Hydraulic Flow through Engineering Bentonite-Based Containment Barriers

Loh, Eric Wooi Kee and Chitral Wijeyesekera, Devapriya (2015) Hydraulic Flow through Engineering Bentonite-Based Containment Barriers. American Journal of Applied Sciences, 12 (11). pp. 785-793. ISSN 1554-3641

Hydraulic Flow through Engineering BentoniteBased.pdf - Published Version

Download (214kB) | Preview
Official URL: http://thescipub.com/journals/ajas


This paper presents the use of software modelling as a tool to study the impact of hydraulic “resistivity” on the contaminant transport through bentonite-based containment barriers. A sensitivity analysis on the predicted data was carried out by varying the boundary conditions as well as the hydraulic resistance to flow through varying contaminant transport parameters. Accordingly, both advective and diffusive flow processes are considered as that which resists the flow. In particular, the effect on the contaminant migration due to desiccation cracking is explored. Laboratory evidence is provided and discussed to show how the initial microstructure of the clay influences the development of subsequent macro structural features such as shrinkage crack patterns. The effect of these cracks and the intensity of cracking on the contaminant migration are modelled and pragmatically discussed. Additionally, the effect on the hydraulic conductivity of bentonite-based barriers, when permeated with non-standard liquids is discussed and a typical analytical output is presented.

Item Type: Article
Uncontrolled Keywords: Bentonite, Containment Barriers, Leachate, Cation Exchange, Advective and Diffusive Flow
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering and Quantity Surveying
Depositing User: Unnamed user with email masilah.mansor@newinti.edu.my
Date Deposited: 04 May 2016 06:25
Last Modified: 14 Sep 2016 03:51
URI: http://eprints.intimal.edu.my/id/eprint/228

Actions (login required)

View Item View Item