but.committee	prof. RNDr. Karel Maca, Dr. (předseda) Ing. Ivana Perná, Ph.D. (člen) doc. Ing. Václav Pouchlý, Ph.D., Ing.Paed.IGIP (člen) Ing. Hynek Hadraba, Ph.D. (člen) prof. Ing. Martin Trunec, Dr. (člen)	cs
but.defence	Uchazeč přednesl obhabjobu DDP ve stanoveném rozsahu a shrnul nejdůležitější výsledky a přínosy DDP. V následující diskusi uchazeč zodpověděl uspokojivě dotazy obou oponentů a následně členů oponentní komise. Komise zkonstatovala, že na základě proběhlého oponentního řízení uchazeč splnil všechny požadavky potřebné k obhajobě DDP.	cs
but.jazyk	angličtina (English)
but.program	Fyzikální a materiálové inženýrství	cs
but.result	práce byla úspěšně obhájena	cs
dc.contributor.advisor	Dlouhý, Ivo	en
dc.contributor.author	Taveri, Gianmarco	en
dc.contributor.referee	Perná,, Ivana	en
dc.contributor.referee	Pouchlý, Václav	en
dc.date.created	2019	cs
dc.description.abstract	Buildings construction and realization of public infrastructures have always been a primary need in the human society, developing low cost and user-friendly materials which also encounter safety and durability requirements. Portland cement is the most used material in construction industry from the industrial revolution up to date, but the raising concerns related to the climate change are pushing the governments worldwide to replace it with more eco-friendly and greener materials. Geopolymers are considered to be best alternatives to Portland cement in construction industry, but issues related to cost and mechanical properties are still hindering the commercialization of this material. Geopolymer incorporating wastes is one of the solutions. Fly ash, a thermal power plant by-product, and borosilicate glass, a recycled glass from pharmaceutical vials, are suitable candidates in geopolymers activation. NMR and FTIR spectroscopies demonstrated that borates from borosilicate glass are active compounds in geopolymerization, substituting the alumina is its role, composing a B-Al-Si network never observed before. Various fly ash and borosilicate glass weight contents were studied in terms of mechanical properties (compression test, 3-point bending test). It was found that fly ash 55 wt.% and borosilicate 45 wt.% composition activated in 13 M NaOH solution holds the best compressive and flexural strength (45 and 4 MPa respectively), 25% stronger than similar counterparts found in literature. Cellulose fibres in different weight contents were dispersed into the geopolymeric paste to produce geopolymer composites, with the aim to render the material more suitable for structural applications. 3-point bending test showed an improvement of the flexural strength of about 165% (12 MPa), while the chevron notch method displayed a fracture toughness of 0.7 MPam1/2, in line with the results of geopolymer composites found in literature. In this thesis work, fly ash was also successfully densified in 3 M NaOH solution and distilled water through a new method based on hydraulic pressure, called hydro-pressure sintering. This innovative technology involves a drastic reduction of NaOH utilization in geopolymerization, rendering the material more eco-friendly. XRD spectroscopy conducted on produced samples revealed a higher formation of crystals, most likely induced by the application of hydraulic pressure (450 MPa).	en
dc.description.abstract	Buildings construction and realization of public infrastructures have always been a primary need in the human society, developing low cost and user-friendly materials which also encounter safety and durability requirements. Portland cement is the most used material in construction industry from the industrial revolution up to date, but the raising concerns related to the climate change are pushing the governments worldwide to replace it with more eco-friendly and greener materials. Geopolymers are considered to be best alternatives to Portland cement in construction industry, but issues related to cost and mechanical properties are still hindering the commercialization of this material. Geopolymer incorporating wastes is one of the solutions. Fly ash, a thermal power plant by-product, and borosilicate glass, a recycled glass from pharmaceutical vials, are suitable candidates in geopolymers activation. NMR and FTIR spectroscopies demonstrated that borates from borosilicate glass are active compounds in geopolymerization, substituting the alumina is its role, composing a B-Al-Si network never observed before. Various fly ash and borosilicate glass weight contents were studied in terms of mechanical properties (compression test, 3-point bending test). It was found that fly ash 55 wt.% and borosilicate 45 wt.% composition activated in 13 M NaOH solution holds the best compressive and flexural strength (45 and 4 MPa respectively), 25% stronger than similar counterparts found in literature. Cellulose fibres in different weight contents were dispersed into the geopolymeric paste to produce geopolymer composites, with the aim to render the material more suitable for structural applications. 3-point bending test showed an improvement of the flexural strength of about 165% (12 MPa), while the chevron notch method displayed a fracture toughness of 0.7 MPam1/2, in line with the results of geopolymer composites found in literature. In this thesis work, fly ash was also successfully densified in 3 M NaOH solution and distilled water through a new method based on hydraulic pressure, called hydro-pressure sintering. This innovative technology involves a drastic reduction of NaOH utilization in geopolymerization, rendering the material more eco-friendly. XRD spectroscopy conducted on produced samples revealed a higher formation of crystals, most likely induced by the application of hydraulic pressure (450 MPa).	cs
dc.description.mark	P	cs
dc.identifier.citation	TAVERI, G. Geopolymers Incorporating Wastes and Composites Processing [online]. Brno: Vysoké učení technické v Brně. Fakulta strojního inženýrství. 2019.	cs
dc.identifier.other	113904	cs
dc.identifier.uri	http://hdl.handle.net/11012/180701
dc.language.iso	en	cs
dc.publisher	Vysoké učení technické v Brně. Fakulta strojního inženýrství	cs
dc.rights	Standardní licenční smlouva - přístup k plnému textu bez omezení	cs
dc.subject	Geopolymers	en
dc.subject	polycondensation	en
dc.subject	composite materials	en
dc.subject	mechanical properties	en
dc.subject	fracture toughness	en
dc.subject	hydro-pressure sintering	en
dc.subject	spectroscopy.	en
dc.subject	Geopolymers	cs
dc.subject	polycondensation	cs
dc.subject	composite materials	cs
dc.subject	mechanical properties	cs
dc.subject	fracture toughness	cs
dc.subject	hydro-pressure sintering	cs
dc.subject	spectroscopy.	cs
dc.title	Geopolymers Incorporating Wastes and Composites Processing	en
dc.title.alternative	Geopolymers Incorporating Wastes and Composites Processing	cs
dc.type	Text	cs
dc.type.driver	doctoralThesis	en
dc.type.evskp	dizertační práce	cs
dcterms.dateAccepted	2019-08-19	cs
dcterms.modified	2019-10-04-10:40:35	cs
eprints.affiliatedInstitution.faculty	Fakulta strojního inženýrství	cs
sync.item.dbid	113904	en
sync.item.dbtype	ZP	en
sync.item.insts	2025.03.27 14:43:44	en
sync.item.modts	2025.01.15 19:04:56	en
thesis.discipline	Fyzikální a materiálové inženýrství	cs
thesis.grantor	Vysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrství	cs
thesis.level	Doktorský	cs
thesis.name	Ph.D.	cs

Geopolymers Incorporating Wastes and Composites Processing

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