Masters Theses

Abstract

"This paper is the report of a feasibility study of the combined use of hydrated lime and portland cement to stabilize the troublesome Putnam soil of northern Missouri. In its natural state, this soil is highly plastic, possesses great shrinkage and swell characteristics when the moisture content is changed and is classified as an A-7-5 soil by the A. A. S. H. O. Standards for the Classification of Highway Subgrade Materials.

During the course of this investigation, the following tests were performed: (1) Moisture-Density Relationships for soil with admixtures; (2) Triaxial Compression Test; (3) Unconfined Compression Tests; (4) Freeze-Thaw Tests; and (5) Wet-Dry Tests. In the above tests, the following percentages of lime/cement admixtures were used: 2/6, 2/8, 2/10, 4/4, 4/6, 4/8, 4/10, 6/4, 6/6, 6/8, 8 /4, 8/6 and 10/4. In no case were more than fourteen percent total additive used to insure economy and practicality.

The results obtained showed the use of lime increases the friability and caused the soil to be flocculated, thus permitting easy mixing. The shrinkage and swell characteristics were virtually eliminated as were abnormal volume changes. Increases in the percent of constant lime additive generally reduced the unit weight.

The results of the Confined and Unconfined Compression Tests were erratic, but did show the structure of the soil was changed sufficiently to increase the internal angle of friction and cohesion to a range generally accepted for base course material.

The Freeze-Thaw and Wet-Dry Tests investigated the durability aspect of the soil with admixtures and showed that samples with as low as six percent lime and four percent cement by weight successfully withstood the complete twelve (12) cycle tests"--Abstract, pages 5-6.

Advisor(s)

Heagler, John B., 1924-1999

Committee Member(s)

Davidson, Robert F., 1911-1971
Gevecker, Vernon A. C., 1909-1992

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1960

Pagination

100 pages

Note about bibliography

Includes bibliographical references (pages 96-98).

Rights

© 1960 John H. Kern, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Soils -- Additives -- TestingSoil stabilizationPortland cementLimeSwelling soilsSoil freezing

Thesis Number

T 1295

Print OCLC #

5932503

Electronic OCLC #

957590994

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