Founded 1934 by Prof. Dr Stefan Bončev
A Geo-Sciences Journal of the Geological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciences
Official Journal of the Carpathian-Balkan Geological Association

Scanning electron microscopy investigation of loess soil stabilized with cement and natural zeolite

Pages: 
pp. 15-21
Boriana Tchakalova
Geological Institute Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
Tzvetoslav Iliev
Geological Institute Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
Abstract: 

Zeolite and Portland cement have been used to stabilize a loess soil from the region of Kozloduy (North Bulgaria). This paper examines the microstructural behavior of cement–zeolite treated loess soil without compaction at water content higher than optimum. Scanning electron microscopy and semi-quantitative energy dispersive spectroscopy analyses on stabilized loess were carried out after various curing periods. The identification of the formation of cementitious products in treated loess soil was conducted by SEM–EDS spectral analysis. Based on the study of the microstructural development, it was found that the modified loess microstructure undergoes significant modifications during the observed period.

Keywords: 

loess soil, cement-zeolite, non-compacted stabilization, soil microstructure

DOI: 
10.52321/GeolBalc.51.1.15
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VOLUME 51 (1)/April 2022

DETAILS

Avtandil Okrostsvaridze
Institute of Earth Sciences, Ilia State University, 77 Ntsubidze Str., 0177 Tbilisi, Georgia
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David Bluashvili
Faculty of Mining and Geology, Georgian Technical University, Kostava Str., 0175 Tbilisi, Georgia
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Salome Gogoladze
Institute of Earth Sciences, Ilia State University, 77 Ntsubidze Str., 0177 Tbilisi, Georgia
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Rabi Gabrielashvili
Faculty of Mining and Geology, Georgian Technical University, Kostava Str., 0175 Tbilisi, Georgia

The discovery of U mineralization in the late Variscan plagiogranite vein of the Shkhara crystalline massif (Greater Caucasus, Georgia)

Boriana Tchakalova
Geological Institute Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Tzvetoslav Iliev
Geological Institute Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Scanning electron microscopy investigation of loess soil stabilized with cement and natural zeolite

Nikolay Bonev
Department of Geology, Palaeontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
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Petyo Filipov
Geological Institute of Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Tanya Stoylkova
Department of Mineralogy, Petrology and Economic Geology, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria

Chemical composition of late Eocene–early Oligocene corals in reef buildups from the Thrace basin, Bulgaria–Greece: Paleoenvironmental implications

Lubomir Metodiev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Elena Koleva-Rekalova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Silviya Petrova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Docho Dochev
Department of Geology, Palaeontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
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Louiza Dimowa
Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 107, 1113 Sofia, Bulgaria

New data on the stratigraphy of the Middle Jurassic siliciclastic rocks from the West Balkan Mountains (West Bulgaria)

Madlena Tsvetkova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria

Comparison between the geological settings of the Varbitsa (NW Bulgaria) and Bure (SE France) sites for geological disposal of radioactive waste

Editorial Board

22nd Congress of the Carpathian-Balkan Geological Association (CBGA2022), 7–11 September 2022, Plovdiv (Bulgaria)

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