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Permeability measurement of geocomposites on orthogonal specimens
Souček, Kamil ; Staš, Lubomír
The hydraulic conductivity coefficient of geocomposites is important parameter for evaluation of sealing chemical grouting. There can be problem with preparing of cylindrical gocomposite specimens by drilling for permeability measurements in some cases (e.g. specimens fall into small pieces of irregular shapes). In such cases shaping of geocomposite specimens is easier by cutting than drilling. The paper deals with concept of preparing and methods of hydraulic conductivity measurements at orthogonal geocsomposites specimens conditions. There are some results of geocomposites permeability measurements in this paper.
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Prospects of the use of X-ray computer tomography in geomaterials and geotechnics research
Souček, Kamil ; Staš, Lubomír
The paper deals with possibilities of industry X-Ray CT utilization in geo-materials and geotechnical research. This paper was elaborated on the basis of professional literature study (Proc. of the Int. Workshop on X-ray CT for Geomaterials – soils, concrete, rocks, Geox 2003 and Proc. of the Int. Workshop on Advances in X-Ray Tomography for Geomaterials, Geox 2006) and first experiences of X-Ray CT utilization within the frame of research activities of Institute of geonics, ASCR, at Kumamoto University. There are some results from coal geocomposite failure study, visualization of geocomposite wetting (soaking) process and checking of drill core integrity after carried out overcoring stress measurements in the paper.
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