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undergraduate thesis
Izrada uređaja za mjerenje raspodjele veličina čestica cementa
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. urn:nbn:hr:149:741034
Kocijan, Sara
University of Zagreb
Faculty of Chemical Engineering and Technology

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

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Kocijan, S. (2020). Izrada uređaja za mjerenje raspodjele veličina čestica cementa (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:741034

Kocijan, Sara. "Izrada uređaja za mjerenje raspodjele veličina čestica cementa." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:741034

Kocijan, Sara. "Izrada uređaja za mjerenje raspodjele veličina čestica cementa." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:741034

Kocijan, S. (2020). 'Izrada uređaja za mjerenje raspodjele veličina čestica cementa', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 17 June 2024, https://urn.nsk.hr/urn:nbn:hr:149:741034

Kocijan S. Izrada uređaja za mjerenje raspodjele veličina čestica cementa [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2020 [cited 2024 June 17] Available at: https://urn.nsk.hr/urn:nbn:hr:149:741034

S. Kocijan, "Izrada uređaja za mjerenje raspodjele veličina čestica cementa", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:149:741034

Metadata
TitleIzrada uređaja za mjerenje raspodjele veličina čestica cementa
Title (english)Design of a device for measuring the size distribution of cement particles
AuthorSara Kocijan
MentorJuraj Šipušić (mentor)
Committee memberJuraj Šipušić (predsjednik povjerenstva)
Committee memberKrunoslav Žižek (član povjerenstva)
Committee memberVanja Kosar (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2020-09-25, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Napravljena je aparatura za određivanje raspodjele veličine čestica na temelju mjerenja mase sedimentiranih čestica u stupcu suspenzije. Tijekom eksperimenta ispitivane su tri vrste uzoraka: kalcit CaCO3, gibsit Al(OH)3 i talk Mg3Si4O10(OH)2, pripravljenih kao vodene suspenzije masene koncentracije čestica do 12 g/dm^3. Analitičkom vagom povezanom s računalom mjeri se povećanje mase na tanjuriću istaloženih čestica u ovisnosti o vremenu. Stokesov zakon primjenjiv je samo za niske vrijednosti Reynoldsove značajke (Re<0.25) i određuje brzinu nesmetane sedimentacije čestica. Za obradu rezultata (krivulja ovisnosti mase istaloženih čestica o vremenu) koriste se dvije matematičke metode: numerička aproksimacija prve derivacije diskretnih podataka i analitička derivacija pretpostavljenog matematičkog modela. Obradom rezultata eksperimenta (kumulativna taložna krivulja) određuje se veličina čestica veća od ekvivalentnog Stokesovog promjera.
Abstract (english)
Laboratory apparatus for determination of the particle size distribution was made based on the measurement of the mass of sedimented particles in the suspension column. During the experiment, three types of samples were tested: calcite CaCO3, gibbsite Al(OH)3 and talc Mg3Si4O10(OH)2, prepared as aqueous suspensions with a mass concentration of particles up to 12 gdm^-3. A computer-connected analytical balance measures the increase in mass on a balancing pan of precipitated particles as a function of time. Stokes' law is applicable only to low values of the Reynolds number (Re <0.25) and determines the rate of undisturbed sedimentation of particles. Two mathematical methods are used to process the results (mass of precipitated particles in time): numerical approximation of the first derivation of discrete data and analytical derivation of the assumed mathematical model. By processing the results of the experiment (cumulative sediment curve), the particle size larger than the equivalent Stokes diameter are determined.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:741034
Study programmeTitle: Materials Science and Engineering - Undergraduate study
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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Created on2023-05-04 11:21:57