Autogeno skupljanje alternativnih veziva na bazi crvenog mulja

undergraduate thesis

• Title (english): Autogenous shrinkage of alternative binders based on red mud
• Author: Lucija Šušak
• Mentor: Marijana Serdar (mentor)
• Committee member: Nina Štirmer (predsjednik povjerenstva)
• Committee member: Marijana Serdar (član povjerenstva)
• Committee member: Nikola Adžaga (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Materials); Zagreb
• Defense date and country: 2023-02-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

U ovom radu obrađena je tema utjecaja mineralnih dodataka na različita svojstva cementne paste/morta. Ispitivani su uzorci 5 različitih mješavina gdje se dio cementa mijenjao s različitim mineralnim dodacima (crveni mulj, vapnenac, kalcinirana glina i silikatna prašina) u različitim omjerima te su dobiveni rezultati uspoređivani s referentnom mješavinom (bez mineralnih dodataka). Provedeno je ispitivanje konzistencije testom rasprostiranja, vremena vezivanja Vicatovim uređajem, autogenog skupljanja uz pomoć Auto-Shrink- Corrugated tube uređaja te ispitivanje savojne i tlačne čvrstoće na hidrauličkoj preši. Osim eksperimentalnog djela, opisane su i karakteristike pojedinih mineralnih dodataka. Zaključeno je kako inkluzivnost mineralnih dodataka u betonu mogu rezultirati pozitivnim, ali i negativnim utjecajima na njegova svojstva ukoliko se oni pravilno ne doziraju.

Abstract (english)

This thesis deals with the topic of influence of mineral additives on different properties of concrete. Samples of 5 different mixes were tested where part of the cement was replaced with different mineral additives (red mud, limestone, calcined clay and silica fume) in different proportions, and the obtained results were compared with the reference mix (without mineral additives). The consistency of the mixture was tested using the flow table, setting time using Vicat instrument, autogenous shrinkage was measured with the Auto-Shrink-Corrugated tube device and compressive and flexural strength were tested with a hydraulic press. In addition to the experimental work, the characteristics of individual mineral supplements were also described. It was concluded that the inclusion of mineral additives in concrete can result in positive and negative impacts on its properties if they are not properly dosed.

• Keywords: mineralni dodaci; crveni mulj; vapnenac; kalcinirana glina; silikatna prašina; konzistencija; autogeno skupljanje; vrijeme vezivanja; corrugated tube; savojna čvrstoća; tlačna čvrstoća
• Keywords (english): mineral additives; red mud; limestone; calcined clay; silica fume; consistency; autogenous shrinkage; setting time; corrugated tube; flexural strength; compressive strength
• Language: croatian
• URN:NBN: urn:nbn:hr:237:386125
• 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: 2023-03-16 09:33:29