Results 51 to 60 of about 6,150 (216)

UTILIZATION OF FERRO-NICKEL SLAG AS FINE AGGREGATE FOR CONCRETE

Doboku Gakkai Ronbunshu, 1986
A total of eight ferro-nickel slags were studied for their possibility of being used as fine aggregate in concrete. Special emphases were placed on their effects on the freeze-thaw resistance and long-term stability of concrete. It was observed that the freeze-thaw resistance of slag concrete was generally lower than that of ordinary concrete with ...
Atsushi AKIYAMA, Yasuhiko YAMAMOTO
openaire   +2 more sources

Microstructure, Defects, and Fatigue Response of High‐Strength Tool Steels

steel research international, EarlyView.
The martensitic tool steel family is designed for use in various working environments where they are subjected to repeatedly high mechanical loads. Despite the continuous upgrade of material´s microstructures through compositional development or processing techniques, defects remain a critical factor for the tool performance by leading to fatigue ...
Katerina Chantziara, Jens Bergström, Dimitrios Nikas, Mikael Thomas Grehk   +3 more
wiley   +1 more source

Bath Vibration During Open Eye Formation in a Physical Model of a Steelmaking Ladle

steel research international, EarlyView.
Using a physical model, this study shows that vibration measurements reliably predict open eye size in steelmaking ladles, offering a practical alternative to visual monitoring. Vessel vibrations stabilize faster than the open eye, except at high frequencies near the bottom.
Mika Pylvänäinen, Juhani Nissilä, Ville‐Valtteri Visuri, Aki Sorsa, Matias Hauru, Jouni Laurila, Toni Liedes   +6 more
wiley   +1 more source

Early age shrinkage pattern of concrete on replacement of fine aggregate with industrial by-product

Journal of Radiation Research and Applied Sciences, 2016
This is an experimental work carried out to investigate early age shrinkage pattern of concrete, prepared, on 50% replacement of industrial by-product (like pond ash and granulated blast furnace slag) as fine aggregate using OPC, PPC and PSC as a binder.
R.K. Mishra, R.K. Tripathi, Vikas Dubey
doaj   +1 more source

Performance of Steel Slag as Fine Aggregate in Structural Concrete

Nigerian Journal of Technology, 2015
Suitability of using steel slag (SS) as substitute for sand in concrete was investigated. SS was collected from a dump site, crushed manually and sieved through between sieves No. 4 and 200. SS was characterized using XRF and XRD techniques. Concrete of mix ratio 1:2:4 was batched by weight with slag replacement levels of 0 to 100% of sand at 25 ...
Olonade, KA, Kadiri, MB, Aderemi, PO
openaire   +3 more sources

Toward the Application of Multiaxial Failure Criteria: Mean Stress Sensitivity of Carbide‐Rich, High‐Alloy PM‐HIP Tool Steels Under Axial and Torsional Cyclic Loading

steel research international, EarlyView.
This study quantifies axial and torsional long‐life fatigue (LLF) behavior of three carbide‐rich PM‐HIP tool steels, correlating LLF strength with intrinsic defect size and cleanliness, thereby extracting material‐specific mean stress sensitivities and Haigh diagrams.
Lennart Mirko Scholl, Frederik Tegeder, Tobias Hajeck, Alexander Bezold, Christoph Broeckmann   +4 more
wiley   +1 more source

Reducing the use of Fossil Carbon and Fuels to Defossilize the Electric Steelmaking Route: Evaluation of the Effects of Alternative C‐Bearing Materials and Hydrogen in the Electric Arc Furnace

steel research international, EarlyView.
The experiments and simulations demonstrate that, in general, alternative carbon sources can decrease fossil CO2 without adversely impacting EAF process and product. High plastics and tires ratios cause unsafe conditions and poor slag foaming. Hydrogen in EAF burners decreases CO2 but increases water vapor, which can raise the hydrogen content in ...
Ismael Matino, Orlando Toscanelli, Antonella Zaccara, Aintzane Soto Larzabal, Asier Zubero Lombardia, Jon Hermosa, Tamara Rodríguez Durán, Valentina Colla   +7 more
wiley   +1 more source

A Novel Approach to Energy Management in Electric Steelworks

steel research international, EarlyView.
Feed‐forward neural networks are exploited to estimate electric energy consumptions of the electric arc furnace and ladle furnace processes. The models are used to optimize production schedule so that more energy intensive grades are produced when the cost of energy is lower.
Valentina Colla, Stefano Dettori, Silvia Cateni, Marco Vannucci, Antonella Vignali, Claudio Mocci, Irene Dovichi, Davide Chionna, Lorenzo Vannini, Enrico Paluzzano, Costanzo Pietrosanti, Davide Onesti, Daniele Venier   +12 more
wiley   +1 more source

Reactivity of Fine Quartz in Presence of Silica Fume and Slag

Engineering, 2011
Dune sand is a very abundant material in south of Algeria. Its high silica content gives a partial pozzolanic reactivity due to its crystalline state. This paper investigates the evolution of cement hydration based on a binary addition particularly the reactivity of dune sand finely ground in the presence of an amorphous addition: silica fume or blast ...
Karima Arroudj, Abdelfetah Zenati, Mohamed Nadjib Oudjit, Abderrahim Bali, Arezki Tagnit-Hamou   +4 more
openaire   +2 more sources

Decreasing the Environmental Impact of the Electric Steelmaking Route Through Advanced Modelling Techniques

steel research international, EarlyView.
Ensemble models are adopted to estimate the sterile content of scraps arriving to the scrap yard. Feed‐forward neural networks are exploited to estimate steel composition and temperature after Ladle furnace. The models are validated on data from two steelworks very satisfactory results and are inherently transferable to other steelworks, as they are ...
Valentina Colla, Antonella Zaccara, Stefano Dettori, Laura Laid, Ismael Matino, Silvia Cateni, Teresa Annunziata Branca, Lorenzo Vannini   +7 more
wiley   +1 more source