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Atomic Weights and Isotopic Compositions for Nickel. Isotope · Relative Atomic Mass · Isotopic · Composition · Standard Atomic Weight · Notes. 28, Ni, 58 ...

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Institute of Environmental Technology, CEET, Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00, Ostrava, Czech Republic

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Centre for Advanced Innovation Technology, VSB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00, Ostrava, Czech Republic

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This work was supported by Ministry of Education, Youth and Sports of the Czech Republic via the “Institute of Environmental Technology—Excellent Research” project [Grant Number CZ.02.1.01/0.0/0.0/16_019/0000853]; the “Research on the management of waste, materials and other products of metallurgy and related sectors” project [Grant Number CZ.02.1.01/0.0/0.0/17_049/0008426]; and the SGS projects [Grant Numbers SP2022/13 and SP2022/68].

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High speed steel vs carbide vstungsten

Performance MRP is the performance automotive division of MRP Manufacturing, LLC. MRP is a trusted, top-rated seller on eBay; selling on the site since 2009 ...

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May 1, 2023 — Increased Productivity. With faster machining speeds, HSM can produce parts quicker than traditional machining methods, increasing the overall ...

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Tungstencarbide

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High speed steel vs carbide vstungstencarbide

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Sep 25, 2001 — Use the sander on the dremel to get the shape you want, then sand it with the finest grit sandpaper you can find to make it smooth, since plastic is so soft.

Each of these valence electrons can form a covalent bond to another carbon atom or to a foreign atom. The key to the polymer structure is that two carbon ...

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Fly ash and granulated blast-furnace slag can be considered "multifunctional waste." This study is focused on properties of a non-cement binder prepared from slag and fly ash activated by solid alkali activator. Fly ash was milled (2.5, 5.0, and 7.5 min) in order to increase its reactivity, and particle size distribution, specific surface area, and grain morphology were determined for all milled FA samples. Two GBFS + FA mixtures (70:30 and 85:15 w/w) were studied. Prepared mixtures were activated by solid alkali activator (Na2SiO3). Optimal weight ratios were calculated for CaO, SiO2, and Al2O3 components. Properties of the mixtures were studied in dependence on the GBFS:FA mass ratio and FA milling time (0–7.5 min). After 2 and 28 days of hydration, compressive strength of all mixtures exceeded 20 and 60 MPa, respectively. The 85:15 ratio led to generally higher compressive strength 108.3 MPa was reached after 90 days using FA milled for 7.5 min. Corrosion resistance was tested by exposing mixtures to distilled water, 0.5% HCl, and 3% Na2SO4 for 65 days, and evaluated by measuring changes in CS. Also the corrosion resistance was found higher (Na2SO4) than and comparable (HCl, water) to the 70:30 ratio. This study aims to show that GBFS + FA mixtures (70:30 and 85:15 w/w) activated by solid Na2SiO3 can achieve high CS and good corrosion resistance.

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Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Puertas F, de Gutiérrez R, Fernández-Jiménez A, Delvasto S, Maldonado J (2002) Alkaline cement mortars. Chemical resistance to sulfate and seawater attack. Mater Constr 52(267):55–71. https://doi.org/10.3989/mc.2002.v52.i267.326

Hassan A, Arif M, Shariq M (2019) Use of geopolymer concrete for a cleaner and sustainable environment—a review of mechanical properties and microstructure. J Clean Prod 223:704–728. https://doi.org/10.1016/j.jclepro.2019.03.051

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Palomo A, Krivenko PV, Garcia-Lodeiro L, Kavalerova E, Maltseva O, Fernández-Jiménez A (2014) A review on alkaline activation: new analytical perspectives. Mater Construct. https://doi.org/10.3989/mc.2014.00314

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Vargas AS, Molin DC, Vilelac ACF, da Silva FJ, Pavão B, Veit H (2011) The effects of Na2O/SiO2 molar ratio, curing temperature and age on compressive strength, morphology and microstructure of alkali-activated fly ash-based geopolymers. Cem Concr Compos 33(6):653–660. https://doi.org/10.1016/j.cemconcomp.2011.03.006

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Rashad AM (2014) A comprehensive overview about the influence of different admixtures and additives on the properties of alkali-activated fly ash. Mater Des 53:1005–1025. https://doi.org/10.1016/j.matdes.2013.07.074

Pacheco-Torgal F, Castro-Gomes J, Jalali S (2008) Alkali-activated binders: a review: Part 1. Historical background, terminology, reaction mechanisms and hydration products. Constr Build Mater 22(7):1305–1314. https://doi.org/10.1016/j.conbuildmat.2007.10.015

Huseien GF, Mohd Sam AR, Alyousef R (2020) Texture, morphology and strength performance of self-compacting alkali-activated concrete: role of fly ash as GBFS replacement. Constr Build Mater 270:121368. https://doi.org/10.1016/j.conbuildmat.2020.121368

Alrefaei Y, Wang YS, Dai JG (2021) Effect of mixing method on the performance of alkali-activated fly ash/slag pastes along with polycarboxylate admixture. Cem Concr Compos 117:103917. https://doi.org/10.1016/j.cemconcomp.2020.103917

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Komljenović M, Baščarević Z, Marjanović N, Miladinović Z, Petrović R (2015) The influence of fly ash characteristics and reaction conditions on strength and structure of geopolymers. Constr Build Mater 94:361–370. https://doi.org/10.1016/j.conbuildmat.2015.07.014

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Oderji SY, Chen B, Ahmad MR, Shah SFA (2009) Fresh and hardened properties of one-part fly ash-based geopolymer binders cured at room temperature: effect of slag and alkali activators. J Clean Prod 225:1–10. https://doi.org/10.1016/j.jclepro.2019.03.290

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Department of Thermal Engineering, Faculty of Materials Science and Technology, Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00, Ostrava, Czech Republic

Komljenović M, Baščarević Z, Bradić V (2010) Mechanical and microstructural properties of alkali-activated fly ash geopolymers. J Hazard Mater 181(1–3):35–42. https://doi.org/10.1016/j.jhazmat.2010.04.064

Have fun decorating journals, projects, and more with the Tiny Mills, Woodland Creatures Animal Stampers. This set of 12 stampers features cute woodland ...

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All times are GMT -4. The time now is 11:16 AM. All CNCzone.com Content - Copyright © 2019 - All Rights Reserved CNC Machines,CAD/CAM,Milling Machines,Lathes,Classifieds, Lasers,Engraving,woodworking,MetalWorking,Industrial Equipment, Manufacturing technolgies

European Norm EN 196-1: Methods of testing cement. Part 1: determination of strength, Czech Office for Standards, Metrology and Testing, Czech Republic, 2016

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High speed steel vs carbidereddit

Ovčačíková, H., Tokarský, J., Maierová, P. et al. Effect of Mass Ratio and Milling on Compressive Strength and Corrosion Resistance of Blast-Furnace Slag/Fly Ash Geopolymer Activated by Solid Alkali Activator. J. Sustain. Metall. 8, 1961–1974 (2022). https://doi.org/10.1007/s40831-022-00618-5

Luukkonen T, Abdollahnejad Z, Yliniemi J, Kinnunen P, Illikainen M (2018) Comparison of alkali and silica sources in one-part alkali-activated blast furnace slag mortar. J Clean Prod 187:171–179. https://doi.org/10.1016/j.jclepro.2018.03.202

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Hossain MM, Karim MR, Hossain MK, Islam MN, Zain MFM (2015) Durability of mortar and concrete containing alkali-activated binder with pozzolans: a review. Constr Build Mater 93:95–109. https://doi.org/10.1016/j.conbuildmat.2015.05.094