Abstract
A study was made of the influence of temperature and adsorbed water on the permeability and consolidation characteristics of sodium and calcium montmorillonite. Complete derivation of the basic equation, originally advanced in the Terzaghi Theory of Consolidation, the assumptions forming its basis, development of the time factor and the parameters influencing this factor are presented and reviewed. The components of the two phase system embracing water (bipolar) and naphtha (nonpolar) related to sodium and calcium montmorillonite are reviewed. The theories of the structure of water; causes of adsorption; the production and properties of naphtha are discussed. The origin, structure and the two saturating cations of montmorillonite enumerated above are reviewed and discussed. Laboratory determinations of the consolidation and permeability characteristics of sodium and calcium montmorillonite were made at a range of temperatures using bipolar and nonpolar liquids. The results are presented and discussed. Evaluation of the data shows the influence of temperature has definite but very limited effect on the consolidation and permeability characteristics of the subject clays. However, it is shown that the adsorbed films of water have a profound effect on these properties. The adsorbed water causes the permeability and rate of consolidation to decrease. X-ray diffraction studies of the samples at the completion of the consolidation determination enabled the writer to compute the percentage of total cross-sectional area of a horizontal plane, passed through the sample, which intercepts particles. The percentages were found to increase with decreasing thickness of adsorbed film, and were generally less than was previously reported in literature.
Buchanan, Philip Norton (1964). Effect of temperature and adsorbed water on permeability and consolidation characteristics of sodium and calcium montmorillonite. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -172996.