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214 results for “concrete”
Dataset of construction and demolition waste images: aerated autoclaved concrete (AAC), asphalt, ceramics, and concrete
<p>Image subsets: the dataset of images (RGB) of CDW materials (aerated autoclaved concrete (AAC), asphalt, ceramics, and concrete) cropped to 200x200 px. The images are annotated and split into testing and training datasets for the purposes of machine-learning models' training.</p> <p>Whole CDW fragments: images used for validation of algorithms - whole fragments placed on contrast background.</p>
Alternative Supplementary Cementitious Materials in Ultra-High Performance Concrete
<p>Ultra-high performance concrete (UHPC) is an emerging material with remarkable mechanical and durability properties that contains large amounts of cementitious materials. Silica fume is a main supplementary cementitious material (SCM) in UHPC, however, it is more expensive than cement and other SCMs, so it is often substituted with inexpensive class F fly ash. Unfortunately, future availability of fly ash is uncertain as the energy industry moves toward renewable energy. Fly ash shortages create an urgent need to find cost-effective and environmentally-friendly alternatives for fly ash. This study investigated replacing cement, fly ash, and silica fume in UHPC mixtures with ground granulated blast-furnace slag (GGBFS), metakaolin, and a natural pozzolan (pumicite). To identify acceptable UHPC mixtures (28-day compressive strength greater than 17,000 psi [120 MPa]), workability, compression, and flexural tests were conducted on all mixtures. Then, durability properties including shrinkage, frost resistance, and chloride ion permeability (rapid chloride permeability and surface resistivity tests) were evaluated for the acceptable UHPC mixtures. Results showed that 75, 100, and 40% of the fly ash in the control mixture could be replaced with pumicite, metakaolin, and GGBFS, respectively, while still producing acceptable UHPC mixtures. Flexural strengths were greater than 2000 psi (13.80 MPa) for all mixtures, which should be considered acceptable for many UHPC applications. For durability, the UHPC mixtures had shrinkage strains no greater than 406 mstrain, durability factors of at least 105, and “very low” susceptibility to chloride ion penetration. These results indicate that the durability for all of the UHPC mixtures appears to be excellent. In general, the results indicate that pumicite, metakaolin, and GGBFS are all suitable candidates to replace most or all fly ash and potentially replace some silica fume in UHPC.</p>
data on Marshall properties for asphalt mixtures containing recycled concrete aggregate
<p>these data set about Marshall stability and flow and density void analysis for asphalt mixture surface layer incorporating recycled as coarse aggregate. the data are collected during the work at the transportation lab at Baghdad University and the asphalt lab in Iben-Rushud government company.</p>
Data from: Concrete survivors: The herpetofauna of an urban green area over 100 years of increasing urbanization
<p><span>The goal of our study was to evaluate changes in the assemblage of reptiles in an urban habitat over 100 years of increasing urbanization, aiming to identify which ecological attributes allowed the persistence of species that can be found in the area today. To accomplish that, we accessed historical records in two important scientific collections for the study area and carried out fieldwork to access the current reptile assemblage in an urban green area, in São Paulo, Brazil. The dataset presented here is the result of all individuals collected in the study area between 1908 and 2019, including also the animals collected by the authors during the fieldwork carried out in 2016 and preserved in the collection. </span></p>
Literature analysis on seawater-seasand concrete
<p>This file consists of raw data (*opju format) for the figures published in the review article (Rathnarajan S, Sikora P. <i>Seawater-mixed concretes containing natural and sea sand aggregates – A review</i>. <strong>Results in Engineering </strong>(2023) 20, 101457, <a href="https://doi.org/10.1016/j.rineng.2023.101457">https://doi.org/10.1016/j.rineng.2023.101457</a>).</p><p>The origin raw data file consists of data from Figure 1 (a-c), Figure 2, Figure 5, and Figure 6. Individual worksheets with information on the number of articles published, details of binder compositions in published articles are classified, experimental data from hardened and fresh experiments in prior articles are analyzed and presented. </p><p> </p>
RK17 F00001 Concretion Stage 6
RK17 F00001 is a large concretion found during the archaeological excavation of the Rooswijk in 2017. The concretion was excavated by conservators and archaelogists in the conservation facility. In 2017 and 2018, the shipwreck of the Rooswijk, a 300 year old Dutch East India Company (VOC) ship which sank on the treacherous Goodwin Sands in January 1740 off the coast of England, was excavated by an international team of maritime archaeologists. Post-excavation work began straight after each excavation campaign, focusing on ex-situ research, the conservation and analysis of the artefacts and will continue until the end of the project. The #Rooswijk1740 project is funded and led by the Cultural Heritage Agency of the Netherlands (Ministry of Education, Science and Culture), in collaboration with project partner Historic England and UK-contractor MSDS Marine. Follow #Rooswijk1740 on social media and https://english.cultureelerfgoed.nl/topics/maritime-heritage/shipwrecks/rooswijk1740 Source: Objaverse 1.0 / Sketchfab
Concrete Factroy.
