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Nanotechnology Now - Germany Publishes Report on Developing a Specific OECD Test Guideline on Particle Size and Particle Size Distribution of Nanomaterials

Nanotechnology Now - Germany Publishes Report on Developing a Specific OECD Test Guideline on Particle Size and Particle Size Distribution of Nanomaterials
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Lynnl Bergeson , Bergeson Campbell , Health Bau , Institute For Materials Research , Test Guideline Program , German Environment Agency , Institute For Occupational Safety , Organization For Economic Cooperation , Nanotechnology Columns , Germany Publishes Report , Particle Size , Particle Size Distribution , Publishes Report , Federal Institute , Occupational Safety , Materials Research , Economic Cooperation , Test Guideline ,

"Cyclic behaviour of compacted black soil-coal wash matrix" by Courage Kwasi Dzaklo, Cholachat Rujikiatkamjorn et al.

Recent population and industrial growth require innovative approaches for recycling construction materials for civil infrastructure such as railways, roads, and building foundations. This study adopts a combination of expansive black soil blended with coal wash (CW), a by-product of coal mining, to produce a resilient substructural fill for railroads. When considered individually, expansive clays and CW are prone to high swell pressure, shrinking and swelling, excessive degradation, and relatively low bearing capacity, properties that would adversely affect infrastructure. This current study is a laboratory characterisation of soil and CW mixtures in relation to Atterberg Limits, Particle Size Distribution (PSD), and X-ray diffraction spectroscopy. A mini-compaction procedure is used to assess the changes in maximum dry density and optimum moisture content. This is followed by a series of consolidated-undrained monotonic and cyclic triaxial tests of the mixtures. Our findings show that ....

Atterberg Limits , Particle Size Distribution , Coal Wash , Xpansive Clays , Esilient Modulus , Well Pressure ,