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Zachowania konsolidacyjne past gruntowych jako potencjalnego materiału izolacyjnego

Dobak P., Kowalczyk S.

Przegląd Geologiczny

2010

Vol. 58, nr 9/2

903-911

The paper presents the application of consolidation tests for coefficient permeability evaluation in cohesive soils. The insulating property of Neogene green clays from overburden of Bełchatów lignite mine are subject to study. These soils are potentially fine material to construct barriers for insulating of contaminations. The results of paste samples tests are compared with behavior of non disturbed structure. The difference of natural and artificial formed structure affect on physical properties and permeability behavior too. The continuous loading consolidation tests let to obtain effective seepage of pore water in short time but head gradient is higher than in natural conditions. It caused contraction effects and may decrease the permeability, when pore water pressure is not dissipate. The consolidation stress and pore water pressure is mainly factor of tests results variability. Differences between permeability of samples formed from paste and natural structure samples may depend on mineral composition and compaction of paste. Consolidation tests let quickly evaluate permeability of cohesive soil with respect for the different factors considered in optional barriers designs.

The effect of green clay addition and torsian polarizer on rheological properties of moisturizing cosmetic cream

Broniarz-Press L., Sadowska J., Różański J., Szaferski W.

International Journal of Applied Mechanics and Engineering

2005

Vol. 10, no spec

207-212

The object of the studies was to determine the effect of bentonite and polarizer of special construction on the rheological behaviour change and sensory attributes for moisturizing cream of the original our own production. The cream studied was the oil/water (O/W) emulsion. The measurements were directed to determine the effect of additive concentration, temperature and polarizer on rheological behaviour change of the cream tested. It has been shown that the increase of the green clay concentration causes the increase of plastic-consistency index and yield stress as well as the decrease of flow behaviour index. Additionally it has been found that with the increase of yield stress and time of polarizer use the stability of O/W emulsion tested increased.