00488730

Component

http://onlinepubs.trb.org...trr/1988/1190/1190-002.pdf

https://scholar.google.co...LUND&publication_year=1988

A laboratory study was undertaken to evaluate the effect of aging on the properties of Regina clay treated with 2 and 4 percent quicklime. Aging is generally referred to as the time interval between the addition of lime and water to the soil and the compaction of the mixture. Regina claly, a highly expansive clay, was selected for this study because it forms a common subgrade material in Saskatchewan. As a result of this study, it was found that aging had a pronounced effect on the properties of the treated soil. The properties also depended on the percentage of lime. The results indicate that both density and strength decreased as a result of an increased aging period for the treated samples prepared using constant compactive effort. However, the reduction in strength could be eliminated or could even result in an increase if the treated specimens with low percentages (e.g., 2 percent) were subjected to an increased compactive effort. Nevertheless, the results show that increasing the compactive effort could not eliminate the reduced strength for samples treated with higher percentages of lime (e.g., 4 percent) and increased aging (e.g., 24 hr). Increased compaction may well lead to a lower strength as a consequence of overcompaction. Aging appears to have had no significant effect on swell for treated samples prepared by both constant and increased compactive efforts, and little effect as well on the plasticity index.

This paper appears in Transportation Research Record No. 1190, Artificial Ground Freezing and Soil Stabilization. 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

01413988

p. 13-23

1988

Transportation Research Record

0309047587

Figures (9) ; References (11) ; Tables (3)

Calcium oxide; Expansive clays; Laboratory tests; Reduction (Chemistry); Soil compaction; Strength of materials

Geotechnology; Highways; Materials; I42: Soil Mechanics

TRIS, TRB

Oct 31 1989 12:00AM

• BEHAVIOR OF CEMENT-TREATED SOILS IN FLEXURE
• BEHAVIOR OF FROZEN AND UNFROZEN SANDS IN TRIAXIAL TESTING
• COMPARISON OF QUICKLIME AND HYDRATED LIME SLURRIES FOR STABILIZATION OF HIGHLY ACTIVE CLAY SOILS
• EFFECTS OF PULVERIZATION ON THE STRENGTH AND DURABILITY OF HIGHLY ACTIVE CLAY SOILS STABILIZED WITH LIME AND PORTLAND CEMENT
• FIELD EVALUATION OF CRITERIA FOR FROST SUSCEPTIBILITY OF SOILS
• MINIMUM REQUIREMENTS FOR TEMPORARY SUPPORT WITH ARTIFICIALLY FROZEN GROUND
• MODEL SIMULATIONS OF WINCHENDON FREEZE-THAW FIELD DATA
• STRENGTH DEVELOPED FROM CARBONATE CEMENTATION IN SILICA-CARBONATE BASE COURSE MATERIALS