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undergraduate thesis
Usporedba koeficijenta difuzije cementne paste s različitim sastavom veziva
Zagreb: University of Zagreb, Faculty of Civil Engineering, 2021. urn:nbn:hr:237:437591
Krakan, Marijana
University of Zagreb
Faculty of Civil Engineering
Materials

Institutional repository: Repository of the Faculty of Civil Engineering, University of Zagreb

Cite this document

Krakan, M. (2021). Usporedba koeficijenta difuzije cementne paste s različitim sastavom veziva (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Civil Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:237:437591

Krakan, Marijana. "Usporedba koeficijenta difuzije cementne paste s različitim sastavom veziva." Undergraduate thesis, University of Zagreb, Faculty of Civil Engineering, 2021. https://urn.nsk.hr/urn:nbn:hr:237:437591

Krakan, Marijana. "Usporedba koeficijenta difuzije cementne paste s različitim sastavom veziva." Undergraduate thesis, University of Zagreb, Faculty of Civil Engineering, 2021. https://urn.nsk.hr/urn:nbn:hr:237:437591

Krakan, M. (2021). 'Usporedba koeficijenta difuzije cementne paste s različitim sastavom veziva', Undergraduate thesis, University of Zagreb, Faculty of Civil Engineering, accessed 23 November 2024, https://urn.nsk.hr/urn:nbn:hr:237:437591

Krakan M. Usporedba koeficijenta difuzije cementne paste s različitim sastavom veziva [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Civil Engineering; 2021 [cited 2024 November 23] Available at: https://urn.nsk.hr/urn:nbn:hr:237:437591

M. Krakan, "Usporedba koeficijenta difuzije cementne paste s različitim sastavom veziva", Undergraduate thesis, University of Zagreb, Faculty of Civil Engineering, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:237:437591

Metadata
TitleUsporedba koeficijenta difuzije cementne paste s različitim sastavom veziva
Title (english)Comparison of chloride diffusion of cement paste with different binder composion
AuthorMarijana Krakan
MentorMarijana Serdar (mentor)
MentorKristina Ana Škreb (komentor)
Committee memberIvan Gabrijel (predsjednik povjerenstva)
Committee memberMarijana Serdar (član povjerenstva)
Committee memberKristina Ana Škreb (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Civil Engineering
(Materials)
Zagreb
Defense date and country2021-09-07, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Civil Engineering
Abstract
Koeficijentom difuzije klorida definirana je otpornost betona prodoru klorida u morskom okolišu. Kod kemijskih mehanizama degradacije, u fokus dolazi problem difuzije klorida u cementnoj pasti. Osnovni cilj ovoga rada je istražiti povezanost koeficijenta difuzije dobivenog mini migracijom s kemijskim parametrima korištenih materijala. Korišteno je sedam mješavina uključujući obični Portland cement, te mješavine sa zamjenama cementa letećim pepelom, letećim pepelom i vapnencem, glinom, glinom i vapnencem te kvarcom. Statističkim metodama uspostavljene su korelacije između dobivenih rezultata. Prema dobivenim rezultatima i provedenim statističkim metodama, najpovoljniju vrijednost prodora klorida na razini cementne paste ostvaruje mješavina sa zamjenom dijela cementa s 30% letećeg pepela i 15% vapnenca, dok su nakon ove mješavine po otpornosti na prodor klorida mješavine s 30% gline. Pravilnim odabirom masenih udjela pojedinih kemijskih sastojaka u mješavinama može postići povoljnija vrijednost koeficijenata difuzije – kao što je slučaj kod pucolana. Degradacija betona u agresivnom okolišu ne može se u potpunosti spriječiti, ali pravilnim odabirom udjela zamjene cementa u mješavini moguće je utjecati na poboljšanje otpornosti materijala na agresivne čimbenike iz okoliša, te time postići veću trajnost konstrukcija tijekom njihovog uporabnog vijeka.
Abstract (english)
The resistance of concrete to chloride penetration in the marine environment is defined by the chloride diffusion coefficient. In chemical mechanisms of degradation, the focus comes on the problem of chloride diffusion in cement paste. The main goal of this study was to investigate the relationship between the diffusion coefficient and the chemical and physical parameters of the materials used. Seven mixes with different binder composition were used, including ordinary Portland cement, mixtures with replacement of cement with fly ash, fly ash and limestone, clay, clay and limestone and quartz. The most favorable value of chloride penetration at the level of cement paste is achieved by replacement of cement with 30% fly ash and 15% limestone, and by replacement of cement with 30% of clay. Present study also showed that by using the correct choice of mass fractions of individual chemical constituents in mixtures a more favorable value of diffusion coefficients can be achieved. The concrete degradation in aggressive environment can never be fully prevented, but by proper selection of the proportion of cement replacement in mixture it is possible to improve material resistance to aggressive environmental factors, and thus achieve greater durability of structures throughout their service life.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:237:437591
Study programmeTitle: Civil Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka građevinarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka građevinarstva)
Type of resourceText
File originBorn digital
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Created on2022-03-31 08:01:11