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A platform for research: civil engineering, architecture and urbanism
Engineering geological characteristics of the pliocene clays of Bulgaria
Abstract The wide distribution of the Pliocene clays over the territory of Bulgaria and the landslides which appear in them draw the attention of a great number of specialists. Three types of clays may be distinguished: sandy and silty clays, heavy clays with silty seams, and fat clays overlying coal layers. They are water-saturated and show a plastic consistence. With increasing depth, the density decreases and the moisture increases. Sandy and silty clays show the upper-most degree of lithification. Fat clays are at the first stage of physical ageing. The processes of lithification are the cause or a dense system of fissures, some showing a constant dip, about 45°, which reduces the strength of the clays. The internal friction angle and the cohesion are independently determined in laboratory conditions. The possibility of determining, with the help of different-size samples, how the fissuration affects the shear strength is examined. The authors propose to use the residual resistivity of fissured clays for calculating the long-term stability of slopes.
Engineering geological characteristics of the pliocene clays of Bulgaria
Abstract The wide distribution of the Pliocene clays over the territory of Bulgaria and the landslides which appear in them draw the attention of a great number of specialists. Three types of clays may be distinguished: sandy and silty clays, heavy clays with silty seams, and fat clays overlying coal layers. They are water-saturated and show a plastic consistence. With increasing depth, the density decreases and the moisture increases. Sandy and silty clays show the upper-most degree of lithification. Fat clays are at the first stage of physical ageing. The processes of lithification are the cause or a dense system of fissures, some showing a constant dip, about 45°, which reduces the strength of the clays. The internal friction angle and the cohesion are independently determined in laboratory conditions. The possibility of determining, with the help of different-size samples, how the fissuration affects the shear strength is examined. The authors propose to use the residual resistivity of fissured clays for calculating the long-term stability of slopes.
Engineering geological characteristics of the pliocene clays of Bulgaria
Demirev, A. (author) / Ivanov, I. (author) / Ilieva, L. (author) / Stoeva, P. (author)
1972
Article (Journal)
Electronic Resource
English
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
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