My 3D model from photos generated with photogrammetry software 3DF Zephyr v5.002 processing 388 images Source: Objaverse 1.0 / Sketchfab
Concrete Plate Wall
# This is a 3D Scan of Concrete Plates * Highpoly * Real World Scaling and Alignmend * VR Ready * Texture 4K 8-Bit PNG # -- Included -- **Datatype** * OBJ Source: Objaverse 1.0 / Sketchfab
RK17 F00001 Concretion Stage 13
RK17 F00001 is a large concretion found during the archaeological excavation of the Rooswijk in 2017. The concretion was excavated by conservators and archaelogists in the conservation facility. In 2017 and 2018, the shipwreck of the Rooswijk, a 300 year old Dutch East India Company (VOC) ship which sank on the treacherous Goodwin Sands in January 1740 off the coast of England, was excavated by an international team of maritime archaeologists. Post-excavation work began straight after each excavation campaign, focusing on ex-situ research, the conservation and analysis of the artefacts and will continue until the end of the project. The #Rooswijk1740 project is funded and led by the Cultural Heritage Agency of the Netherlands (Ministry of Education, Science and Culture), in collaboration with project partner Historic England and UK-contractor MSDS Marine. Follow #Rooswijk1740 on social media and https://english.cultureelerfgoed.nl/topics/maritime-heritage/shipwrecks/rooswijk1740 Source: Objaverse 1.0 / Sketchfab
Guerrero Unidentified Iron Concretion (2019)
A substantial but unidentified iron object from Site 2-04-8MO02343 is possibly an iron ingot or ballast block. Two short iron rods or pins are alongside it. These pieces are part of the larger deposit called Iron Objects Feature No.2, found along the east side of the site (see https://skfb.ly/6SBIJ). Model created June, 2019. Scale = 10 centimeters. Source: Objaverse 1.0 / Sketchfab
RK17 F00001 Concretion Stage 4
RK17 F00001 is a large concretion found during the archaeological excavation of the Rooswijk in 2017. The concretion was excavated by conservators and archaelogists in the conservation facility. In 2017 and 2018, the shipwreck of the Rooswijk, a 300 year old Dutch East India Company (VOC) ship which sank on the treacherous Goodwin Sands in January 1740 off the coast of England, was excavated by an international team of maritime archaeologists. Post-excavation work began straight after each excavation campaign, focusing on ex-situ research, the conservation and analysis of the artefacts and will continue until the end of the project. The #Rooswijk1740 project is funded and led by the Cultural Heritage Agency of the Netherlands (Ministry of Education, Science and Culture), in collaboration with project partner Historic England and UK-contractor MSDS Marine. Follow #Rooswijk1740 on social media and https://english.cultureelerfgoed.nl/topics/maritime-heritage/shipwrecks/rooswijk1740 Source: Objaverse 1.0 / Sketchfab
RK17 F00001 Concretion Stage 9
RK17 F00001 is a large concretion found during the archaeological excavation of the Rooswijk in 2017. The concretion was excavated by conservators and archaelogists in the conservation facility. In 2017 and 2018, the shipwreck of the Rooswijk, a 300 year old Dutch East India Company (VOC) ship which sank on the treacherous Goodwin Sands in January 1740 off the coast of England, was excavated by an international team of maritime archaeologists. Post-excavation work began straight after each excavation campaign, focusing on ex-situ research, the conservation and analysis of the artefacts and will continue until the end of the project. The #Rooswijk1740 project is funded and led by the Cultural Heritage Agency of the Netherlands (Ministry of Education, Science and Culture), in collaboration with project partner Historic England and UK-contractor MSDS Marine. Follow #Rooswijk1740 on social media and https://english.cultureelerfgoed.nl/topics/maritime-heritage/shipwrecks/rooswijk1740 Source: Objaverse 1.0 / Sketchfab
