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Title: ASSESSMENT OF IN SITU STRUCTURAL PROPERTIES OF LIME-STABILIZED CLAY SUBGRADES
Accession Number: 00731124
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Lime-stabilized clay subgrades are used almost routinely in Texas to facilitate construction and to provide a foundation for aggregate base courses and hot mix surfaces. Research sponsored by the Texas Department of Transportation demonstrates that the in situ moduli and strength improvements afforded by lime stabilization of these layers are often significant and deserve structural consideration. A study of the range of modulus values determined from falling weight deflectometer deflection data and supported by in situ dynamic cone penetrometer data for 40 pavement subgrades indicates that the lime-stabilized subgrades provide a level of stiffness and strength that is similar to that of an unbounded aggregate base. This substantiates previous literature suggesting that properly designed and constructed lime-stabilized subgrades should be assigned AASHTO structural coefficients in the same range as unbound aggregate bases, that is, between 0.10 and 0.14.
Supplemental Notes: This paper appears in Transportation Research Record No. 1546, Issues in Geotechnical Engineering Research.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Little, D NPagination: p. 13-23
Publication Date: 1996
Serial: ISBN: 0309059518
Features: Figures
(6)
; References
(7)
; Tables
(7)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways; I42: Soil Mechanics
Files: TRIS, TRB
Created Date: Feb 3 1997 12:00AM
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