Graduate Thesis Or Dissertation
 

Effects of Initial Moisture and Surface Properties on Sorptivity of Coarse Soil and Sand

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/h989r554b

Descriptions

Attribute NameValues
Creator
Abstract
  • Many different models and mechanisms of water imbibition into soil have been described in the literature. Theoretical equations based on those models exist to predict how water will flow in porous media. These models can be useful, but have their weaknesses. Research on imbibition and infiltration into soils has mostly focused on moist soils, as those are more likely to be found in agricultural situations. It was found here that there is a different pattern of sorptivity found at low initial moisture contents - instead of the sorptivity decreasing between a dry medium and one with initial moisture, it increased. This pattern had been seen before in water repellent soils, but was also seen here in soils that exhibited no water repellency. A conceptual model is proposed to describe how water is imbibed into a sandy medium, taking into account the medium's initial moisture content and the surface roughness of the particles. This study answers some questions relating to the relative contributions of capillary and surface flow to the redistribution of soil moisture, but other unexpected observations of sorptivity as a function of moisture content lead to more questions.
License
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
file details AmbrowiakGloriaM2015.pdf 08/07/2017 Public
file details Experiment 1 - Quincy A horizon.xlsm 08/07/2017 Public
file details Experiment 2 - Hydrogen Peroxide.xlsx 08/07/2017 Public
file details Experiment 3 - Heat treated.xlsx 08/07/2017 Public
file details Experiment 4 - Quincy C horizon.xlsx 08/07/2017 Public
file details Quincy C horizon ethanol.xlsx 08/07/2017 Public
file details Experiment 5 - Column Height.xlsm 08/07/2017 Public
file details Experiment 6 - Accusand.xlsm 08/07/2017 Public