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Full-Text Articles in Geotechnical Engineering
Correlations Between Dynamic Probe Blow Count And Undrained Shear Strength For Peat At A Well-Characterised Raised Bog In Ireland, David Mchugh, Ciaran Reilly, Juan Pablo Osorio
Correlations Between Dynamic Probe Blow Count And Undrained Shear Strength For Peat At A Well-Characterised Raised Bog In Ireland, David Mchugh, Ciaran Reilly, Juan Pablo Osorio
Articles
Peat deposits are generally heterogeneous, with large variations over small areas. Peat has an extremely high water content, high compressibility and low shear strength. This presents a major issue in studying the geomechanical behavior of peat. For this study, field and laboratory tests were conducted to establish the undrained shear strength (su) of peat at a cutover industrial peatland in Ireland which had been extensively characterized in the past. The new field work included TRL-type Dynamic Cone Penetrometer, Mackintosh probe and field vane shear tests. A correlation was developed between the Mackintosh probe “M-value” blow count and the …
Mechanical Properties Of Saline Soil Solidified With Lime, Fly Ash And Modified Polyvinyl Alcohol Under Freeze-Thaw Cycles, Min Li, He-Miao Yu, Hong-Pu Du, Bao-Yu Cao, Shou-Xi Chai
Mechanical Properties Of Saline Soil Solidified With Lime, Fly Ash And Modified Polyvinyl Alcohol Under Freeze-Thaw Cycles, Min Li, He-Miao Yu, Hong-Pu Du, Bao-Yu Cao, Shou-Xi Chai
Rock and Soil Mechanics
The repeated freeze-thaw cycles with seasonal alternations have an obvious effect on soil structure. To reduce the temperature sensitivity of saline soil and then use it in engineering, a combined treatment method is proposed, where lime, fly ash and modified polyvinyl alcohol (MPA) are used as solidified materials. Unconfined compressive strength (UCS) tests and microstructure characterization are firstly used to evaluate the solidified effect and obtain the parameters range of solidified materials. Then, the shear strength tests for determining cohesion and internal friction angle are conducted. Experiments are conducted by considering separate and combined treatments of materials mentioned above. The …
Improvement Of Slope Soil Consolidation Capacity Of Plant Root System Based On Regulation Of Root Architecture, Zhen-Yu Li, Miao Ouyang, Hong-Bin Xiao, Ju-Shan Wang, Tao Li, Si-Si Liu
Improvement Of Slope Soil Consolidation Capacity Of Plant Root System Based On Regulation Of Root Architecture, Zhen-Yu Li, Miao Ouyang, Hong-Bin Xiao, Ju-Shan Wang, Tao Li, Si-Si Liu
Rock and Soil Mechanics
The effect of plant slope protection is strongly associated with the root architecture in soil. In this paper, the water?fertilizer combination method was used to regulate the plant root configuration, and the influence of the regulated plant root architecture on the slope soil strength was studied. In terms of the practice of highway slope engineering, a field fill slope for test was made. Vetiver was selected as slope protection species, and 9 groups of water?fertilizer combinations were designed to regulate the root architecture of plant in slope soil. After 10-months growth, the roots of plants on the slope were counted …