Porosity of bimodal and trimodal sediment mixtures

作     者：Chamil Perera Weiming Wu Ian Knack Chamil Perera;Weiming Wu;Ian Knack

作者机构：Department of Civil and Environmental Engineering Clarkson University 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2022年第37卷第2期

页      面：258-271页

核心收录：

学科分类：0709[理学-地质学] 081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：Porosity Particle filling Particle packing Bimodal mixture Trimodal mixture 

摘      要：This study focuses on the prediction of the porosity of nonuniform sediment mixtures,considering the effects of particle packing.A random particle packing model has been developed for the porosity of bimodal mixtures by extending the existing random particle filling *** in the developed model are calibrated by fitting the model to measured data for a variety of bimodal mixtures,including spherical glass particles,rounded quarry grains,and natural *** model coefficients are found to be functions of the diameter ratio of coarse and fine particles,separately for spherical glass particles and natural sediments due to differences in particle *** bimodal mixture model is then extended to trimodal particle mixtures in three approaches:two based on serial packing and one based on random *** models are tested against experimental data of six trimodal mixtures with spherical glass *** results show that the random packing model and the fine-medium-coarse particle serial packing model predict well the observed trimodal mixture porosities.