LIME REACTIVITY OF TROPICAL AND SUBTROPICAL SOILS
Research to deermine the factors that significantly influence lime pozzolanic reactions in soils has been fairly well restricted to soils of temperate regions. Extrapolation of these data to tropical soils was not justified without additional investigation. Selection and sampling of tropical and subtropical soils in this study were accomplished so that representative cross sections of soil characteristics were provided. The laboratory investigations included the use of standard techniques to determine physical, chemical, and mineralogical properties of the 26 soils. Development of lime pozzolanic reactions was measured by maximum incrasese in the unconfined compressive strength of the lime-treated soils after various curing periods. It was concluded that soil pH, cation exchange capacity, base saturation, silica sesquioxide ratio, silica-alumina ratio, and pedo-logic order influence the development of lime pozzolanic reactions in Ultisols and Oxisols. Strength increases after 28 days of curing at 73 F varied from 22 to 606 psi. Different indexes of lime reactivity and weathering were found to be valid within the Ultisols (soil pH) and within the Oxisols (silica sesquioxide ratio).
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309021731
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Supplemental Notes:
- Publication of the paper sponsored by Committee on Lime and Lime-Fly Ash 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
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Authors:
- Harty, John R
- Thompson, Marshall R
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Conference:
- 52nd Annual Meeting of the Highway Research Board
- Location: Washington District of Columbia, United States
- Date: 1973-1-22 to 1973-1-26
- Publication Date: 1973
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 102-112
- Monograph Title: Soil stabilization
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Serial:
- Highway Research Record
- Issue Number: 442
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Calcium oxide; Chemical properties; Chemical reactions; Compressive strength; Concrete curing; Laboratory tests; Mineralogy; Physical properties; Pozzolanic action; Soils; Time; Tropics
- Old TRIS Terms: Unconfined compression tests
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00159561
- Record Type: Publication
- ISBN: 0309021731
- Files: TRIS, TRB
- Created Date: Sep 20 1977 12:00AM