Compressive Flow
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Influence of bottom ash and red mud additions on self-leveling underlayment properties
Abstract Self-levelling underlayments (SLUs) based on Portland cement (PC) are susceptible to cracking due to drying shrinkage. The present study evaluated the influence of binder contents on systems consisting of calcium aluminate cement (CAC), PC, and a source of calcium sulfate (C$), derived from the flue gas desulfurization process (FGD), on the mechanic
Cerâmica. Publicado em: 2022
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2. Evaluation of mortars produced with Baosteel slag short flow (BSSF) steel slag as fine aggregate
Abstract The objective was to evaluate the influence of Baosteel slag short flow (BSSF) steel slag, a byproduct of a Brazilian steel mill, as a fine aggregate on the properties of fresh state and on the compressive strength of mortars. The experimental work was to characterize the BSSF steel slag and to produce simple mortars (only cement) and mixed mortars
Cerâmica. Publicado em: 2021-03
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3. Analysis of cracks and coating in iron ore pellets by digital image processing
Abstract The pelletizing process agglomerates ore fines previously considered as tailings and makes its application possible in the form of pellets. During the process, the pellets are subjected to various compressive forces and temperature changes, which cause ruptures in their surface. These ruptures (cracks) impair the performance of the pellets in the re
REM, Int. Eng. J.. Publicado em: 2020-09
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4. Production of components with plaster residue and sodium citrate: physical, mechanical, rheological analysis
Resumo A indústria da construção civil, grande influenciadora no desenvolvimento econômico e social do país, é responsável por um grande consumo de matéria prima e produção de resíduos. O gesso, em especial, apresenta crescimento expressivo, sobretudo na região Nordeste, devido ao Pólo Gesseiro do Araripe. Considerando os graves problemas de seu
Ambient. constr.. Publicado em: 2019-04
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5. Behavior of the self-compacting mortar with sugarcane bagasse ash in the fresh and hardened state
Resumo O concreto autoadensável (CAA) é um material que apresenta alta trabalhabilidade e moderada viscosidade quando comparado ao concreto convencional. Em função de suas vantagens, nas últimas décadas, o CAA vem sendo investigado e as pesquisas abordam a utilização de novos componentes em sua estrutura e a busca pela melhoria de seu desempenho, tan
Rev. IBRACON Estrut. Mater.. Publicado em: 2019-02
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6. The p38 MAPK and NF-κB Pathways are Involved in Cyclic Compressive Force-induced IL-6 Secretion in MLO-Y4 Cells
ABSTRACT We previously revealed the involvement of extracellular regulated protein kinases 1/2 (ERK1/2) in interleukin-6 (IL-6) secretion induced by cyclic compressive force (CCF) in MLO-Y4 cells. In this study, we investigated the contributions of the p38 mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) pathways to IL-6 secretion by s
Braz. arch. biol. technol.. Publicado em: 29/11/2018
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7. Effect of thermal treatment on points defects of Al-N codoped ZnO films
ABSTRACT The effect of annealing temperature on the structural properties of Al-N codoped ZnO films were studied by X-ray diffraction, photoluminescence and Raman spectroscopy. ZnO films were deposited by sputtering technique on silicon substrates at 20 ºC, Al-concentration was kept constant and N-flow was changed to 6, 12 and 15 sccm. A thermal treatment w
Matéria (Rio J.). Publicado em: 19/07/2018
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8. Characterization of Fiber Reinforced Self-Consolidating Mortars for Use in Patching Damaged Concrete
Abstract This research aims to study the effect of supplementary cementitious materials (SCMs) such as quarry dust limestone (QDL) and natural pozzolana (NP) on the performance of fiber reinforced self-consolidating repair mortars (FR-SCRMs). Based on previous optimization of QDL and NP replacement ratios, two mortar mixtures incorporating 10% QDL and 20% NP
Lat. Am. j. solids struct.. Publicado em: 2017-06
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9. Physical and Mechanical Properties of Polymer Composites with High Content of Wastes Including Boron
In this study, we studied the physical and mechanical properties of polymer composite with wastes that incorporating boron. The polymer composites were produced with epoxy based resin and wastes as mineral additive. The wastes were added to mixtures in different ratio by replacing the resin from 0 to 66% by weight. Slump-flow and viscosity tests are carried
Mat. Res.. Publicado em: 04/12/2015
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10. Extrusion-shear of AZ31 alloy billets with low temperature and high speed by using three-dimensional finite element modeling and experiments
A new kind of compound extrusion technology including direct extrusion and shears for AZ31 magnesium billets can cause plastic large deformations and high strain rates. A series of compressive tests have been done to obtain the stress-strain curves of AZ31 magnesium alloy. Three-dimensional (3D) thermo-mechanical coupled finite element modeling of forming ma
Mat. Res.. Publicado em: 28/07/2014
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11. The flow behavior modeling of as-extruded 3Cr20Ni10W2 austenitic heat-resistant alloy at elevated temperatures considering the effect of strain
In order to investigate the compressive deformation behavior of 3Cr20Ni10W2 alloy, a series of isothermal upsetting experiments were carried out in the temperature range of 1203-1403 K and strain rate range of 0.01-10 s-1 on a Gleeble-1500 thermo-mechanical simulator. The results indicate that the flow stress initially increases to a peak value and then decr
Mat. Res.. Publicado em: 18/02/2014
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12. Compressive deformation behavior modeling of AZ31 magnesium alloy at elevated temperature considering the strain effect
The true stress-strain data from isothermal hot compression tests, in the temperature range of 300-500 ºC and strain rate of 0.001-0.1s-1, were employed to study the flow behavior of AZ31 and to develop constitutive equation based on an Arrhenius-type equation. The flow stress increases with the decrease of deformation temperature and the increase of strain
Mat. Res.. Publicado em: 17/09/2013