Title
Uticaj dodatka fino samlevenog recikliranog stakla od katodnih cevi na svojstva cementnog maltera i betona
Creator
Grdić, Dušan 1988-
Copyright date
2019
Object Links
Select license
Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
Dozvoljavate samo preuzimanje i distribuciju dela, ako/dok se pravilno naznačava ime autora, bez ikakvih promena dela i bez prava komercijalnog korišćenja dela. Ova licenca je najstroža CC licenca. Osnovni opis Licence: http://creativecommons.org/licenses/by-nc-nd/3.0/rs/deed.sr_LATN. Sadržaj ugovora u celini: http://creativecommons.org/licenses/by-nc-nd/3.0/rs/legalcode.sr-Latn
Language
Serbian
Cobiss-ID
Theses Type
Doktorska disertacija
description
Datum odbrane: 26.02.2020.
Other responsibilities
mentor
Ristić, Nenad 1982-
član komisije
Topličić Ćurčić, Gordana 1961-
član komisije
Radonjanin, Vlastimir 1957-
član komisije
Malešev, Mirjana 1958-
član komisije
Zakić, Dimitrije 1967-
Academic Expertise
Prirodno-matematičke nauke
Academic Title
-
University
Univerzitet u Nišu
Faculty
Građevinsko-arhitektonski fakultet
Group
Katedra za materijale i konstrukcije
Alternative title
Effect of addition of finely milled recycled glass obtained from cathode tubes on the properties of cement mortar and concrete
Publisher
[D. Z. Grdić]
Format
V, 271 list
description
Biografija autora: list 271;
Bibliografija: listovi 212-223.
description
Civil engineering materials and Concrete technology
Abstract (en)
In the experimental part of the dissertation, the potential of
usage of finely milled CRT glass (<0,063 μm) in making mortar and
concrete is tested and analyzed. Eight mortar and concrete mixtures
each have been made. Pulverized glass is used to replace a share of
cement, the replacement percentage in both composites being: 5%,
10%, 15%, 20% and 35%, by mass. The adopted upper limit for
replacement of cement with glass is in accordance with the maximum
share of other mineral admixtures in CEM II cement. Also, two
batches of mortars and concretes were made with addition of 5% and
10% of CRT to total amount of cement. A comprehensive testing of
properties of fresh cement composites modified in this manner has
been conducted, as well as of mechanical strengths, rheological
characteristics and durability. Among other things, durability tests
included: freeze/thaw resistance and freeze/thaw resistance with deicing
salt, water impermeability, sulphate attack and leaching tests.
Also, a SEM and EDS analysis of mortar and concrete samples is
conducted.
The analysis and processing of the results helped form the
conclusions regarding potential of usage of CRT glass for making
mortar and concrete, and assess durability of these modified cement
composites. Finely milled cathode ray tube glass is puzzolanically
active and does not cause alkali-silicate reaction. In mortars, CRT
glass can be used for replacement up to 20% without causing any
considerable decline of compressive or flexural strengths, while
mortar retains its integrity under freeze/thaw conditions. Addition of
glass up to 10% in relation to the total amount of cement in mortar
improves physical-mechanical properties.
Mechanical strengths of concrete with a share of cement
replaced with CRT up to 15% are improved. Durability of concrete
with the same share of replacement is not compromised. is The
replacement of 20% by mass can be considered the upper limit for
replacement of a share of cement with glass in concrete mixes,
whereby the mechanical strengths of concrete are negligibly
degraded, while durability in terms of action of freeze/thaw with deicing
salt is questionable. The results the leaching test of concrete
with CRT glass confirm that these concretes do not present an
environmental challenge.
Authors Key words
katodno staklo, malteri, betoni, mehaničke čvrstoće, trajnost,
ekologija, životna sredina
Authors Key words
cathode ray tube glass, mortars, concretes, mechanical properties,
durability, environment
Classification
691:620.1(043.3)
691.555:004.353.253(043.3)
691.3:004.353.253(043.3)
Subject
T 002, T 150, T 152
Type
Tekst
Abstract (en)
In the experimental part of the dissertation, the potential of
usage of finely milled CRT glass (<0,063 μm) in making mortar and
concrete is tested and analyzed. Eight mortar and concrete mixtures
each have been made. Pulverized glass is used to replace a share of
cement, the replacement percentage in both composites being: 5%,
10%, 15%, 20% and 35%, by mass. The adopted upper limit for
replacement of cement with glass is in accordance with the maximum
share of other mineral admixtures in CEM II cement. Also, two
batches of mortars and concretes were made with addition of 5% and
10% of CRT to total amount of cement. A comprehensive testing of
properties of fresh cement composites modified in this manner has
been conducted, as well as of mechanical strengths, rheological
characteristics and durability. Among other things, durability tests
included: freeze/thaw resistance and freeze/thaw resistance with deicing
salt, water impermeability, sulphate attack and leaching tests.
Also, a SEM and EDS analysis of mortar and concrete samples is
conducted.
The analysis and processing of the results helped form the
conclusions regarding potential of usage of CRT glass for making
mortar and concrete, and assess durability of these modified cement
composites. Finely milled cathode ray tube glass is puzzolanically
active and does not cause alkali-silicate reaction. In mortars, CRT
glass can be used for replacement up to 20% without causing any
considerable decline of compressive or flexural strengths, while
mortar retains its integrity under freeze/thaw conditions. Addition of
glass up to 10% in relation to the total amount of cement in mortar
improves physical-mechanical properties.
Mechanical strengths of concrete with a share of cement
replaced with CRT up to 15% are improved. Durability of concrete
with the same share of replacement is not compromised. is The
replacement of 20% by mass can be considered the upper limit for
replacement of a share of cement with glass in concrete mixes,
whereby the mechanical strengths of concrete are negligibly
degraded, while durability in terms of action of freeze/thaw with deicing
salt is questionable. The results the leaching test of concrete
with CRT glass confirm that these concretes do not present an
environmental challenge.
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