NDLI: The coupling effects of electric field and clay mineralogy on clay aggregate stability

Content Provider	Springer Nature Link
Author	Xu, Chen Yang Yu, Zheng Hong Li, Hang
Copyright Year	2015
Abstract	This paper aims to investigate the effect of clay mineralogy on aggregate stability under the consideration of soil particle surface electric field in electrolyte solution.Aggregates of montmorillonite, kaolinite, and their compounds in different mass ratio were used as experimental materials. The degree to which the aggregates broke down under different electrolyte concentrations was evaluated both qualitatively and quantitatively. The aggregate breakdown process was observed with a video microscope. Furthermore, the percentage of particles (micro-aggregates and single particles) in diameter of <10, <5, and <2 μm to the total sample mass were measured based on Stokes equation.Different electrolyte concentrations correspond to different surface potential values around the particle surface. (1) The amount of released small particles for aggregate of clay compounds was several times higher than that for montmorillonite aggregate after breakdown. (2) Under high surface potential conditions, aggregate breakdown in a way of explosion was observed, and the critical surface potential values for the explosion increased with the increase of kaolinite content in aggregates. (3) The content of released particles for clay compound aggregates with high kaolinite content was much higher than that for aggregates with low kaolinite content under high surface potential values.The coupling effects of electric field and clay mineralogy determined the aggregate stability of montmorillonite and clay compounds. This indicated that soil aggregates with relatively high silt content would be less stable than those with relatively high clay content under heavy rainfall; the most erosive soil might not be clay soils, but the silt soils, especially those under sudden storm after long-time drought.
Starting Page	1159
Ending Page	1168
Page Count	10
File Format	PDF
ISSN	14390108
Journal	Journal of Soils and Sediments
Volume Number	15
Issue Number	5
e-ISSN	16147480
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-02-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aggregate stability Kaolinite Montmorillonite Soil electrostatic field Soil Science & Conservation Environment Environmental Physics
Content Type	Text
Resource Type	Article
Subject	Stratigraphy Earth-Surface Processes

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Pb/Ca ion exchange on kaolinite clay modified with phosphates

Depositional seals in polyacrylamide-amended soils of varying clay mineralogy and texture

Red soil chemistry and mineralogy reflect uniform weathering environments in fluvial sediments, Taiwan

Sorption and distribution of Zn in a sludge-amended soil: influence of the soil clay mineralogy

Principles of Stratigraphy

Adsorption of bensulfuron-methyl on kaolinite as influenced by Pb contamination

Update on Activities

Depth profiling of clay–xanthan complexes using step-scan mid-infrared photoacoustic spectroscopy

Trends on Soil Science in Brazil

The coupling effects of electric field and clay mineralogy on clay aggregate stability

Similar Documents

Pb/Ca ion exchange on kaolinite clay modified with phosphates

Depositional seals in polyacrylamide-amended soils of varying clay mineralogy and texture

Red soil chemistry and mineralogy reflect uniform weathering environments in fluvial sediments, Taiwan

Sorption and distribution of Zn in a sludge-amended soil: influence of the soil clay mineralogy

Principles of Stratigraphy

Adsorption of bensulfuron-methyl on kaolinite as influenced by Pb contamination

Update on Activities

Depth profiling of clay–xanthan complexes using step-scan mid-infrared photoacoustic spectroscopy

Trends on Soil Science in Brazil

The coupling effects of electric field and clay mineralogy on clay aggregate stability