Geotechnical Engineering Department

Study on SGM(light-weight geomaterial)

SGM is geotechnical material made of high water content clay mixed with air foam and cementing material. This is characterized that the unit weight in light and its shearing strength is large. Such characteristics are favorable to backfilling materials for reducing the earth pressure to structures.

Our division have been studying on physical and mechanical characteristics, and long-term durability of SGM.

Further information could be obtained in our papers listed below.

Otani, J., Mukunoki, T. and Yamagata, N., "Evaluation of Hydraulic Property of Light Weight Soil with Air Foams," Proc. of Int. Workshop on Lightweight Geo-Materials, pp.159-164, Japanese Geotechnical Society, 2002.

Otani, J., Mukunoki, T. and kikuchi, Y., "Visualization for engineering property of in-site light weight soils with air foam," Soils and Foundations, Vol.142, No.3, pp93-105, Japanese Geotechnical Society, 2002.

Kikuchi, Y., Otani, J., Tokunaga, K. and Mukunoki, T, "Chatacterization of permeability on light weight soils with air foam using X-ray CT scanner," X-ray CT for Geomaterials (Proc. of Int. Workshop on X-ray CT for Geomaterials,
GEOX2003), pp.133-138, Balkema, 2004.

img:The figures show the results of a seepage test of SGM, obtained by micro-focus X-ray CT scanner

The figures show the results of a seepage test of SGM, obtained by micro-focus X-ray CT scanner. The whiter are
areas in the figures, the higher are the density of the areas, that is, the areas have been inundated with water.