|
|
|
Title: GEOTECHNICAL EVALUATION OF LOESSIAL SOILS IN KANSAS
Accession Number: 00389569
Record Type: Component
Availability: Find a library where document is available Abstract: Much of western, central, and northeastern Kansas is covered with loess deposits from Bignell, Peoria, and Loveland formations along with Sangamon soils above Loveland unit. In this paper their significant geological and engineering properties are defined, and design guidelines are presented. Montmorillonite is the chief cementing agent in Kansas loess. The Sangamon soil and the Lovelenad loess contain more clay than the Bignell loess and the Peoria loess and have higher in situ density and less permeability. The in situ density of Bignell loess and Peoria loess is less than 85 pcf, and consolidation tests and field experience indicate that they are highly susceptible to hydroconsolidation. A key factor in the collapse potential of Kansas loessial soils appears to be the mineralogy of the soils, specifically the presence of montmorillonite as the chief cementing agent; montmorillonite has the ability to absorb more hydrogen cations than kaolinite and thus is able to adsorb more water. Total stress parameters must be used to design loess slopes approaching the vertical, and effective stress methods are particularly applicable in dealing with saturated loess and with seepage stress where flattened slopes are required. Saturated loess may liquefy due to the cyclic nature of earthquake loading. Stabilization and compaction of loess represent not only an antisubsidence but also an antiliquefaction measure. Proper consideration should be given to zoning of areas of collapsible loessial soils. (Author)
Supplemental Notes: Publication of this paper sponsored by Committee on Soil and Rock Properties. 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 Accession #: 01420444
Authors: Bandyopadhyay, S SEditors: Kaplan, Elizabeth WPagination: pp 29-36
Publication Date: 1983
Serial: ISBN: 0309036666
Media Type: Print
Features: Figures
(7)
; References
(43)
; Tables
(4)
TRT Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways; Materials; I41: General Soil Surveys
Files: TRIS, TRB
Created Date: Oct 30 1984 12:00AM
More Articles from this Serial Issue:
|
