Abstract: Abstract: In the article the impact of varying humidity conditions on selected strength properties of
hardened steel fibre-reinforced concrete (such as Young’s modulus and the compressive
strength of concrete) were analysed. The analysis shows that the value of the Young’s
modulus of concrete cured under 100% humidity conditions is the highest; 35% higher
compared to concrete hardening in the laboratory hall and about 18% higher than modulus
measured in the concrete samples maturing in the chamber. A much higher compressive
strength of approx. 25% was observed in samples hardening under 100% humidity conditions than in the other two environments. It was also observed that the non-uniform distribution of samples in the chamber and opening and closing the chamber during sample maturation had an impact on the dispersion of the results and due to the coefficient of variation,
results can be even worse than in free-maturing samples.
B I B L I O G R A F I ABrandt, A.M. (2008) Fibre reinforced cement-based (FRC) composites after over 40 years of development in building and civil engineering. Composite Structures, 86, 1-3, November, 3-9.
Brunarski, L. (1998) Instrukcja 194/98. Badania cech mechanicznych betonu na próbkach wykonanych w formach. Warszawa, Instytut Techniki Budowlanej.
Czajkowska, A. & Ingaldi, M. (2017) Analysis of the impact of individual phases in the building
process cycle on the environment with respect to the principles of sustainable development. IOP Conference Series Earth and Environmental Science 214, 012012
DIN 1048-1 Testing concrete
testing of fresh concrete, Deutsches Institut Fur Normung E.V.
(German National Standard), 06/01/1991.
Glinicki, M.A. (2010) Beton ze zbrojeniem strukturalnym. XXV Ogólnopolskie Warsztaty Pracy
Projektanta Konstrukcji, 2010 - 148.81.54.64.
Guo, Q., Liang, Q.Y. & Zhao, L.Q. (2013) Ecological development of building materials. Advanced
Materials Research, 712-715, 887-890.
Lee, M.K. & Barr. B.I.G. (2003) Strength and fracture properties of industrially prepared steel fibre
reinforced concrete. Cement and Concrete Composites, 25, 3, April, 321-332.
Michałowska-Maziejuk, D. & Teodorczyk, M. (2018) The use of a concrete testing machine as teaching equipment in engineering education. Aparatura Badawcza i Dydaktyczna, 23, 2, 55-61.
Nagrodzka-Godycka, K. (1999) Badanie właściwości betonu i żelbetu w warunkach laboratoryjnych.
Warszawa, Wydawnictwo Arkady.
PN-EN 12390-1:2001 Badania betonu. Część 1: Kształt. wymiary i inne wymagania dotyczące
próbek do badań i form.
PN-EN 12390-2:2001 Badania betonu część 2: Wykonanie i pielęgnacja próbek do badań wytrzymałościowych.
PN-EN 12390-4: 2001 Badania betonu Część 4: Wytrzymałość na ściskanie. Wymagania dla maszyn
wytrzymałościowych.
Raczkiewicz, W. & Kossakowski, P.G. (2019) Electrochemical diagnostics of sprayed fibre-reinforced concrete corrosion. Applied Sciences, 9(18), 3763.
Schimidheiny, S. (1992) Changing Course: A Global Business Perspective on Businessand Environment. Massachusets, The MIT Press.
Song, P.S. & Hwang, S. (2004) Mechanical properties of high-strength steel fibre-reinforced concrete.
Construction and Building Materials, 18, 9, November, 669-673. 
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