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Title: GEOTECHNICAL CHARACTERISTICS OF SALT-BEARING SOILS IN KUWAIT
Accession Number: 00641439
Record Type: Component
Availability: Find a library where document is available Abstract: Salt-bearing soils exist along the shorelines of Kuwait and the Persian Gulf states. Many areas inland are also covered by these sediments, which are locally called "Sabkha". The geotechnical properties and behavior of these soils were examined by a comprehensive field and laboratory testing program. The program included penetration tests, sampling, basic properties, consolidation and triaxial tests at two locations within one site in Doha, Kuwait. In addition, plate load tests were conducted using a 0.3-m diameter plate to determine the bearing capacity. The variation of the soil properties with depth was assessed. Test results indicate that a cemented crust develops at ground surface beacuse of the arid climate, which causes continuous evaporation and precipitation of salts in the soil matrix. Below this crust, the soil remains loose with low strength. Sabkha consists of loose gypsiferous fine sandy silt with little clay. It has lower specific gravity and higher moisture contents than other granular soils. Sulphates exceed 60% of the soil composition at ground surface and decrease sharply with depth. Consolidation and triaxial tests indicate increased compressibility and decreased strength with depth. The static cone penetration values ranged from 200 to 600 kPa for the point resistance and 0 to 150 kPa for the frictional resistance. The bearing capacity varied from 40 to 50 kPa at 0.3 m depth with a higher value at the ground surface. The problems associated with these soils, including volume changes, corrosive behavior, and low strength, are discussed.
Supplemental Notes: This paper appears in Transportation Research Record No. 1406, Construction Robotics and Automation, and Foundations Engineering. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Construction robotics and automation, and foundations engineering Monograph Accession #: 01403255
Language: English
Authors: Ismael, Nabil FPagination: p. 68-76
Publication Date: 1993
Serial: ISBN: 0309055539
Features: Figures
(11)
; References
(11)
; Tables
(2)
TRT Terms:
Bearing capacity; Compressibility; Corrosive soils; Field tests; Laboratory tests; Moisture content; Plate bearing test; Properties of materials; Sampling; Soil consolidation test; Soil mechanics; Soil penetration test; Soils; Soils by properties; Specific gravity; Sulfates; Triaxial shear tests; Volume changes
Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways; Materials; I42: Soil Mechanics
Files: TRIS, TRB
Created Date: Jan 25 1994 12:00AM
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