Utjecaj pepela drvne biomase na normiranu konzistenciju i vrijeme vezivanja vapnenih veziva

undergraduate thesis

• Title (english): Influence of wood biomass ash on standard consistency and setting time of lime binders
• Author: Luka Valentić
• Mentor: Nina Štirmer (mentor)
• Committee member: Ivana Banjad Pečur (predsjednik povjerenstva)
• Committee member: Bojan Milovanović (član povjerenstva)
• Committee member: Nina Štirmer (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Materials); Zagreb
• Defense date and country: 2022-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

U radu je analiziran utjecaj pepela drvne biomase (PDB) različitog podrijetla i udjela na normiranu konzistenciju te početak i kraj vezivanja vapnenih pasti pri čemu vezivo čini prirodno hidraulično vapno i miješani pepeo drvne biomase. U uvodnom dijelu opisan je utjecaj PDB-a na svojstva vapnenih mješavina, a u eksperimentalnom dijelu rada određena je količina vode potrebna za postizanje normirane konzistencije te početak i kraj vezivanja vapnenih pasti. Ispitivanja su provedena prema normi HRN EN 459-2, probnim penetracijama na vapnenim pastama s različitim vrstama i udjelima PDB-a.
Također je određena nasipna gustoća vapna i PDB-a u rastresitom stanju, sadržaj slobodne vode u vezivu te distribucija veličine čestica vapnenih veziva sijanjem pomoću strujanja zraka.

Abstract (english)

In the work, the influence of wood biomass ash (WBA) of different origins and proportions on the standard consistency and the initial and final setting time of lime pastes was investigated, with the binder consisting of natural hydraulic lime and mixed wood biomass ash. In the introductory part, the influence of WBA on the properties of lime mixtures is described, and in the experimental part of the work, the amount of water required to achieve the standard consistency and the initial and final setting time of lime pastes is determined. The tests were carried out according to the standard HRN EN 459-2, by testing penetrations on lime pastes with different types and proportions of WBA. In addition, the bulk density of lime and WBA in the loose state, the content of free water in the binder and the size distribution of the lime binder particles by air jet sieve analysis method were determined.

• Keywords: pepeo drvne mase; prirodno hidraulično vapno; početak i kraj vezivanja; normirana konzistencija
• Keywords (english): wood biomass ash; natural hydraulic lime; initial and final setting time; standard consistency
• Language: croatian
• URN:NBN: urn:nbn:hr:237:035207
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-03-28 11:35:34