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Naslov:Potential reduction of concrete deterioration through controlled DEF in hydrated concrete
Avtorji:ID Lubej, Samo (Avtor)
ID Radosavljević, Milan (Avtor)
Datoteke:URL http://www.academicjournals.org/IJPS/PDF/pdf2013/30Jun/LubejandRadosavljevic.pdf
 
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FGPA - Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo
Opis:Delayed ettringite formation (DEF) is a chemical reaction with proven damaging effects on hydrated concrete. Ettringite crystals can cause cracks and their widening due to pressure on cracked walls caused by the positive volume difference in the reaction. Concrete may show improvements in strength at early ages but further growth of cracks causes widening and spreading through the concrete structure. In this study, finely dispersed crystallization nuclei achieved by adding air-entraining agent (AEA) and short vibration of specimens is presented as the main prerequisite for reducing DEF-induced deterioration of hydrated concrete. The study presents the method and mechanism for obtaining the required nucleation. Controlling long-term DEF by providing AEA-induced crystallisation nuclei, prevented excessive and rapid initial strength improvements, and resulted in a slight increase of compressive strength of fine grained concrete with only marginally lower density.
Ključne besede:delayed ettringite formation, aerated concrete, strength improvement
Leto izida:2013
Št. strani:str. 1307-1318
Številčenje:Vol. 8, 24
PID:20.500.12556/DKUM-50443 Novo okno
UDK:691
COBISS.SI-ID:17035542 Novo okno
DOI:10.5897/IJPS2013.3923 Novo okno
ISSN pri članku:1992-1950
NUK URN:URN:SI:UM:DK:U8PQVEMF
Datum objave v DKUM:10.07.2015
Število ogledov:1514
Število prenosov:31
Metapodatki:XML DC-XML DC-RDF
Področja:Ostalo
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Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:International journal of physical sciences
Skrajšan naslov:Int. j. phys. sci.
Založnik:Academic Journals
ISSN:1992-1950
COBISS.SI-ID:16148758 Novo okno

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