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Poboljšanje svojstava veziva sa velikim udelom elektrofilterskog pepela primenom postupaka mehaničke i hemijske aktivacije
Improving properties of high volume fly ash binder by mechanical and chemical activation
dc.creator | Rakić, Jelena | |
dc.creator | Baščarević, Zvezdana | |
dc.date.accessioned | 2023-03-01T08:47:49Z | |
dc.date.available | 2023-03-01T08:47:49Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 0040-2176 | |
dc.identifier.uri | http://rimsi.imsi.bg.ac.rs/handle/123456789/1741 | |
dc.description.abstract | Veziva sa velikim udelom elektrofilterskog pepela (EFP) se odlikuju dugim vremenima vezivanja i malim početnim čvrstoćama. Primenom metoda mehaničke i/ili hemijske aktivacije moguće je značajno povećati reaktivnost EFP, te poboljšati svojstva veziva. U ovom radu ispitivan je uticaj mehaničke aktivacije EFP na svojstva veziva sa 70% EFP i 30% portland cementa. Dodatno, analiziran je uticaj hemijske aktivacije veziva primenom natrijum-sulfata kao aktivatora. Primenom kombinacije postupaka mehaničke i hemijske aktivacije dobijeno je vezivo koje je imalo najveće čvrstoće u početnom periodu (do 7 dana) i najkraće vreme vezivanja. Ipak, najveću čvrstoću posle 90 dana imalo je vezivo na bazi mehanički aktiviranog EFP. | sr |
dc.description.abstract | High volume fly ash (FA) binders are characterized by long setting times and low early strength. By applying mechanical and/or chemical activation methods, it is possible to increase the reactivity of FA and improve the properties of the binder. In this paper, influence of mechanical activation of FA on the properties of binders prepared with 70% FA and 30% Portland cement was investigated. Additionally, effect of chemical activation of the binder by using sodium sulfate as activator was evaluated. The binder obtained by combining mechanical and chemical activation had the highest early strength (up to 7 days) and the shortest setting times. However, the highest strength of the binder after 90 days was obtained by applying only mechanical activation of FA. | sr |
dc.language.iso | sr | sr |
dc.publisher | Savez inženjera i tehničara Srbije | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200053/RS// | sr |
dc.relation | E!9980 "Innovative use of local by-products for environmentally friendly construction products" | sr |
dc.rights | openAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Tehnika | sr |
dc.subject | elektrofilterski pepeo | sr |
dc.subject | portland cement | sr |
dc.subject | mehanička aktivacija | sr |
dc.subject | hemijska aktivacija | sr |
dc.subject | natrijum-sulfat | sr |
dc.subject | fly ash | sr |
dc.subject | Portland cement | sr |
dc.subject | mechanical activation | sr |
dc.subject | chemical activation | sr |
dc.subject | sodium sulfate | sr |
dc.title | Poboljšanje svojstava veziva sa velikim udelom elektrofilterskog pepela primenom postupaka mehaničke i hemijske aktivacije | sr |
dc.title | Improving properties of high volume fly ash binder by mechanical and chemical activation | sr |
dc.type | article | sr |
dc.rights.license | BY | sr |
dc.citation.epage | 559 | |
dc.citation.rank | M52 | |
dc.citation.spage | 553 | |
dc.citation.volume | 5 | |
dc.identifier.doi | 10.5937/tehnika2005553R | |
dc.identifier.fulltext | http://rimsi.imsi.bg.ac.rs/bitstream/id/4404/bitstream_4404.pdf | |
dc.type.version | publishedVersion | sr |