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Full-Text Articles in Engineering
Mechanical Characteristics Of Organically Modified Fly Ash-Kaolinite Mixtures, Xin Kang
Mechanical Characteristics Of Organically Modified Fly Ash-Kaolinite Mixtures, Xin Kang
Doctoral Dissertations
"Fly ash is a hazardous waste material to the environment. Beneficial reuse of fly ash, however, brings economic and environmental benefits, i.e., decreases the cost of disposal, reduces greenhouse gas emission, and improves mechanical properties of construction materials. Due to the lack of pozzolanic properties, the reuse rate of Class F fly ash in geotechnical engineering is relatively low (ACAA 2013). In order to promote the effectiveness and sustainability of high volume reuse of class F fly ash in geotechnical engineering, biopolymers (Chitosan, and Xanthan gum) and synthetic polymers (Polyethylene Oxide, PEO) were used instead of the traditional stabilizers to …
Lateral Impedance Of Single Piles In Inhomogeneous Soil, George Mylonakis, Demetri Roumbas
Lateral Impedance Of Single Piles In Inhomogeneous Soil, George Mylonakis, Demetri Roumbas
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The flexural stiffness and damping (dynamic impedance) of a single vertical pile in an inhomogeneous soil deposit with continuously increasing stiffness with depth, is studied. An analytical formulation based on the Beam-on-Dynamic-Winkler-Foundation (BDWF) model is implemented. The model is used in conjunction with a virtual work approximation and pertinent shape functions for the deflected shape of a long flexible pile, which are analogous to those used in finite-element formulations. Explicit closed-form solutions are derived for: (1) the dynamic pile stiffness; and (2) the damping coefficient at the pile head. Both swaying and rocking vibrations are considered and all associated impedance …