Abstract
The relationship between soil fabric and the anisotropic consolidation characteristics of a sensitive, highly flocculated marine clay has been studied using x-ray diffraction techniques. Measurements of the clay particle parallelism (fabric) were performed on “undisturbed” and remoulded samples of Leda clay from Ottawa, Canada, in an attempt to determine the influence of sample disturbance on soil fabric and laboratory consolidation test results.The amplitudes of the 10 Å clay peaks of the “undisturbed” natural clays, measured in the major principal plane, increased from about 11 counts/second at low consolidation pressures to about 40 counts/second at 64 tons/sq. ft. This is interpreted as resulting from reorientation of many of the clay platelets into the plane perpendicular to the direction of the consolidation pressure. An abrupt reorientation occurred when the pre-consolidation pressure was exceeded.Remoulding the clay apparently causes a marked breakdown of the interparticle bonds as evidenced by stronger 10 Å peaks and inferred greater particle parallelism at any given consolidation pressure within the range studied. This increase in parallelism is associated with a pronounced reduction in void ratio when compared with the “undisturbed” clay.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
