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Title: INFLUENCE OF ELEVATED TEMPERATURE ON THE EARLY AGE PROPERTIES OF CEMENT MORTAR WITH ZEOLITE POWDER
INFLUENCE OF ELEVATED TEMPERATURE ON THE EARLY AGE PROPERTIES OF CEMENT MORTAR WITH ZEOLITE POWDER

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Ionut-Ovidiu Toma; Sergiu-Mihai Alexa-Stratulat; Petru Mihai; Ana-Maria Toma; Vasile-Mircea Venghiac
10.5593/sgem2022V/6.2/s26.55
10.5593/sgem2022V/6.2
1314-2704
978-619-7603-52-1
English
22
6.2
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Green Buildings Technologies and Materials
Zeolites can either occur naturally, in volcanic rock formations, or can be synthesized in the laboratory. When ground to a fine powder, they can be successfully used as supplementary cementitious material because of their chemical composition consisting in large amounts of SiO2 and Al2O3 that react with Ca(OH)2 to produce C-S-H gels. The composition of synthetic zeolites can be tailored to suit the purpose of their use in cementbased mortar and concrete and they can be produced from a variety of sources and at much lower energy costs than Portland cement. The use of zeolites in cement-based construction materials has led to improved mechanical and durability properties. The paper presents the preliminary results on using zeolites as supplementary cementitious material in mortar and the influence of elevated temperatures on the early age mechanical properties. The main parameters of the research were the replacement percentage of Portland cement by zeolite powder (10% and 20%, by volume of cement) as well as different temperature values (100°C, 150°C and 200°C). Standard 40?40?160 mm mortar prisms were cast and cured in water for 14 days before being subjected to elevated temperatures in an oven for 4 hours then left to gradually cool until they reached the room temperature. A control mix consisting of rapid hardening Portland cement was also cast and served as reference in the experimental program. The obtained results are presented in terms of density of the mortar mix, flexural and compressive strength.
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The results presented in this paper were obtained as part of the PN-III-P2-2.1-PED-2021- 0677 research grant “Sustainable Concrete for Energy Efficient Buildings” funded by Executive Agency for Higher Education, Research, Development and Innovation Funding – UEFISCDI.
conference
https://doi.org/10.5593/sgem2022V/6.2/s26.55
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 06-08 December, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
429-436
06-08 December, 2022
website
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zeolite powder, supplementary cementitious material, elevated temperature, flexural strength, compressive strength