WorldCat Identities

Plaster, Rodger W.

Works: 3 works in 5 publications in 1 language and 17 library holdings
Roles: Author
Classifications: TE210.5.S6,
Publication Timeline
Most widely held works by Rodger W Plaster
Reactions in Portland cement-clay mixtures : phase 3 - Soils, profile characteristics and reactions with Portland cement by Rodger W Plaster( Book )

1 edition published in 1969 in English and held by 7 WorldCat member libraries worldwide

The results are presented of a laboratory study on the cement stabilization of three commonly encountered Virginia soils. The report presents the results of an extensive study of the physical, chemical and mineralogical properties of the three soils. The reaction between the three soils and Portland cement was monitored using unconfined compressive strength, x-ray diffraction, petrographic microscope observations and chemical analysis of acid and water leachates from soil-cement pastes. Some of the conclusions developed by the author are as follows: (1) when the major clay minerals are considered montmorillonitic soils suffered the greatest deterioration from cement treatment, kaolinitic soils less and illitic soils least, (2) iron in the iredell soil appeared to react or dissolve readily with cement, (3) the amount of clay present rather than the type of clay appeared to affect the short term strength development, and (4) three mechanisms responsible for reaction of soil and deterioration of soil constituents are offered. These mechanisms are: (a) calcium hydroxide from hydrated cement reacts with clay minerals or amorphous material yielding calcium compounds of silica, alumina and iron; (b) silica, alumina and iron dissolved from soil constituents react with calcium hydroxide forming calcium compounds; and (c) silica, alumina and iron dissolved from soil are physically adsorbed onto partially hydrated cement grains
Composition and removal of automobile windshield films : final report by Rodger W Plaster( Book )

3 editions published in 1970 in English and held by 6 WorldCat member libraries worldwide

Reactions in Portland cement-clay mixtures : final report by David F Noble( Book )

1 edition published in 1970 in English and held by 4 WorldCat member libraries worldwide

This study was an extension of earlier work by Sherwood and Noble to determine the nature of the clay content of common Virginia soils and the strength development of those soils in cement mixtures. In addition attempts were made (1) to study the relationship between parent materials and their derived soils, (2) to determine any changes in physical and chemical properties down the soil profiles, (3) to study the reactions accompanying cement stabilization of soils, and (4) to determine the soil factors influencing strength development in soil-cement mixtures. The three types of soil chosen for the study were (1) a limestone derived silty clay, (2) a basic intrusive residuum, and (3) a resilient micaceous soil. Samples were subjected to chemical, X-ray, microscopic, and engineering analyses. Results showed that the presence of large amounts of clay in the soil-cement specimens appeared more important than the type of clay in determining short-term strength development
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