TY - JOUR
T1 - Study on swelling properties of an expansive soil deposit in Saskatchewan, Canada
AU - Azam, Shahid
AU - Shah, Imran
AU - Raghunandan, Mavinakere E.
AU - Ito, Maki
N1 - Funding Information:
Acknowledgments The authors would like to acknowledge the logistic support from the City of Regina and the National Research Council and the financial assistance from the Communities of Tomorrow. Thanks to the University of Regina for providing laboratory space and computing facilities. Thanks to the Advanced Separation Technologies Division of Natural Resources Canada and the International Test Centre of the University of Regina for conducting soil composition analysis.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2013/2
Y1 - 2013/2
N2 - The main objective of this paper was to study the swelling properties of Regina clay. The deposit comprises a topsoil (surface to 0. 3 m depth), an expansive clay (0. 3-8 m), and a bottom till (8-9 m). High liquid limit (70 ± 15 %) and plastic limit (33 ± 4 %) indicated high water retention and adsorption capacity for the clay. Irrespective of the cover type (vegetation and cracked road), the field water content in summer closely matched the plastic limit. The clay was characterized by medium-to-high swelling that was best predicted by SP = 0. 16 (Ip)1. 188. The soil had 51 % clay minerals including smectite (32 %), illite (7 %), kaolinite (5 %), and chlorite (3 %). With a CEC of 40 cmol(+)/kg, Ca2+ and Mg2+ were found to be the main exchangeable cations: the specific surface area was 50 m2/g. The SP and Ps for a 1. 2 m deep sample measured 12 % and 260 kPa, respectively, and the estimated surface heave of 180 mm gradually diminished to 3. 6 m depth. These values matched well with consistency-based correlations.
AB - The main objective of this paper was to study the swelling properties of Regina clay. The deposit comprises a topsoil (surface to 0. 3 m depth), an expansive clay (0. 3-8 m), and a bottom till (8-9 m). High liquid limit (70 ± 15 %) and plastic limit (33 ± 4 %) indicated high water retention and adsorption capacity for the clay. Irrespective of the cover type (vegetation and cracked road), the field water content in summer closely matched the plastic limit. The clay was characterized by medium-to-high swelling that was best predicted by SP = 0. 16 (Ip)1. 188. The soil had 51 % clay minerals including smectite (32 %), illite (7 %), kaolinite (5 %), and chlorite (3 %). With a CEC of 40 cmol(+)/kg, Ca2+ and Mg2+ were found to be the main exchangeable cations: the specific surface area was 50 m2/g. The SP and Ps for a 1. 2 m deep sample measured 12 % and 260 kPa, respectively, and the estimated surface heave of 180 mm gradually diminished to 3. 6 m depth. These values matched well with consistency-based correlations.
KW - Clay mineralogy
KW - Expansive soils
KW - Geotechnical properties
KW - Heave prediction
KW - Swelling potential
UR - http://www.scopus.com/inward/record.url?scp=84874505689&partnerID=8YFLogxK
U2 - 10.1007/s10064-012-0457-0
DO - 10.1007/s10064-012-0457-0
M3 - Article
AN - SCOPUS:84874505689
SN - 1435-9529
VL - 72
SP - 25
EP - 35
JO - Bulletin of Engineering Geology and the Environment
JF - Bulletin of Engineering Geology and the Environment
IS - 1
ER -