DEFORMATION AND CRUSHING OF PARTICLES OF CEMENT TREAT GRANULATE SOIL

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  • DONG PHAN HUY
    Department of Civil Engineering, Yokohama National University
  • HAYANO KIMITOSHI
    Department of Civil Engineering, Yokohama National University
  • KIKUCHI YOSHIAKI
    Geotechnical and Structural Engineering Department, Port and Airport Research Institute
  • TAKAHASHI HIDENORI
    Geotechnical and Structural Engineering Department, Port and Airport Research Institute
  • MORIKAWA YOSHIYUKI
    Geotechnical and Structural Engineering Department, Port and Airport Research Institute

抄録

Cement Treat Granulate Soil (CTGS), a new artificial granular material, has been developed recently by mixing the dredged marine clay with appropriate amounts of cement and polymer. The CTGS particles are crushable and deformable, thus forming a compressible material. Besides being a lightweight material, CTGS is a granular material, and is therefore expected to be applied in reclamations or as a back fill or subsoil materials. This study investigates the deformation and crushing of the CTGS particles and their effects on the stress-strain behaviors. The comprehensive investigation of the principle of treatment, the micro-structure of particles, triaxial stress-strain behaviors, induced particle crushing and particle deformation are first presented via the experimental work done on two types CTGS produced from a lean-mixture design of cement and polymer. Subsequently, the results of X-ray Computer Topography (CT) scanners along with triaxial CD tests on CTGS and conventional gravel having rigid particles are presented. The test results reveal local failure mechanisms between the individual particles of the CTGS and gravel, from which the failure models of the granular materials formed by deformable and crushable grains and non-crushable grains are interpreted.<br>

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