ISSN:
1573-9279
Source:
Springer Online Journal Archives 1860-2000
Topics:
Architecture, Civil Engineering, Surveying
,
Geosciences
Notes:
Conclusions 1. Fine mineral powders in the air-dry state contain 0.02–0.5 wt.% of vapors and gases adsorbed on their surfaces; the principal constituent of these is water. 2. Prolonged residence in vacuum of 1·10−9 mm T=20°C has practically no effect on the mechanical properties of the powders under investigation. 3. Heating the specimens at 450°C in vacuum will drive off most of the adsorbed material, and as a result there are marked changes in the interactions at the contacts between grains. Marked intergranular cohesion arises, and the angle of internal friction increases.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01705573
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