Results 71 to 80 of about 624,198 (298)

Influence of sawdust particle size on fired clay brick properties

Materiales de Construccion, 2020
This study investigates the effect of adding different size fractions of the same pore forming agent (sawdust) on the material’s compressive strength and heat transfer. The samples were dry pressed and fired at high temperature inside an oven.
G. Thalmaier, N. Cobîrzan, A. A. Balog, H. Constantinescu, M. Streza, M. Nasui, B. V. Neamtu   +6 more
doaj   +1 more source

Interaction of Ladle Slag With Varying SiO2 Content and Recyclate‐Based MgO–C Refractories

Advanced Engineering Materials, EarlyView.
Ladle slags (CaO/Al2O3 = 1) with 1–20 wt% SiO2 were investigated in contact with industrial MgO–C refractories fabricated from fresh magnesia and 50 wt% recyclate. The sessile drop method at 1600°C reveals intensive gas formation, delayed slag infiltration in recyclate‐based samples, and, under high‐SiO2 slag, formation of a dense MgAl2O4‐rich ...
Anton Yehorov, Eldar Salpagarov, Anhelina Mospan, Till Manon Jannis Stadtmüller, Thomas Schemmel, Christos Georgios Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

Advanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller, Florian Kerber, Kirsten Moritz, Steffen Dudczig, Konstantin Kraushaar, Thomas Schemmel, Jana Hubálková, Patrick Gehre, Christos G. Aneziris   +8 more
wiley   +1 more source

Weakly Bonded Water in Interstitial Sites: A Source of Inaccuracy in Rehydroxylation Dating

Applied Sciences
The rehydroxylation (RHX) dating technique offers a promising method for determining the ages of ceramic materials, leveraging the time-dependent mass gain from water reabsorption after high-temperature firing.
Marco Martini, Anna Galli, Laura Panzeri, Francesco Maspero   +3 more
doaj   +1 more source

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories

Advanced Engineering Materials, EarlyView.
A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi, Stephan Roth, Christos G. Aneziris, Bjoern Kiefer   +3 more
wiley   +1 more source

Baseline utilisation of specialist disability services in Ireland. ESRI Working Paper No.644 December 2019 [PDF]

, 2019
The objective of this paper is to analyse the data on specialist disability services available in Ireland. The paper provides a baseline utilisation profile of selected services which can be used to project future service demand and expenditure.
Brick, Aoife, Keegan, Conor, Wren, Maev-Ann   +2 more
core  

Entropy of the FRW cosmology based on the brick wall method

, 2008
The brick wall method in calculations of the entropy of black holes can be applied to the FRW cosmology in order to study the statistical entropy. An appropriate cutoff satisfying the covariant entropy bound can be chosen so that the entropy has a ...
't Hooft, 't Hooft, Akbar, Bak, Bekenstein, Bekenstein, Bekenstein, Bousso, Cai, Cai, Cai, Carroll, Demers, Edwin J. Son, Fischler, Ghosh, Hawking, Hawking, Hayward, Hayward, He, Ho, Jacobson, Jacobson, Kim, Kreuzer, Liu, Misner, Mukohyama, Myungseok Yoon, Sheykhi, Susskind, Wontae Kim, Xiang, Zhou, Zhu   +35 more
core   +1 more source

Production of MgO/TiC Composites From MgO‐C Recyclates Using Spark Plasma Sintering

Advanced Engineering Materials, EarlyView.
Using the spark plasma sintering technique, MgO/TiC composites are manufactured from recycled MgO‐C refractories stemming from the steel production that were mixed with titanium powder. This article shows, how the size of the Ti grains and their distribution in the powder mixture affect the local carbon concentration in TiC.
Jiayan Yu, Christian Schimpf, Stefan Martin, David Rafaja   +3 more
wiley   +1 more source

Acquisitions: Walmart vs Amazon [PDF]

, 2018
The retail industry is in the process of undergoing major change. Historically big box brick and mortar strategies have dominated, but this is changing in the age of impatience and instant gratification.
Sims, Scott
core   +2 more sources