"The work presented is the investigation of the effect of phosphoric acid on the compaction and shear characteristics of pure kaolin. Pure Georgia kaolin clay average particle size of five microns was mixed with different percentages of phosphoric acid. These mixtures were permitted to react for varying periods of time. The results of the study indicate a notable and gradual increase in dry density of the kaolin with increasing percentages of phosphoric acid admixture. The acid admixture ranges from one up to nine percent of the dry weight of the clay. Increase in cohesion of the clay with increase of the percentage of phosphoric acid admixture was observed when the triaxial test for shear failure of the clay was performed with up to nine percent of the acid admixture. The results obtained after two days and seven days curing show the increase in strength of the clay with increased time of curing. It is concluded that the phosphoric acid admixture increases the compaction and shear strength of the clay, also the phosphate fixation takes place in the clay mineral, probably a matter of sorption of phosphate ion by anion exchange with the portion that is fixed being adsorbed in relatively inaccessible position in the clay mineral structure, giving rise to the phenomenon of deflocculation"--Abstract, page 2.
Heagler, John B., 1924-1999
Best, John, 1925-2015
Fisher, Emory D.
Planje, Theodore J., 1919-1980
Civil, Architectural and Environmental Engineering
M.S. in Civil Engineering
Missouri School of Mines and Metallurgy
© 1961 Bhupat Hargovinddas Mehta, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Kaolin -- Analysis
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Electronic OCLC #
Link to Catalog Record
Mehta, Bhupat Hargovinddas, "The effect of phosphoric acid on compaction and shear characteristics of pure kaolin clay" (1961). Masters Theses. 2767.