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izvor podataka: crosbi

Some aspects of the delayed ettringite formation (DEF) in concrete : A review (CROSBI ID 577138)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Bjegović, Dubravka ; Cigrovski, Igor Some aspects of the delayed ettringite formation (DEF) in concrete : A review // Workshop on Performance-based Specification for Concrete : proceedings / Dehn, Frank ; Beushausen, Hans (ur.). Leipzig: MFPA Institute Leipzig, 2011. str. 201-210

Podaci o odgovornosti

Bjegović, Dubravka ; Cigrovski, Igor

engleski

Some aspects of the delayed ettringite formation (DEF) in concrete : A review

Damage of concrete due to sulfate attack is one of a serious problem for the durability of concrete structures. Special type of internal sulfate attack is heat-induced attack or so-called delayed ettringite formation (DEF). Delayed ettringite formation is still an open question. Because delayed ettringite was found in expansive paste, mortar and concrete it is considered as a cause of expansion. In this paper some aspects of the proposed mechanisms of expansion of concrete associated with the formation of delayed ettringite, will be presented. Apart from the exact mechanism of expansion, significant impact on the expansion have temperature of curing (curing regime), pH of pore solution, aggregate, chemical composition of cement and microcracks, among others. These parameters will be discussed in this paper. Understanding of these parameters is particularly important for development/improvement of performance-based test to prevent DEF.

delayed ettringite formation (DEF); cracking; concrete; sulfate

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Podaci o prilogu

201-210.

2011.

objavljeno

Podaci o matičnoj publikaciji

Workshop on Performance-based Specification for Concrete : proceedings

Dehn, Frank ; Beushausen, Hans

Leipzig: MFPA Institute Leipzig

978-3-9814523-0-3

Podaci o skupu

Workshop on Performance-based Specifications for Concrete

predavanje

14.06.2011-15.06.2011

Leipzig, Njemačka

Povezanost rada

Građevinarstvo