Results 21 to 30 of about 141,507 (255)
Void Detection of Airport Concrete Pavement Slabs Based on Vibration Response Under Moving Load
SensorsThis study proposes a vibration-based approach for detecting and quantifying sub-slab corner voids in airport cement concrete pavement. Scaled down slab models were constructed and subjected to controlled moving load simulations.
Xiang Wang +4 more
doaj +1 more source
Applied Sciences, 2019 A new piezoelectric composite, macro fiber composite (MFC) is recombined with piezoceramic fibers, an epoxy resin basal body, and an interdigitated electrode.
Jiarui Zhang +4 more
doaj +1 more source
Experimental Research on Bond Behavior between GFRP Bars and Stirrups-Confined Concrete
Applied Sciences, 2019 This paper presents the results of a series of pullout tests that were performed on Glass-fiber-reinforced polymer (GFRP) bars embedded in concrete, while providing a detailed report on the influence of various variables that impinge upon bond behavior ...
Kui Gao +4 more
doaj +1 more source
Cities, traffic, and CO2: A multidecadal assessment of trends, drivers, and scaling relationships [PDF]
, 2015 Emissions of CO2 from road vehicles were 1.57 billion metric tons in 2012, accounting for 28% of US fossil fuel CO2 emissions, but the spatial distributions of these emissions are highly uncertain.
Gately, Conor K. +2 more
core +1 more source
SensorsAs the interface between frozen and unfrozen soil, the ice front is not only a spatial location concept, but also a potentially dangerous interface where the mechanical properties of soil could change abruptly. Accurately identifying its spatial position
Xing Hu +5 more
doaj +1 more source
Energy Science & Engineering, 2020 Aiming at serious deformation and failure of large‐section coal roadway under mined zones in ultra‐thick coal seam, its deformation and failure characteristics are analyzed based on the field measurement.
Yang Tai +3 more
doaj +1 more source
Meikuang Anquan, 2020 In order to study the deformation and failure laws of roadway surrounding rock under the condition of layered rock, the one orbit lane of Shandong Yuncheng Coal Mine was taken as the research background, and PFC2D discrete element software was adopted ...
WANG Huifeng, SONG Libing
doaj +1 more source
Mechanism and prevention measures of asymmetric floor heave in mining roadway of Huipodi Coal Mine
矿业科学学报, 2020 Taking Huipodi coal mine as the engineering background, the asymmetric deformation mechanism of the mining roadway under the island coal pillar was studied by theoretical analysis, numerical simulation and field measurement, and the corresponding floor ...
Zhao Hongbao +5 more
doaj +1 more source
The Anatomical Record, EarlyView.Abstract Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and
Julia Lara Rodrigues de Souza +5 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian +6 more
wiley +1 more source