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 Effects of mineral composition and physical - mechanical properties to calculate and design ground improvement work in Quang Nam - Da Nang
Tác giả hoặc Nhóm tác giả: Dr. Nguyen Thi Ngoc Yen1, Assoc. Prof. Bui Van Truong2, Assoc. Prof. Do Quang Thien3, M.Sc. Nguyen Hoang Giang4
Nơi đăng: The 3rd Int. Conf. on Transport Infrastructure & Sustainable Development (TISDIC 2019); Số: ISBN 978-604-82-2893-4;Từ->đến trang: 234-243;Năm: 2019
Lĩnh vực: Kỹ thuật; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT
The results on studying show: Mineral composition of soft soils include Quartz, Illite, Kaolinite in majority; the content of organic of soils are low (<10%), tenderly deacrease with depth. The main chemical composition of soils are SiO2; Al2O3; sand and silt particles occupy the majority. Consolidation ratio Cv =1,70 – 2,14 m2/year (silty mud clay) and Cv =1,31 – 1,34 m2/year (mud clay). Horizontal consolidation ratio, which represent the heterogeneous characteristics of soft soils: m=Ch(tp)/Cv=1,32 - 4,19; m=Ch(ap)/Cv=1,82 -1,86 (Silty mud clay); m= Ch(tp)/Cv =1,09 - 4,14; m= Ch(ap)/Cv =1,52 -1,91 (mud clay). Small deformation modulus (E0,5-1≤5000 kPa) and low shear strength. Application calculation results show that: Mineral composition and physical-mechanical properties of soft soils play an important role in deciding the ground improvement method and its effectiveness.
ABSTRACT
The results on studying show: Mineral composition of soft soils include Quartz, Illite, Kaolinite in majority; the content of organic of soils are low (<10%), tenderly deacrease with depth. The main chemical composition of soils are SiO2; Al2O3; sand and silt particles occupy the majority. Consolidation ratio Cv =1,70 – 2,14 m2/year (silty mud clay) and Cv =1,31 – 1,34 m2/year (mud clay). Horizontal consolidation ratio, which represent the heterogeneous characteristics of soft soils: m=Ch(tp)/Cv=1,32 - 4,19; m=Ch(ap)/Cv=1,82 -1,86 (Silty mud clay); m= Ch(tp)/Cv =1,09 - 4,14; m= Ch(ap)/Cv =1,52 -1,91 (mud clay). Small deformation modulus (E0,5-1≤5000 kPa) and low shear strength. Application calculation results show that: Mineral composition and physical-mechanical properties of soft soils play an important role in deciding the ground improvement method and its effectiveness.
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