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 Geological characteristics of soft soils in quangnam – Da Nang coastal plain for planning and designing bridge and road engineering
Tác giả hoặc Nhóm tác giả: Nguyen Thi Ngoc Yen, Nguyen Thanh, Do Quang Thien, Bui Van Truong, Nguyen Hoang Giang, Nguyen Thi Phuong Khue
Nơi đăng: Proceedings of the 3rd international conference Vietgeo 2016, Ha Long City. Geological and Geotechnical Engineering in Response to Climate Change and Sustainable Development of Infrastructure; Số: 1;Từ->đến trang: 131-140.;Năm: 2016
Lĩnh vực: Kỹ thuật; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT
This paper presents the result of studying geological characteristics of soft soils in Quangnam – Danang coastal plain. In researched area, strata mainly include clay mud, sandy clay mud in multiple of origin (ambQ23; mbQ22; ambQ22 and abmQ21). These multiple layers distribute irregular, almost not expose to the surface and their thickness change in different sites. The majority in these soils are fine particle which the main compositions are clay minerals, for example: Illite, kaolinite, montmorilonite and chlorite; and the coarse portion is generally quartz. These soft soils have not consolidated with low pre-consolidated pressure (Pc = 52,55 kPa ÷61,5 kPa in sandy clay mud and Pc = 45,50 kPa ÷ 58,8 kPa in clay mud), high compressive ratio (a0,5-1 ≥ 10 kPa-1), small deformation modulus (E0,5-1≤5000 kPa) and weak shear strength. They are inconvenient objects affecting planning, designing work for different engineering.
ABSTRACT
This paper presents the result of studying geological characteristics of soft soils in Quangnam – Danang coastal plain. In researched area, strata mainly include clay mud, sandy clay mud in multiple of origin (ambQ23; mbQ22; ambQ22 and abmQ21). These multiple layers distribute irregular, almost not expose to the surface and their thickness change in different sites. The majority in these soils are fine particle which the main compositions are clay minerals, for example: Illite, kaolinite, montmorilonite and chlorite; and the coarse portion is generally quartz. These soft soils have not consolidated with low pre-consolidated pressure (Pc = 52,55 kPa ÷61,5 kPa in sandy clay mud and Pc = 45,50 kPa ÷ 58,8 kPa in clay mud), high compressive ratio (a0,5-1 ≥ 10 kPa-1), small deformation modulus (E0,5-1≤5000 kPa) and weak shear strength. They are inconvenient objects affecting planning, designing work for different engineering.
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