Betony o dużej wytrzymałości z cementu portlandzkiego z dodatkiem metakaolinu uzyskanego z piasków kaolinowych ze złoża w pobliżu Lućenec na Słowacji

Bačuvčík, M.; Janotka, I.; Smrčková, E

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Tytuł artykułu

Betony o dużej wytrzymałości z cementu portlandzkiego z dodatkiem metakaolinu uzyskanego z piasków kaolinowych ze złoża w pobliżu Lućenec na Słowacji

Autorzy

Bačuvčík M. , Janotka I. , Smrčková E

Wybrane pełne teksty z tego czasopisma

http://www.cementwapnobeton.pl/

Identyfikatory

Warianty tytułu

High - strength concrete from Portland cement with addition of metakaolin obtained of kaolin sand from deposit near Lučenec in Slovakia

Języki publikacji

PL EN

Abstrakty

W pracy zbadano przydatność piasku kaolinowego z miejscowości Vyšný Petrovec koło Lućenec na Słowacji jako surowca do produkcji metakaolinu. Ten surowiec, nazywany piaskiem kaolinowym, zawiera tylko około 50% masowych kaolinitu, jednak po dehydroksylacji w temperaturze 650°C osiąga po 28 dniach właściwości pucolanowe na poziomie 87%. Dodatek tego metakaolinu do spoiwa, zastępującego część cementu, ma korzystny wpływ na właściwości betonu. Taki skład betonu zwiększa wytrzymałość oraz moduł Younga, a także odporność na zamrażanie i rozmrażanie w obecności NaCl, bez napowietrzenia. Uzyskano także zmniejszenie ekspansji betonu o jedną trzecią w porównaniu do kompozytu referencyjnego.

In the paper the results of the kaolin sand from Vyšný Petrovec near Lućenec in Slovakia application as a raw material for metakaolin production is presented. This kaolin sand is containing only about 50% by mass of kaolinite, however, after dehydroxylation at 650°C has the pozzolanic reactivity of 87%. The positive effects of metakaolin addition replacing part of cement in concrete are the following: the increase of strength and Young's modulus of elasticity and the increase of resistance to de-icing salts and to freezing and thawing without air entrainment. Additionally also the reduction of expansion by more than one third in comparison to the reference concrete was obtained.

Słowa kluczowe

beton wysokiej wytrzymałości cement portlandzki dodatek mineralny metakaolin piasek kaolinowy złoże kaolinu

high-strength concrete Portland cement mineral additive metakaolin kaolin sand kaolin deposit

Wydawca

Fundacja Cement, Wapno, Beton

Czasopismo

Cement Wapno Beton

Rocznik

2017

Tom

R. 22/84, nr 3

Strony

187--200

Opis fizyczny

Bibliogr. 57 poz., il., tab.

Twórcy

autor

Bačuvčík M.

Building Testing and Research Institute, Bratislava, Slovakia

autor

Janotka I.

Building Testing and Research Institute, Bratislava, Slovakia
Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Bratislava, Slovakia

autor

Smrčková E

Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Bratislava, Slovakia

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-73f0df38-60f9-49dd-9614-d262b704234c