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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.
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.
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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.
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.
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 Ministry of Regional Development and Public Administration