en Soil Mechanics Classic Soil Mechanics Classic Research Paper Research Paper <p>Soft soil in Hanoi, Vietnam, is mainly originated from lacustrine and shallow-sea sediment. This is the youngest formation with<br> around 3000 years of age. To serve the research purpose, clayey soil samples at ten areas in Hanoi and some places in the RRD<br> are prepared. Mineral composition of soils determined by X-ray diffraction analysis shows that clay minerals are predominated<br> by Illite, Kaolinite, Chlorite, and Montmorillonite respectively. Many previous researches indicated that in saline-saturated<br> condition, types of cation in saline water and types of clay mineral in soil layers, as well as their predomination decide the<br> changing process of geotechnical properties in other manner. In this paper, the initial relationship between geotechnical<br> properties and clay mineral composition of Hanoi soft soils in saline-saturated media is established</p> Hanoi soft soils, clay mineral, saline soils, saline media, geotechnical properties 87 92 http://ijce.iust.ac.ir/browse.php?a_code=A-10-834-2&slc_lang=en&sid=1 B.L. Kirov kirov_fte@uacg.bg 180031947532846009667 180031947532846009667 Yes University of Architecture N.N. Truc nn_truc@abv.bg 180031947532846009668 180031947532846009668 No University of Architecture