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Title:

EFFECT OF LIME ON CEMENT STABILIZATION OF MONTMORILLONITIC SOILS

Accession Number:

00231300

Record Type:

Component

Abstract:

ALTHOUGH LIME AS A SECONDARY ADDITIVE TO SOIL-CEMENT MIXTURES HAS BEEN INVESTIGATED BEFORE, THE EFFECTIVENESS OF THE ADDITION HAS NOT BEEN THOROUGHLY EXPLAINED. THE PRESENT RESEARCH ATTEMPTS TO FILL THIS GAP. FIVE SOILS WERE STUDIED. THOUGH ALL CONTAINED MONTMORILLONITE AS THE DOMINANT CLAY MINERAL, THEY VARIED TEXTURALLY FROM FRIABLE LOESS TO HIGH- CLAY GUMBOTIL. VARIOUS AMOUNTS OF LIME AND CEMENT WERE USED, AND THE COMPRESSIVE STRENGTHS OF COMPACTED SPECIMENS WERE DETERMINED AFTER 7, 28, AND 84 DAYS HUMID ROOM CURING AND 1 DAY IMMERSION IN DISTILLED WATER. THE RESULTS OBTAINED INDICATE THAT THERE IS AN OTPIMUM AMOUNT OF LIME WHICH GIVES THE MAXIMUM STRENGTH FOR A FIXED AMOUNT OF CEMENT. THE INCREASE OF STRENGTH WITH ADDITION OF LIME WAS HIGHER FOR SOILS WITH HIGH CLAY CONTENT AND MUCH HIGHER WHEN NONCALCAREOUS SOILS OF SIMILAR GRADATION WERE USED. THE EFFECT OF ELAPSED TIME BETWEEN MIXING AND COMPACTING WAS STUDIED. THE RESULTS SHOWED A DECREASE OF DENSITY AND STRENGTH WITH THE TIME ELAPSED BETWEEN MIXING AND COMPACTING WHEN THE MOLDING MOISTURE CONTENT WAS BELOW OR NEAR THE OPTIMUM MOISTURE CONTENT. USE OF LIME MINIMIZED BOTH THE DENSITY AND STRENGTH REDUCTIONS DUE TO THIS TIME LAG. HOWEVER, WITH MOLDING MOISTURES ABOVE THE OPTIMUM MOISTURE CONTENT AN INCREASE IN STRENGTH WAS OBTAINED WHEN AN INTERVAL OF 2 HOURS WAS ALLOWED BETWEEN MIXING AND COMPACTING. UNIMMERSED, UNCONFINED COMPRESSIVE STRENGTHS WITHIN A PERIOD OF 24 HOURS AFTER MIXING AND SEDIMENTATION TESTS WERE PERFORMED ON SOIL-LIME-CEMENT MIXTURES FOR TRACING EXCHANGE REACTIONS AND SEDIMENTATION. /AUTHOR/

Supplemental Notes:

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 #:

01410731

Language:

English

Authors:

Pinto, C D
Davidson, D T
Laguros, J G

Pagination:

pp 64-83

Publication Date:

1962

Serial:

Highway Research Board Bulletin

Issue Number: 353
Publisher: Highway Research Board

Conference:

41st Annual Meeting of the Highway Research Board

Location: Washington DC, United States
Date: 1962-1-8 to 1962-1-12
Sponsors: National Research Council

Media Type:

Print

Features:

Figures (11) ; References (13) ; Tables (7)

Uncontrolled Terms:

Immersion

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways

Files:

TRIS, TRB

Created Date:

Aug 15 2004 2:41AM

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