Voids distribution of pavement filters subjected to permeating fines: a coupled DEM-statistical inference

Sandun M. Dassanayake, Ahmad Mousa, Daniel Kong

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

2 Citations (Scopus)

Abstract

Granular soils in pavement systems, insidiously experience fines migration during their expected lifespan. Experimental monitoring of particles movement in a granular matrix is extremely challenging due to its concealed nature. Numerically modelling the permeation process demands a high computational power and requires additional conditions, which are frequently difficult to be obtained. This paper proposes an integrated numerical approach to estimate the conditional probability of observing a given voids ratio of a filter subjected to different fractions of permeating fines. The discrete element method (DEM) has been used for developing numerical samples of random voxels to estimate the void ratio distribution of the fines-free filter (i.e. virgin filter). Qualitative results obtained from a pilot scale experimental program have been presented to validate the hypotheses on which the novel methodology has been developed. The results further show that the distribution of the voids ratio in the filters subjected to permeating fines follow a gamma distribution, with a 0.9 probability of observing a voids ratio lower than the average value in the virgin filter.

Original languageEnglish
Title of host publication4th International Conference on Civil Engineering and Materials Science (ICCEMS 2019) 17–19 May 2019, Bangkok, Thailand
PublisherIOP Publishing
Volume652
Edition1
DOIs
Publication statusPublished - 2019
EventInternational Conference on Civil Engineering and Materials Science 2019 - Bangkok, Thailand
Duration: 17 May 201919 May 2019
Conference number: 4th
https://iopscience.iop.org/issue/1757-899X/652/1 (Proceedings)

Publication series

NameIOP Conference Series: Materials Science and Engineering
PublisherIOP Publishing
ISSN (Print)1757-8981

Conference

ConferenceInternational Conference on Civil Engineering and Materials Science 2019
Abbreviated titleICCEMS 2019
Country/TerritoryThailand
CityBangkok
Period17/05/1919/05/19
Internet address

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