Ispitivanje otpornosti litotamnijskog vapnenca i travertina na atmosferske uvjete

undergraduate thesis

• Title (english): Testing the resilience of Lithothamnium limestone and travertine to atmospheric conditions
• Author: Marija Meklav
• Mentor: Karmen Fio Firi (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2023-09-20, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Za potrebe ovog rada, prikupljeni su uzorci litavca i litotamnijskog vapnenca iz napuštenog
kamenoloma Bizek, koji su kroz povijest bili korišteni u izgradnji građevina i spomenika na
području grada Zagreba. Uz to je prikupljen uzorak travertina tipa San Pietro Romano classico,
dobiven od kamenoklesara, koji je odabran radi njegove uloge u restauraciji Zagrebačke
katedrale. Ispitivanje litavca, litotamnijskog vapnenca i travertina na atmosferilije uključivalo
je četiri vrste testiranja; ispitivanje otpornosti na djelovanje mraza, ispitivanje otpornosti na
kristalizaciju soli, ispitivanje otpornosti upotrebom natrijevog sulfata i ispitivanje otpornosti na
kisele kiše koje je rađeno po prilagođenom Slake durability test-u. Travertin je pokazao najbolje
rezultate od sve tri vrste vapnenca, dok su se litotamijski vapnenac i litavac u većini ispitivanja
pokazali nepostojani. Ispitivanja su provedena na Institutu građevinarstva Hrvatske (IGH) i
prate službene norme za ispitivanje prirodnog kamena. Uspoređujući rezultate s relevantnom
literaturom, proizašli zaključak je da ispitivanja arhitektonsko-građevnog kamena nisu
dovoljno sveobuhvatna te da ne mogu uvijek precizno i dugoročno odrediti otpornost kamena
na utjecaj atmosferilija.

Abstract (english)

For the purposes of this paper, samples of litavac and lithothamnium limestone were collected
from the abandoned Bizek quarry, which was, throughout history, relevant for stone
excavations used in the City of Zagreb. Travertine of the San Pietro Romano classico type was
collected from a stone mason, and chosen due to its role in the restoration of the Zagreb
Cathedral. The weathering testing of litavac, lithothamnium limestone and travertine included
four types of tests; test of resistance to frost, test of resistance to salt crystallization, test of
resistance using sodium sulfate and test of resistance to acid rains, which was done according
to the adjusted Slake durability test. Travertine showed the best results out of all three types of
limestone, while lithothamnium limestone and litavac proved to be unstable in most tests. The
tests were carried out at the Croatian Institute of Civil Engineering (IGH), following the official
standards for testing natural stone. Comparing the results with the relevant literature, the
resulting conclusion is that the tests for architectural-building stone are not always
comprehensive enough and that they cannot accurately determine long-term resistance of the
stone to atmospheric conditions.

• Keywords: litotamnijski vapnenac; litavac; travertin; baština; kisele kiše; utjecaj atmosferilija
• Keywords (english): lithothamnium limestone; litavac; travertine; heritage; acid rains; atmospheric influence
• Language: croatian
• URN:NBN: urn:nbn:hr:217:254305
• Study programme: Title: Environmental Sciences; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) struke znanosti o okolišu (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-09-21 11:02:08