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master's thesis
Hidratacija cementa s dodatkom pepela dobivenog od spaljivanja drvne biomase
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. urn:nbn:hr:149:196484
Turk, Zita
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

Turk, Z. (2015). Hidratacija cementa s dodatkom pepela dobivenog od spaljivanja drvne biomase (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:196484

Turk, Zita. "Hidratacija cementa s dodatkom pepela dobivenog od spaljivanja drvne biomase." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. https://urn.nsk.hr/urn:nbn:hr:149:196484

Turk, Zita. "Hidratacija cementa s dodatkom pepela dobivenog od spaljivanja drvne biomase." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. https://urn.nsk.hr/urn:nbn:hr:149:196484

Turk, Z. (2015). 'Hidratacija cementa s dodatkom pepela dobivenog od spaljivanja drvne biomase', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:196484

Turk Z. Hidratacija cementa s dodatkom pepela dobivenog od spaljivanja drvne biomase [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2015 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:149:196484

Z. Turk, "Hidratacija cementa s dodatkom pepela dobivenog od spaljivanja drvne biomase", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:149:196484

Metadata
TitleHidratacija cementa s dodatkom pepela dobivenog od spaljivanja drvne biomase
Title (english)Cement hydration with addition of ash from biomass combuston
AuthorZita Turk
MentorNevenka Vrbos (mentor)
Committee memberNevenka Vrbos (predsjednik povjerenstva)
Committee memberJuraj Šipušić (član povjerenstva)
Committee memberEmi Govorčin Bajsić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2015-07-06, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Basic Technical Sciences
Materials
Abstract
U ovom radu istražena je kemija hidratacije cementa uz dodatak letećeg pepela koji nastaje kao nusprodukt pri spaljivanju drvne biomase. Leteći pepeo sadrži relativno veliki udio slobodnog kalcij oksida (CaO), larnita (β-C2S) i brownmillerita (C4AF), minerala karakterističnih za portland cement. S ciljem priprave novih ekoloških veziva istražen je utjecaj dodatka letećeg pepela na hidrataciju i svojstva pripravljenih cementnih materijala metodama XRD, TGA i kalorimetrije te je ispitana konzistencija i volumna postojanost cementne paste. Utvrđeno je da hidratacijom čistog pepela nastaje uglavnom C4AHx, a smanjenje udjela Ca(OH)2 ukazuje na hidratnu i pucolansku reaktivnost pepela. Kod hidratacije cementa maksimum udjela Ca(OH)2 postiže se pri sedmom danu, dok s dodatkom pepela, dolazi do smanjenja količine Ca(OH)2 nakon sedam dana hidratacije uslijed pucolanske reakcije. Rezultati ukazuju na moguću oporabu i korištenje pepela biomase u cementnim materijalima što doprinosi smanjenju uporabe prirodnih sirovina i manjem utjecaju na okoliš.
Abstract (english)
This work investigates chemistry of cement hydration with addition of fly ash from biomass combustion. Fly ash contains a relatively large part of free calcium oxide (CaO), larnite (β-C2S), and brownmillerite (C4AF), minerals found in portland cement. Hydration and properties of new ecological cement binders prepared with fly ash addition had been investigated by X-ray diffraction (XRD), thermogravimetric analysis (TGA) and calorimetry. Consistency and volume stability of cement paste were also investigated. It was found that pure ash hydration produces mainly C4AHx and reduced content of Ca(OH)2 indicates pozzolanic and hydraulic reactivity of the ash. In case of pure cement hydration the Ca(OH)2 content reaches its maximum on the 7th day. After seven days the reduction of Ca(OH)2 content is a result of a chemical reaction with pozzolanic active ingredients present in already mixed cement. The results indicate to the possibility of using the ash from biomass in new ecological cement binders, which contributes to a lower use of natural raw materials and lower impact on the environment.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:196484
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
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2016-12-06 09:43:33