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Caractérisation et quantification des minéraux argileux dans les sols expansifs par spectroscopie infrarouge aux échelles du laboratoire et du terrain.

Abstract : The purpose of this study is the detection and quantification of clay minerals, especially swelling clay minerals, in surface soils part. This study is carried out at local and global scale, in order to support swelling soil hazards approach of the engineering offices. The first part presents general principles of infrared spectroscopy and the database used in the thesis. Then, we compare two frequently used methods in soil sciences: statistic methods (PLSR and PCA) and absorption figures analysis featuring clay minerals. They mainly provide kaolinite quantification in multiphase mixtures and in soil. The limits of smectite quantification of both methods lead to a new method development based on continuous wavelet transform and cross correlation. This method is the most efficient and promising one for weak quantification of swelling minerals, at local scale as well as at global scale, in studies prevention of swelling soil hazard
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Submitted on : Wednesday, May 18, 2011 - 3:15:05 PM
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Camille Truche. Caractérisation et quantification des minéraux argileux dans les sols expansifs par spectroscopie infrarouge aux échelles du laboratoire et du terrain.. Planète et Univers [physics]. Université Paul Sabatier - Toulouse III, 2010. Français. ⟨tel-00594021⟩

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