ISSN:
1573-1529
Keywords:
gypsum
;
strength
;
deformation
;
Miocene
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
Notes:
Abstract Gypsum is widely distributed in Sivas (Turkey), occurring chiefly in the formations of Miocene age. The gypsum is generally of the alabastrine type with a little of the porphiroblast type and contains traces of clay minerals, anhydrite and calcite. It is a moderately strong rock in terms of its unconfined compressive strength which is related to the crystal size. Strength increases as the crystal size decreases. The strength of gypsum was reduced by approximately 55%, when the samples were kept in the water for 20 days. Most samples exhibit plastic–elastic–plastic deformation. The gypsum has a high modulus ratio, and is a moderately deformable rock. High lateral deformations and low vertical deformations are observed under the vertical stress conditions in accordance with the relationship between modulus ratio and strain.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008969726200
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