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undergraduate thesis
Utjecaj dodatka prirodnog zeolita na specifičnu električnu provodnost portland cementnih suspenzija
završni rad
2018. urn:nbn:hr:167:043115
Seletković, Klara
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Seletković, K. (2018). Utjecaj dodatka prirodnog zeolita na specifičnu električnu provodnost portland cementnih suspenzija : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:043115

Seletković, Klara. "Utjecaj dodatka prirodnog zeolita na specifičnu električnu provodnost portland cementnih suspenzija : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:043115

Seletković, Klara. "Utjecaj dodatka prirodnog zeolita na specifičnu električnu provodnost portland cementnih suspenzija : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:043115

Seletković, K. (2018). 'Utjecaj dodatka prirodnog zeolita na specifičnu električnu provodnost portland cementnih suspenzija : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 17 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:043115

Seletković K. Utjecaj dodatka prirodnog zeolita na specifičnu električnu provodnost portland cementnih suspenzija : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2018 [cited 2024 November 17] Available at: https://urn.nsk.hr/urn:nbn:hr:167:043115

K. Seletković, "Utjecaj dodatka prirodnog zeolita na specifičnu električnu provodnost portland cementnih suspenzija : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:167:043115

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Metadata
TitleUtjecaj dodatka prirodnog zeolita na specifičnu električnu provodnost portland cementnih suspenzija : završni rad
Title (english)Influence of natural zeolite addition to specific electrical conductivity of portland cement suspension : bachelor thesis
AuthorKlara Seletković
MentorDamir Barbir (mentor)
MBZ: 307703
Committee memberPero Dabić (predsjednik povjerenstva)
Committee memberMiće Jakić (član povjerenstva)
Committee memberDamir Barbir (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2018-09-18, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu provedeno je istraživanje specifične električne provodnosti vodene suspenzije industrijskog portland cementa, uz dodatak 0, 5, 10, 15, 20, 25 i 30 mas. % zeolitnog tufa – prirodnog zeolita iz nalazišta Donje Jesenje (Krapina), prosijanog kroz standardno sito 125 μm. Konduktometrijska mjerenja provedena su u termostatu pri 20 °C, a omjer voda/kruto bio je konstantan, V/K=4. Određivanje specifične električne provodnosti provedeno je do 25 sati konduktometrijskom metodom. Dobivene krivulje nakon eksperimentalnog rada ukazuju na ovisnost specifične električne provodnosti o vremenu i dodatku zeolitnog tufa, gdje je naglašen vrh maksimalne provodnosti. Rezultati pokazuju da povećanje dodatka prirodnog zeolita uzrokuje ukupan pad vrijednosti specifične električne provodnosti i pojavu maksimuma u kasnijim vremenima hidratacije, no poslije to nije pravilo. Dodatak zeolita ne utječe na mehanizam procesa hidratacije već na kinetičke parametre i dinamiku odvijanja procesa hidratacije cementa, budući da krivulje zadržavaju sličan oblik.
Abstract (english)
In this paper, a study of the specific electrical conductivity of an aqueous suspension of the Portland cement was carried out with addition of 0, 5, 10, 15, 20, 25 and 30 wt.% of zeolite – natural zeolite from the Donje Jesenje (Krapina), sifted through 125 μm standard sifter. Conductometric measurements were carried out in a thermostat at 20 °C and at the water/cement ratio, W/C = 4. Determination of specific electrical conductivity was conducted by conductometric method up to 25 hours. The obtained curves after the experimental work indicate the dependence of the specific electrical conductance of time and the addition of the zeolite, where the peak of maximum conductivity is emphasized. The results show that the increase in the addition of natural zeolite causes a total drop in the value of specific electrical conductivity and the occurrence of the maximum in later hydration times, but after that it is not a rule. The addition of zeolite does not affect the mechanism of the hydration process but on the kinetic parameters and dynamics of the process of hydration of cement, since the curves retain a similar shape.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:043115
Study programmeTitle: Chemical Technology; specializations in: Chemical Engineering, Environmental Protection
Course: Chemical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Public noteKljučne riječi doradio knjižničar/ Key words are revised by the librarian
Created on2019-04-11 09:53:23