Results 231 to 240 of about 26,020 (274)
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Complexes vermiculite—aminoacides
Clay Minerals, 1971AbstractVermiculite single crystals immersed in aminoacid solutions of varying concentration and pH, form complexes characterized by discrete basal spacings. Organic molecules enter in the interlayer space as cations and as dipolar ions through mechanisms of ion exchange and dipole adsorption.The basal spacings of the complexes were recorded.
J. A. Rausell-Colom, P. S. Salvador
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Interstratification in Vermiculite
Clays and Clay Minerals, 1967AbstractVermiculite (Libby, Mont.) was ground in a Waring blender in a 1 m NaCl solution and, after removal of excess electrolyte, the clay fraction was separated by sedimentation. The clay was predominantly vermiculite: X-ray diffraction patterns of Ca-saturated and oriented specimens showed an intense and sharp 15 Å and a weak 25 Å diffraction maxima
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Thermal resistance of hardened cement pastes containing vermiculite and expanded vermiculite
Journal of Thermal Analysis and Calorimetry, 2011The durability and thermal stability of hardened Portland cement pastes containing vermiculite (V) and expanded vermiculite (EV) exposed to high temperatures were studied. Different mixtures were prepared using 2.5, 5, and 10 wt% of both types of V. Each mixture, after 28 days of hydration, was heated at 300, 600, and 800 °C for 3 h.
S. M. A. El-Gamal +2 more
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Nature, 1949
GRUNER1 has shown that vermiculite consists of talc-like layers, 9·26 A. high, alternating with water layers (4·95 A.), the total water content of the mineral being in the region of 20 per cent. Theories2,3 as to the nature of the water layers have found difficulty in explaining the observation1,2,3 that, when vermiculite is heated at 110° C., about ...
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GRUNER1 has shown that vermiculite consists of talc-like layers, 9·26 A. high, alternating with water layers (4·95 A.), the total water content of the mineral being in the region of 20 per cent. Theories2,3 as to the nature of the water layers have found difficulty in explaining the observation1,2,3 that, when vermiculite is heated at 110° C., about ...
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Mechanically treated vermiculite particles in PCL/vermiculite thin films
Materials Today: Proceedings, 2022Karla Čech Barabaszová +3 more
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Preparation and thermal properties of commercial vermiculite bonded with potassium silicate
Thermochimica Acta, 2021Yuanzheng Yue +2 more
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