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Testing the frost resistance of concrete with different cement types – experience from laboratory and practice

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Języki publikacji
EN
Abstrakty
EN
The paper presents the frost resistance test results of concretes, in accordance with CEN/TS 12390-9, produced on selected CEM I, CEM II and CEM III cements from different European countries. Concrete composition was designed in line with the concrete production specifications of individual country. It was proved that CEM II and CEM III concretes demonstrate more scaling comparing to CEM I concrete, while analyzing frost resistance in standard time. The hydration degree of CEM II and CEM III cements is increased by modification of storage conditions (better humidity access and limited carbonation process) thus the resistance of concretes to low external temperatures attack is also improved.
PL
W pracy przedstawiono wyniki badań mrozoodporności betonów zgodnie z CEN/TS 12390-9 na wybranych cementach CEM I, CEM II i CEM III pochodzących w różnych krajów europejskich. Skład betonu przyjęto zgodnie z zasadami wykonywania betonów mrozoodpornych w poszczególnych krajach. Stwierdzono, że badając mrozoodporność betonu po normowym okresie dojrzewania, beton na cementach CEM II i CEM III daje większą ilość złuszczeń w porównaniu do cementu portlandzkiego CEM I. Modyfikując warunki dojrzewania (lepszy dostęp wilgoci i ograniczenie karbonatyzacji) zwiększamy stopień hydratacji cementów CEM II i CEM III, a tym samym polepszamy odporność betonów na tych cementach na działanie niskich temperatur zewnętrznych.
Rocznik
Strony
41--51
Opis fizyczny
Bibliogr. 27 poz.
Twórcy
autor
Bibliografia
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  • [6] CEN/TS 12390-9 ; 08/2006-08. Testing hardened concrete - Part 9; Freeze-thaw resistance - scaling, 2006
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  • [20] CEN/TR 15177; Testing the freeze-thaw resistance of concrete - Internal structural damage. German version CEN/TR 15177; 2006
  • [21] Utgenannt, P.; The Influence of ageing on the salt-frost resistance of concrete. Dissertation. Lund Institute of Technology, 2004
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL6-0015-0017
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