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Pre-Stress Losses in FRP Pre-Stressed Reinforced Concrete – Subject Overview

REFERENCES 1. ACI440.4R-04 (2004). “Prestressing Concrete Structures with FRP Tendons, American Concrete Institute Committee Report. 2. CSA-S807-10 Specification for Fibre-Reinforced Polymers. Canadian Standards Association, Mississauga, Canada, 2010. 3. Fib Model Code for Concrete Structures 2010. The International Federation for Structural Concrete, 2013. 4. Fib Federation International de beton fib 2007. Bulletin 40: FRP reinforcement in RC structures. The International Federation for Structural Concrete, Lausanne, Switzerland, 2007

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An Investigation of the Mechanical Properties of Sintered Fly Ash Lightweight Aggregate Concrete (SFLWAC) with Steel Fibers

Abstract

this study investigates the fresh and mechanical performance of concrete incorporating sintered fly ash lightweight aggregates (SFLWA) both with and without steel fibers. Comparative assessments of natural aggregates with sintered fly ash aggregates were evaluated. Mix design was obtained by the IS method for M30 grade concrete, and within the natural aggregates were replaced with 20%, 40%, and 60% amounts of SFLWA. The addition of SFLWA shows an increase in the workability of the concrete. Replacement with SFLWA increases with an increase in slump value, and decreases in strength parameters. Compressive strength of 42.6 MPa was achieved with a 40% replacement of SFLWA with steel fibers. The mechanical properties such as compressive strength, split tensile strength, flexural strength, elastic modulus, and structural efficiency of SFLWAC were examined, both with and without fibers. The incorporation of fibers drastically improved the mechanical properties of the mix.

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Modification of TiN coatings by Ion Implantation

REFERENCES 1. Baojian L., Bin D., Ye T.. (2014), Influence of niobium ion implantation on the microstructure, mechanical and tribological properties of TiAlN/CrN nano-multilayer coatings, Surface and Coatings Technology , 240, 405-412. 2. Barbaszewski T., Dąbrowski M., Drwięga M., Gawlik J., Lipińska E. (1989), Implantation profiles of nitrogen and titanium in low energy bombarded high speed tool steel, Physica Status Solidi (A) Applied Research , 112(1), 347-352. 3. Gerth J., Wiklund U . (2008), The influence of metallic interlayers on

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Generation Gap Management in Restructured Metallurgical Enterprises in Poland

Abstract

This paper concerns the problem of generation gap management resulting from personnel restructuring in foundries in Poland. Structural changes to steelworks led to a sharp decline in employment caused by decreased steelworks production. New hiring was limited as a part of employment rationalisation in the steelworks sector. Such personnel policy eventually led to a generation gap. Ratios between individual age groups of employees are imbalanced at steelworks: the numbers of young personnel are low and of those aged 50+ are high. This research forecasts changes in employment levels for the 2013-2019 period, aimed at closing the generation gap. The paper consists of three parts: (1) a descriptive analysis of labor market demographics in Poland’s steel industry; (2) proposed methodology for HR management model, and (3) econometric models forecasting labor demographics in Poland’s steel industry.

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Investigation of Mechanical and Anti-Corrosion Properties of Flame Sprayed Coatings

REFERENCES 1. Zhai T., Yan R., He W., Ma H., Corrosion protection performance of Mo-incorporated 2-hydroxyphosphonoacetic acid-Zn2+ complex conversion layers on the cold-rolled steel substrate. Surface and Coatings Technology, (351) (2018) 50-59. 2. Goyal M., Kumar S., Bahadur I., Verma C., Ebenso E.E., Organic corrosion inhibitors for industrial cleaning of ferrous and non-ferrous metals in acidic solutions: a review. Journal of Molecular Liquids, (256) (2018) 565-573. 3. Marcus P., Corrosion mechanisms in theory and practice, 3th Edition, CRC

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Finite Element Modeling of Composite Concrete-Steel Columns / Numeryczne Modelowanie Zespolonych Słupów Stalowo-Betonowych

References 1. ABAQUS Analysis User’s Manual, ABAQUS, Inc., Version 6.6-1, USA 2006. 2. ABAQUS Example Problems Manual, ABAQUS, Inc., Version 6.6-1, USA 2006. 3. C.-C. Chen, N-J. Lin, Analytical model for predicting axial capacity and behavior of concrete encased steel composite stub columns, Journal of Constructional Steel Research, 62, 424-433, 2006. 4. T. Chicoine et al., Behavior and Strength of Partially Encased Composite Columns with Built-up Shapes, Journal of Structural Engineering, March

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Proposal for the Assessment of Steel Truss Reliability Under Fire Conditions

References 1. PN-EN 1993-1-2 Eurocode 3: Design of steel structures. Part 1-2: General rules - Structural fire design 2. PN-EN 1991-1-2 Eurocode 1: Action on structures. Part 1-2: General actions - Action on structures exposed to fire. 3. PN-EN 1993-1-1 Eurocode 3: Design of steel structures. Part 1-1: General rules and rules for buildings. 4. Gwoźdź M., Machowski A., The selected studies and calculations of building structures by probabilistic methods, Politechnika Krakowska, Krakow, 2011 [in

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NUMERICAL ANALYSIS OF CASTELLATED BEAM

References [1] Angelina TM, ArcelorMittal [online]. 2013 [cit. 2013-05-01]. Available from WWW: <http://www.constructalia.com/english/products/structures/steel_sections_and_merchant_bars/ cellular_and_castellated_sections/angelina_tm_castellated_steel_beam_with_sinusoidal_openi ngs >. [2] ČSN EN 1993-1-5, Eurocode 3: Design of steel structures - Part 1-5: Plated structural elements . Praha: Český normalizační institut, 56 s., 2008. [3] ČSN EN 1993-1-6, Eurocode 3: Design of steel structures - Part 1

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Cracking of High-Strength Steel Welded Joints

(2006) 19-29. 8. Fydrych D., Łabanowski J., Rogalski G.: Weldability of high strength steels in wet welding conditions. Polish Marine Research 2 (2013) 67-73. 9. ASM Handbook Volume 01: Properties and Selection: Irons, Steels, and High-Performance Alloys. ASM International. 1990 10. EN 10025-6 Hot rolled products of structural steels - Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition. 11. EN 10216-2 Seamless steel tubes for

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Update of the P100-1 Concrete Provisions

Public Administration (2012). Design code: basis of structural design. CR0/2012. Bucharest, Romania. [8] Romanian Association for Standardization (2004). Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings. SR EN1992-1-1. Bucharest, Romania. [9] Romanian Institute of Standardization (1990). Design and detailing of concrete, reinforced concrete and prestressed structural elements. STAS 10107/0-90. Bucharest, Romania. [10] Ministry of Regional Development and Public Administration

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