elements (quartz constituents) and cause particle size diminution, shape alteration or crystalline damage. There are substantial literature trails on mechanisms of particle splitting, yet neither a universal quartz comminution model nor an explanation for the fractal features of size diminution exists. The universal shortage of certain size particles has received little attention and the probable links between particles’ shape and chance to survive in the terrestrial system is very improperly understood. This work seeks a better understanding of the controls on the universal particle size deficiencies, and implications on soil ageing in the near-surface environment. Four Peridesert, Perimountain, and Periglacial sands collected from Northern and Southern hemisphere are mechanically crushed into a range of grades. Particle size histograms are studied in conjunction with particle shape data within the context of three fundamental questions: Are there any uni-versal size ranges at which particles fail to survive in the natural/engineered environment? Is there a link be-tween particle size gaps and particles’ origin? Is there a link between gaps and particle shape?

Book titleProceedings of the 17th African Regional Conference on Soil Mechanics and Geotechnical Engineering
Year2019
PublisherInternational Society for Soil Mechanics and Geotechnical Engineering
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Publication process dates
Accepted02 May 2019
Deposited19 Jun 2019
Event17th African Regional Conference on Soil Mechanics and Geotechnical Engineering
Copyright holder© 2019 ISSMGE
Copyright informationAll Rights Reserved.
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