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master's thesis
Utjecaj soli zemnoalkalijskih metala na portland cement
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. urn:nbn:hr:149:751401
Dratibi, Silvia
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

Cite this document

Dratibi, S. (2021). Utjecaj soli zemnoalkalijskih metala na portland cement (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:751401

Dratibi, Silvia. "Utjecaj soli zemnoalkalijskih metala na portland cement." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:751401

Dratibi, Silvia. "Utjecaj soli zemnoalkalijskih metala na portland cement." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:751401

Dratibi, S. (2021). 'Utjecaj soli zemnoalkalijskih metala na portland cement', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:751401

Dratibi S. Utjecaj soli zemnoalkalijskih metala na portland cement [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2021 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:149:751401

S. Dratibi, "Utjecaj soli zemnoalkalijskih metala na portland cement", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:149:751401

Metadata
TitleUtjecaj soli zemnoalkalijskih metala na portland cement
Title (english)Influence of earth alkali metal salts on portland cement
AuthorSilvia Dratibi
MentorNevenka Vrbos (mentor)
Committee memberNevenka Vrbos (predsjednik povjerenstva)
Committee memberEmi Govorčin Bajsić (član povjerenstva)
Committee memberJuraj Šipušić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2021-09-20, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Kako bi se odredio utjecaj klorida zemnoalkalijskih metala (CaCl2∙2H2O, MgCl2∙6H2O, SrCl2∙6H2O) na svojstva modificiranog hidrauličnog veziva, pripremljeni su uzorci portland cementa PC sa dodatkom ispitivanih soli u masenim udjelima od 1-5 % na masu cementa. Pripravljeni uzorci karakterizirani su mjerenjem vremena vezanja, čvrstoće na tlak i brzine razvoja topline hidratacije. Vrijeme vezanja pripravljenog materijala određeno je Vicatovim aparatom. Čvrstoća na tlak mjerena je na laboratorijskoj hidrauličnoj preši nakon 24 sata, 3 dana, 7 dana i 28 dana hidratacije u bazenima s vodom. Toplina hidratacije mjerena je u kalorimetru tijekom 60 sati. Uzorci sa 1, 2 i 5 % dodane zemnoalkalijske soli ispitani su rendgenskom difrakcijskom analizom (XRD) i karakterizirani su infracrvenom spektrometrijom s Fourirerovom transformacijom (FTIR). Provedena mjerenja pokazala su smanjenje vremena vezanja i čvrstoće na tlak s povećanjem udjela soli, a brzina razvoja topline hidratacije povećala se povećanjem udjela CaCl2∙2H2O i SrCl2∙6H2O. Povećanje udjela MgCl2∙6H2O nije značajnije utjecalo na brzinu reakcije hidratacije.
Abstract (english)
In order to investigate the influence of earth alkaline chlorides (CaCl2∙2H2O, MgCl2∙6H2O, SrCl2∙6H2O) on modified hydraulic binder's properties, samples of portland cement with 1-5 % additions of stated salts were prepared. Setting time, compressive strength and heat of hydration were measured. Setting time of the samples was measured on Vicat apparatus. Compressive strength was measured with laboratory hydraulic press after 24 hours, 3 days, 7 days and 28 days of hydration in water tank. Calorimeter was used to measure the heat development during 60 hours. Samples with 1 %, 2 % and 5 % additions were characterized by X-ray diffractometry (XRD) and Fourier transform infrared spectroscopy (FTIR). The analysis showed the acceleration of the setting time and deterioration of compressive strength for higher salt concentrations. Heat of hydration increased with the addition of CaCl2∙2H2O and SrCl2∙6H2O. The addition of MgCl2∙6H2O did not affect the hydration rate.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:751401
Study programmeTitle: Materials Science and Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
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Created on2023-04-14 11:07:52