Wpływ dodatku metakaolinu na odporność na pękanie ogniotrwałych betonów zbrojonych włóknami bazaltowymi

Jogl, M.; Reiterman, P.; Holčapek, O.; Konvalinka, P.

Artykuł - szczegóły

Tytuł artykułu

Wpływ dodatku metakaolinu na odporność na pękanie ogniotrwałych betonów zbrojonych włóknami bazaltowymi

Autorzy

Jogl M. , Reiterman P. , Holčapek O. , Konvalinka P.

Wybrane pełne teksty z tego czasopisma

http://www.cementwapnobeton.pl/

Identyfikatory

Warianty tytułu

Influence of metakaolin addition on fracture properties of refractory concretes reinforced with basalt fibres

Języki publikacji

PL EN

Abstrakty

W pracy zbadano odporność na wysokie temperatury ogniotrwałego betonu z cementu glinowego zbrojonego włóknami bazaltowymi. W serii próbek cement zastępowano metakaolinem w ilości od 5% do 25%. Właściwości próbek betonowych, a mianowicie wytrzymałość na ściskanie i zginanie oraz energię pękania, zbadano po podgrzaniu do temperatury 600°C i 1000°C. Ustalono, że stosunkowo mały dodatek metakaolinu, w zakresie 5% do 10% zapewnia większą wytrzymałość, jednak w przypadku równoczesnego zastosowania włókien bazaltowych wzrasta nawet przy dodatku 10% i 20%. Korzystny dodatek włókien jest mały: 0,25% do 0,5% objętościowo. Pomiary energii pękania pokazują duży wpływ włókien na propagację pęknięć w próbkach ogrzewanych do 600°C i 1000°C.

In the paper the resistance to high temperature of refractory concrete from calcium aluminate cement reinforced with basalt fibres was studied. In the series of samples cement was replaced by metakaolin from 5% to 25%. The properties i.e. flexural, compressive strength and fracture energy of concrete samples heated at 600°C and 1000°C were examined. It was established that relatively low metakaolin addition, in the range of 5% to 10%, is ensuring higher strength, but with simultaneous basalt fibres application is higher from 10% to even 20%. The optimum fibres percentage is low, 0.25% to 0.5 % by volume. The fracture energy determination show the significant fibres influence on cracks propagation in samples heated at 600°C and 1000°C.

Słowa kluczowe

beton ogniotrwały cement glinowo-wapniowy beton zbrojony włóknami włókno bazaltowe odporność na pękanie dodatek do betonu metakaolin

refractory concrete calcium aluminate cement fibre reinforced concrete basalt fibre fracture resistance concrete additive metakaolin

Wydawca

Fundacja Cement, Wapno, Beton

Czasopismo

Cement Wapno Beton

Rocznik

2016

Tom

R. 21/83, nr 3

Strony

140--148

Opis fizyczny

Bibliogr. 33 poz., il., tab.

Twórcy

autor

Jogl M.

Czech Technical University in Prague, Faculty of Civil Engineering, Experimental Centre, Czech Republic

autor

Reiterman P.

Czech Technical University in Prague, Faculty of Civil Engineering, Experimental Centre, Czech Republic

autor

Holčapek O.

Czech Technical University in Prague, Faculty of Civil Engineering, Experimental Centre, Czech Republic

autor

Konvalinka P.

Czech Technical University in Prague, Faculty of Civil Engineering, Experimental Centre, Czech Republic

Bibliografia

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Uwagi

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

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-bfc1bc70-367e-4493-8983-9eeea93fca17