IDENTIFICATION OF CLAY SOIL MINERALOGY AND SWELLING BY THE FREE SWELL RATIO METHOD

• DOI: 10.5604/01.3001.0009.4756
• Publication Date: 2016-12-13T07:21:53Z
• Authors: Dorota IZDEBSKA-M...; Emilia WÓJCIK
• Keywords: 0211 other engineering and technologies; 02 engineering and technology

The paper presents the results of free swell measurements of Neogene clays and model clay mixtures composed of Wyoming bentonite and Sedlec kaolinite. Modified free swell index (MFSI) as well as free swell ratio (FSR) were determined and analyzed with respect to pore fluid chemistry, mineral composition and clay content. The FSR, defined as the ratio of the equilibrium sediment volume of 10-g oven dried soil in 0.0025% NaCl solution to that in kerosene, has proved to provide only a rough prediction of clay mineralogy in natural soils.