Results 111 to 120 of about 7,901 (298)

Evaluation of Helical Pile Performance in TRcM for Soft Ground Improvement: Insights from Field Test and Application

Advances in Civil Engineering
The tabular roof construction method (TRcM) is an alternative to open-cut and cover tunnels commonly used in constructing underground structures. The open-cut tunnels often lead to traffic congestion and ground settlement, especially in densely populated
Kim Hyeong-Joo, Ham Tae-Gew, Shamsher Sadiq, Peter Rey Dinoy, Youn Gi-Cheol   +4 more
doaj   +1 more source

Experimental Study on the Pullout Behavior of Helical Piles in Geogrid-Reinforced Dense Shahriyar Sand

Buildings
This study investigates the effectiveness of combining helical piles (HPs) with geogrid reinforcement compared to conventional piles in improving pullout performance in dense sand, addressing a key challenge in reinforced foundation design.
Mehdi Ebadi-Jamkhaneh, Mohammad Ali Arjomand, Mohsen Bagheri, Ali Asgari, Pouya Nouhi Hefzabad, Sahar Salahi, Yashar Mostafaei   +6 more
doaj   +1 more source

Defects in Crystalline Packings of Twisted Filament Bundles: II. Dislocations and Grain Boundaries

, 2011
Twisted and rope-like assemblies of filamentous molecules are common and vital structural elements in cells and tissue of living organisms. We study the intrinsic frustration occurring in these materials between the two-dimensional organization of ...
Amir Azadi, D. R. Nelson, F. R. N. Nabarro, Gregory M. Grason, J. P. Hirth, J.-F. Sadoc, L. D. Landau, P. G. de Gennes, T. Aste, T. J. Wess   +9 more
core   +1 more source

Multiple Twinning in Nacre and Aragonite

Advanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt, William O. Nachlas, Bil Schneider, Xiaoming Mao, Eric Tambutté, Alexander A. Venn, Sylvie Tambutté, Pupa U. P. A. Gilbert   +7 more
wiley   +1 more source

Assessment of Experimental Data and Analytical Method of Helical Pile Capacity Under Tension and Compressive Loading in Dense Sand

Buildings
This study presents the results of axial tension (uplift) and compression tests evaluating the capacity of helical piles installed in Shahriyar dense sand using the UTM apparatus. Thirteen pile load experiments involving single-, double-, or triple-helix
Ali Asgari, Mohammad Ali Arjomand, Mohsen Bagheri, Mehdi Ebadi-Jamkhaneh, Yashar Mostafaei   +4 more
doaj   +1 more source

Solvent‐Free Bonding Mechanisms and Microstructure Engineering in Dry Electrode Technology for Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Dry electrode technology revolutionizes battery manufacturing by eliminating toxic solvents and energy‐intensive drying. This work details two promising techniques: dry spray deposition and polymer fibrillation. How their unique solvent‐free bonding mechanisms create uniform microstructures for thicker, denser electrodes, boosting energy density and ...
Yuhao Liang, Hao Long, Zimo Huang, Ting He, Xueming Chen, Meng Li, Hao Chen, Shanqing Zhang   +7 more
wiley   +1 more source

Helical Piles Embedded in Expansive Soil Overlaying Sandy Soil

Al-Khawarizmi Engineering Journal, 2017
In this study, the behavior of square helical piles models (5×5) mm2 embedded in expansive soil bed overlaying a layer of sandy soil was investigated. The sand layer 200mm thickness was compacted into four sub layers in a steel container with diameter ...
Bushra Suhale Al-Busoda, Hassan Obaid Abbase   +1 more
doaj  

Parametric Study of Lateral Load on Helical Pipe Piles in Clay

Geotechnics
In the past decades, as the world has placed emphasis on green energy, solar energy has become a favorable option. Different piled foundations have been designed to strengthen the structure supporting the solar panels.
Guowei Sui, Lin Li, Jialin Zhou, Erwin Oh   +3 more
doaj   +1 more source

High‐Yield Synthesis of Fe‐NC Electrocatalysts Using Mg2+ Templating and Schiff‐Base Porous Organic Polymers

Advanced Functional Materials, EarlyView.
Fe─NC porous oxygen reduction electrocatalysts are prepared employing a 2,4,6‐Triaminopyrimidine‐based porous organic polymer, a Mg2+ Lewis acid, and a low‐temperature cation exchange protocol. Using the polymer precursor achieves high pyrolysis yields and results in atomically dispersed FeNx sites. The resulting catalysts feature hierarchical porosity
Eliot Petitdemange, Jinjie Zhu, Angus Pedersen, Joseph Parker, S. Esmael Balaghi, Shaohua Li, Silvia Favero, José Ignacio Martínez, Sarah Haigh, Maria‐Magdalena Titirici, Anna Fischer, Jesús Barrio   +11 more
wiley   +1 more source

Physical and Finite Element Models for Determining the Capacity and Failure Mechanism of Helical Piles Placed in Weak Soil

Applied Sciences
The foundations of particular engineering structures, including marine and jetty structures, mooring systems for submerged platforms or those on the ocean surface, and transmission towers, are subjected to various external loads including compression ...
Buse Emirler
doaj   +1 more source