Determination of Water Retention and Unsaturated Hydraulic Conductivity of Brahmaputra Sand

Determination of Water Retention and Unsaturated Hydraulic Conductivity of Brahmaputra Sand Unsaturated soils with hydraulic properties such as water retention and hydraulic conductivity are considered to be the most crucial parameters for modeling flow process in unsaturated soils. Experimental determination of unsaturated hydraulic conductivity (k ) is a challenging task and it requires a costly and skilled experimentation. Therefore, the normal u practice is to estimate k from water retention characteristics. Water Retention Characteristic (designated as WRC) u includes the development of a graphical relationship between suction and water content (gravimetric or volumetric). This indicates that the accuracy of k is very much dependent on the unambiguous determination of WRC. In this study, a u tensiometer and volumetric water content probe have been used to measure soil suction and volumetric water content, respectively of a local sand by using two different measurement procedures. The k of the soil has been estimated based u on the WRC obtained. The main purpose of this investigation is to understand the extent of influence of different WRC measurement procedures on k estimation. The study indicates that the measurement procedures have moderate u influence on uniqueness of WRC of Brahmaputra sand and hence the estimated k. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal on Civil Engineering i-manager Publications

Determination of Water Retention and Unsaturated Hydraulic Conductivity of Brahmaputra Sand

Loading next page...
 
/lp/i-manager-publications/determination-of-water-retention-and-unsaturated-hydraulic-TVAfmKVdpe
Publisher
i-manager Publications
Copyright
Copyright © 2015 i-manager publications. All rights reserved.
ISSN
2249-0779
Publisher site
See Article on Publisher Site

Abstract

Unsaturated soils with hydraulic properties such as water retention and hydraulic conductivity are considered to be the most crucial parameters for modeling flow process in unsaturated soils. Experimental determination of unsaturated hydraulic conductivity (k ) is a challenging task and it requires a costly and skilled experimentation. Therefore, the normal u practice is to estimate k from water retention characteristics. Water Retention Characteristic (designated as WRC) u includes the development of a graphical relationship between suction and water content (gravimetric or volumetric). This indicates that the accuracy of k is very much dependent on the unambiguous determination of WRC. In this study, a u tensiometer and volumetric water content probe have been used to measure soil suction and volumetric water content, respectively of a local sand by using two different measurement procedures. The k of the soil has been estimated based u on the WRC obtained. The main purpose of this investigation is to understand the extent of influence of different WRC measurement procedures on k estimation. The study indicates that the measurement procedures have moderate u influence on uniqueness of WRC of Brahmaputra sand and hence the estimated k.

Journal

Journal on Civil Engineeringi-manager Publications

Published: Sep 1, 2015

Keywords: Sandy Soil, Soil Suction, Volumetric Water Content, Water Retention Characteristic, Unsaturated Soil Hydraulic Conductivity, Measurement, Estimation

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off