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The article examined the influence of two additives, which are post-production waste from metallurgical processes, on the basic properties of cement mortars. Sludge and slag waste were used for testing. Both wastes were examined in terms of their chemical composition using a spectrometer, their specific density and grain composition were determined. As part of the tests, a series of standard mortars...
This article presents the influence of ashes generated in the combustion processes of various types of biomasses on the durability (resistance to freezing and thawing after 25 cycles) of cement mortars. Three types of ashes were used for the tests: two fly ashes and one bottom ash. These differ in chemical composition and microstructure in the amounts of 10%, 20%, and 30% of the cement mass and are...
Niemetaliczne zbrojenie FRP jest coraz powszechniej stosowane w Polsce, ze względu na zastosowany materiał do ich produkcji można wyróżnić: pręty szklane (GFRP - Glass Fibre Reinforced Polymers), bazaltowe (BFRP - Basalt Fibre Reinforced Polymers), aramidowe (AFRP -– Aramid Fibre Reinforced Polymers) oraz węglowe (CFRP - Carbon Fibre Reinforced Polymers). Tego typu zbrojenie charakteryzuje wysoka...
The article presents research aimed at determining the thermal properties of tent fabric and, as the final result, the value of the heat transfer coefficient of the thermal protection of a pneumatic tent. It was assumed that the thermal insulation capacity of the tent cover, consisting of two fabric layers separated by an air gap, was determined for two seasons, summer and winter. The tested material...
The paper presents issues related to the methodology of measuring soil strength parameters. The laboratory methods for determining the shear strength of soil are described, with particular emphasis on the measurement of soil strength using the direct shear method and the triaxial compression apparatus. An attempt was made to determine the impact of the research methodology on the quality of the obtained...
The paper presents the issues related to the excessive use of natural resources and the possibility of its reduction through the use of ash deposited in landfills. Two different ashes from the combustion of various types of biomass (coconut shell and sunflower) were used and compared with each other. As part of the tests, the chemical composition of the ashes used was checked and samples of cement...
This paper deals with an evaluation of a hydrometeorology data from sites of a different land use and mainly from the places with a different leaf area index. A few methods of an estimation of the Fractal Dimension of a hydrometeorology time series, which is based on the original principle of coastline length measuring, were developed. The first results indicate that developed methods are usable for...
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