Code from: Structural design to mitigate concrete GHG emissions
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An approach to quantifying the key greenhouse gas emissions in California concrete production
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A unified approach to quantifying the key greenhouse gas emissions, air pollutant emissions, and water demand in concrete production
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Carbon capture potential and environmental impact of concrete weathering in soil
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Data from: Concrete survivors: The herpetofauna of an urban green area over 100 years of increasing urbanization
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Experimental data for 'The transfer of forces through rough surface contact in concrete'
<p>The data contained in this archive was produced within the research project described in the following thesis:<br> <em>Tirassa M. (2020). The transfer of forces through rough surface contact in concrete. Ph.D. Thesis, EPFL, Lausanne, Switzerland.</em><br> The research project was funded by the Swiss National Science Foundation through research grant 200021_169649.<br> The data relates to the topic of force transfer across concrete cracks and interfaces (rebar-to-concrete) subjected to mixed mode kinematics with constant opening angle. It comprises the measured forces (normal and tangential) and displacements (crack opening and sliding). Moreover, some of the resulting surfaces (scanned using a digital microscope) are included.</p>
Living in the concrete jungle: carnivore spatial ecology in urban parks
<p>People and wildlife are living in an increasingly urban world, replete with unprecedented human densities, sprawling built environments, and altered landscapes. Such anthropogenic pressures can affect multiple processes within an ecological community, from spatial patterns to interspecific interactions. We tested two competing hypotheses, human shields versus human competitors, to characterize how humans affect the carnivore community using multi-species occupancy models. From 2017-2020, we conducted the first camera survey of city parks in Detroit, Michigan, and collected spatial occurrence data of the local native carnivore community. Our 12,106-trap night survey captured detected data for coyotes (Canis latrans), red foxes (Vulpes vulpes), gray foxes (Urocyon cinereoargenteus), raccoons (Procyon lotor), and striped skunks (Mephitis mephitis). Overall occupancy varied across species (Ψcoyote=0.40, Ψ raccoon=0.54, Ψred fox =0.19, Ψstriped skunk =0.09). Contrary to expectations, humans did not significantly affect individual occupancy for these urban carnivores. However, co-occurrence between coyote and skunk only increased with human activity. The observed positive spatial association between an apex and subordinate pair supports the human shield hypothesis. Our findings demonstrate how urban carnivores can exploit spatial refugia and coexist with humans in the cityscape. </p>
Crack width and crack spacing in reinforced and prestressed concrete elements: database
<p>This database contains information on 31 experimental programs performed by various researchers. Each experimental program contains structural elements in which the crack width and spacing were measured. The database contains over twenty thousand data points and consists of three levels:</p> <ul> <li>Level 1: Describes the considered experimental program.</li> <li>Level 2: Describes properties of structural elements and material specimens within an experimental program.</li> <li>Level 3: Describes the loads and data points.</li> </ul> <p>The master database is queried in SQL and published as a .xlsx file. The structure of the dataset is explained in the README.</p> <p> </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.