Experimental study on compressibility, volume changes, strength and permeability characteristics of unsaturated bentonite-sand mixtures
Joint Authors
Irashid, Intisar Jawdah
Salim, Nahlah Muhammad Nuri
Fattah, Muhammad Yusuf
Source
Engineering and Technology Journal
Issue
Vol. 34, Issue 7A (31 Jul. 2016), pp.1308-1323, 16 p.
Publisher
Publication Date
2016-07-31
Country of Publication
Iraq
No. of Pages
16
Main Subjects
Earth Sciences, Water and Environment
Chemistry
Abstract EN
Expansive soils are generally found in arid and semiarid regions.
These soils undergo volumetric changes upon wetting and drying, thereby causing ground heave and settlement problems.
This characteristic causes considerable construction defects if not adequately taken care of.
Solving the unsaturated soil problems needs the assessment of suction variation in time and space as a response to the variation of environmental factors such as rainfall and evaporation.
To investigate the effect of the changes of the soil suction on the volume changes, expansion index, swelling pressure, shear strength and the coefficient of permeability, small scale experiments were conducted using pure bentonite and the bentonite mixed with sand in proportion of: 30%, 40% and 50% at different initial water contents and dry unit weights was chosen from the compaction curves.
The study shows that the swelling-potential, swellingpressure, the soil-suction, the soil-strength and the coefficient of permeability are affected by the initial-conditions (water-content and dry-unit weight), where all these parameters except the permeability-coefficient marginally decrease with the increase in soil-water content, while the coefficient-of permeability increases with increasing the water-content
American Psychological Association (APA)
Fattah, Muhammad Yusuf& Salim, Nahlah Muhammad Nuri& Irashid, Intisar Jawdah. 2016. Experimental study on compressibility, volume changes, strength and permeability characteristics of unsaturated bentonite-sand mixtures. Engineering and Technology Journal،Vol. 34, no. 7A, pp.1308-1323.
https://search.emarefa.net/detail/BIM-700642
Modern Language Association (MLA)
Fattah, Muhammad Yusuf…[et al.]. Experimental study on compressibility, volume changes, strength and permeability characteristics of unsaturated bentonite-sand mixtures. Engineering and Technology Journal Vol. 34, no. 7A (2016), pp.1308-1323.
https://search.emarefa.net/detail/BIM-700642
American Medical Association (AMA)
Fattah, Muhammad Yusuf& Salim, Nahlah Muhammad Nuri& Irashid, Intisar Jawdah. Experimental study on compressibility, volume changes, strength and permeability characteristics of unsaturated bentonite-sand mixtures. Engineering and Technology Journal. 2016. Vol. 34, no. 7A, pp.1308-1323.
https://search.emarefa.net/detail/BIM-700642
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 1320-1323
Record ID
BIM-700642