Results 11 to 20 of about 312,915 (103)

Energy Dissipation and Damage Evolution Characteristics of Salt Rock under Uniaxial Cyclic Loading and Unloading Tension

open access: yesAdvances in Civil Engineering, 2021
Salt rock has been regarded as the optimal surrounding rock for underground gas storage (UGS), and it is occasionally subjected to cyclic tension because of the gas injection and production of salt cavern, which leads to the change in mechanical ...
Anqi Zhu   +6 more
doaj   +1 more source

Active Galactic Nuclei: Jets as the Source of Hadrons and Neutrinos

open access: yesActa Polytechnica CTU Proceedings, 2014
Active galactic nuclei are extragalactic sources, and their relativistic hot-plasma jets are believed to be the main candidates of the cosmic-ray origin, above the so-called knee region of the cosmic-ray spectrum.
Athina Meli, Paolo Ciarcelluti
doaj   +1 more source

Dynamic Mechanical Characteristics of Fractured Rock Reinforced by Different Grouts

open access: yesAdvances in Civil Engineering, 2021
In order to investigate the dynamic mechanical properties of the fractured rocks reinforced with different slurries, the prefractured and grouted sandy mudstone specimens were tested on a Split Hopkinson Pressure Bar (SHPB), and their dynamic failure ...
Siming Kao   +7 more
doaj   +1 more source

An Experimental Study of GPR Near-Field Problem in Depth Ranging of Buried Objects

open access: yesAdvances in Civil Engineering, 2023
We evaluate the often neglected ranging (or cover depth) error of an object located within the Fresnel Region (or called radiating near-field) and reactive near-field region in ground penetrating radar (GPR).
Rex Yui Kei Cham, Wallace Wai Lok Lai
doaj   +1 more source

Study on the Optimal Prestress Level of RC Beams Reinforced with SMA Bars

open access: yesAdvances in Civil Engineering, 2021
In order to study the optimal prestress level of RC (reinforced concrete) beams strengthened by SMA bars, the finite element software ABAQUS was used to numerically simulate the shear performance of RC beams strengthened by SMA bars with different ...
Zeying Yang   +7 more
doaj   +1 more source

Effects of Waste Cooking Oil on the Antiageing Ability of Bitumen

open access: yesAdvances in Civil Engineering, 2023
Ageing is considered one of the significant issues faced by bituminous mixtures. The short-term ageing phase involves a significant rise in the bitumen’s viscosity, which may lead to early raveling and cracking.
Shobhit Jain   +2 more
doaj   +1 more source

Quality parameters of water stored in cisterns made of cementitious materials [PDF]

open access: yesCerâmica
The use of cisterns for water storage has been an alternative to supply water in regions with low rainfall, such as the Brazilian semi-arid region. Several studies have been conducted, proposing the use of different materials for the construction of ...
L. S. Batista   +5 more
doaj   +1 more source

Spin-phonon coupling in Ba2Zn2Fe12O22 Y-type hexaferrite [PDF]

open access: yesCerâmica
The spin-phonon coupling is frequently observed in magnetic materials and can be investigated using Raman spectroscopy. Surprisingly, there are no studies using Raman spectroscopy to confirm the existence of spin-phonon coupling in the Y-type Hexaferrite
F. M. Silva Júnior   +2 more
doaj   +1 more source

Shaking Table Tests on Wrap Rope Connect Device for Continuous-Beam Bridges with Different Pier Heights

open access: yesAdvances in Civil Engineering, 2022
To investigate the cooperative and isolation effectiveness of the wrapped rope connect device (WRCD) on continuous-beam bridges with different pier heights, shaking table tests were conducted on a typical three-span continuous-beam bridge model.
Yanfang Liu   +3 more
doaj   +1 more source

Experimental and Numerical Studies on the Negative Flexural Behavior of Steel-UHPC Composite Beams

open access: yesAdvances in Civil Engineering, 2021
The cracking of concrete in the negative moment region for a composite beam subjected to a negative bending moment reduces the beam’s strength and stiffness.
Xinhua Liu   +3 more
doaj   +1 more source

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