A Framework for Unifying Soil Fabric, Suction, Void Ratio, and Water Content during the Dehydration Process

In the process of soil dehydration, the soil fabric, water content, and void ratio vary with soil suction. They all can be regarded as variables depending on soil suction and soil history. At a particular state, the soil fabric, which can be characterized by a pore size distribution, inherently dete...

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Bibliographic Details
Published inSoil Science Society of America journal Vol. 78; no. 2; pp. 387 - 399
Main Authors Li, Xu, Zhang, Li-Min, Wu, Li-Zhou
Format Journal Article
LanguageEnglish
Published Madison The Soil Science Society of America, Inc 01.03.2014
American Society of Agronomy
Subjects
Dehydration
Drying
Fabrics
Herbivores
Moisture content
Porosity
Sand
Sand & gravel
Scanning electron microscopy
Shear strength
Shrinkage
Soil (material)
Soil sciences
Void ratio
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Summary:In the process of soil dehydration, the soil fabric, water content, and void ratio vary with soil suction. They all can be regarded as variables depending on soil suction and soil history. At a particular state, the soil fabric, which can be characterized by a pore size distribution, inherently determines the water content and the void ratio. In this study, the monotonic drying process of soil was analyzed under an integrated framework of soil fabric, suction, void ratio, and water content. Under this framework, the drying process of slurry samples and overconsolidated samples were distinguished and investigated separately, including their drying mechanisms and the variations of soil fabric, soil shrinkage curve, and soil water characteristic curve. From the theoretical analysis, in a monotonic drying process, the envelope of the cumulative pore volume curves was found to be the soil‐water characteristic curve and the shrinkage curve was found to be located in a narrow range that can be determined using the cumulative pore volume curve. These findings were further verified by the laboratory test data on a clay with sand.
Bibliography:All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permission for printing and for reprinting the material contained herein has been obtained by the publisher.
ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0361-5995
1435-0661
DOI:10.2136/sssaj2013.08.0362