Cation Exchange Capacity (CEC) determination from spectroscopy

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Abstract:

Swelling soils are a major engineering problem and their detection is one of the most important site investigation undertakings in the construction industry. Methods of their detection have been developed over the years, most of which utilize the soil physical properties as the indices of their identification. Some of these have proved quite expensive and time-consuming. In this research an alternative, relatively faster and cheaper method is explored. The method involves the use of Methylene Blue Absorption (MBA) as the engineering index to estimate the Cation Exchange Capacity (CEC) and spectral absorption feature characteristics as the mineral identification method. The relationship between the MBA and the characteristics of the absorption features is used to explore the possibility of estimating CEC from spectral data.

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/01431160305010

Affiliations: 1: Division of Geological Survey, International Institute for Aerospace Survey and Earth Sciences (ITC), PO Box 6, 7500AA Enschede, The Netherlands; e-mail: kariuki@itc.nl 2: International Institute for Aerospace Survey and Earth Sciences (ITC), PO Box 6, 7500AA Enschede, The Netherlands; e-mail: vdmeer@itc.nl, and Delft University of Technology. Faculty of Civil Engineering and Geosciences, Department of Applied Earth Sciences, Mijnbouwstraat 120, 2600 GA Delft, The Netherlands; e-mail: f.d.vandermeer@citg.tudelft.nl 3: Delft University of Technology, Faculty of Mining and Petroleum Engineering, Department of Applied Earth Sciences, Mijnbouwstraat 120, 2600 GA Delft, The Netherlands; e-mail: P.N.W.Verhoef@citg.tudelft.nl

Publication date: January 1, 2003

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