Utjecaj udjela i duljine otpadnih staklenih vlakana na svojstva morta

master's thesis

• Title (english): Influence of proportion and length of waste glass fibres on cement mortar properties
• Author: Lucija Holub
• Mentor: Ana Baričević (mentor)
• Committee member: Ivana Banjad Pečur (predsjednik povjerenstva)
• Committee member: Ana Baričević (član povjerenstva)
• Committee member: Marija Jelčić Rukavina (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Materials); Zagreb
• Defense date and country: 2023-02-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

U sklopu diplomskog rada provedena su istraživanja utjecaja udjela i duljine otpadnih alkalno-otpornih staklenih vlakana (AR-GF) na svojstva morta. Korištena otpadna vlakna nastaju tijekom proizvodnje tehničkih tekstila za građevinski sektor. Takva vlakna nisu pogodna za daljnju primjenu te su za rad dodatno obrađena prije primjene. Vlakna su rezana na duljinu 5 i 10 mm, a za ocjenu doprinosa svojstvima morta korištena su u četiri volumna udjela: 0.2%, 0.4%, 0.6% i 0.8%. Provedena su ispitivanja utjecaja otpadnih AR-GF na svojstva u svježem i očvrsnulom stanju. Rezultati ukazuju na otpadna AR-GF vlakna ne doprinose povećanju vlačne i tlačne čvrstoće, kao ni duktilnosti ispitanih mortova. Istovremeno, pozitivan doprinos se ogleda u smanjenom autogenom skupljanju, u odnosu na referentnu mješavinu i tvornički proizvedena AR-GF vlakna, a što je primarni razlog primjene ovih vlakana u mortu visoke čvrstoće.

Abstract (english)

In this master thesis, the influence of the proportion and length of alkali-resistant glass fibres from production (AR-GF) on the properties of cement mortar was investigated. The waste fibres used are produced during the production of technical textiles for the construction sector. These fibres are not suitable for further use and were additionally prepared for this work before use. The fibres were cut to lengths of 5 and 10 mm and used in four volume proportions to evaluate the contribution to the properties of the cement mortar: 0.2%, 0.4%, 0.6% and 0.8%. The tests on the influence of the waste fibres AR-GF were carried out in the fresh and hardened state. The results show that the waste fibres AR-GF do not contribute to the increase of tensile and compressive strength and ductility of the tested mortars. At the same time, the positive contribution is reflected in lower autogenous shrinkage compared to the reference mix and the factory-produced AR-GF fibres, which is the accepted reason for using these fibres in high-strength mortars.

• Keywords: otpadna staklena vlakna; mort visoke čvrstoće; skupljanje
• Keywords (english): waste glass fibres; high strength mortar; shrinkage
• Language: croatian
• URN:NBN: urn:nbn:hr:237:077345
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-03-16 10:06:35