Zobrazeno 1 - 10
of 245
pro vyhledávání: '"I. Janotka"'
Publikováno v:
Materiales de Construccion, Vol 66, Iss 322, Pp e084-e084 (2016)
Utility properties of novel hybrid cement (H-Cement) are influenced by pozzolanic reaction of fly ash, latent hydraulic reaction of metallurgical slag together with the alkali activation of inorganic geopolymer based on precipitated waste water comin
Externí odkaz:
https://doaj.org/article/25f53e11f203490191d01fdd5bcabf0c
Publikováno v:
Materiales de Construccion, Vol 60, Iss 298, Pp 73-88 (2010)
The kaolin sand resource at the Vyšný Petrovec quarry in Slovakia comes to a total of 20 megatonnes. The metakaolin material obtained by heating kaolin sand at 650 ºC contains from 31.5 to 40% (wt) metakaolinite, as well as illite, muscovite, quar
Externí odkaz:
https://doaj.org/article/8be38d6cfc164b51820943c768ac54b2
Autor:
L. Krajci, I. Janotka
Publikováno v:
Materiales de Construccion, Vol 54, Iss 274, Pp 17-32 (2004)
The suitable detection system of steel reinforcement corrosion in concrete structures contributes to the reduction of their maintenance costs. Method of steel electrical resistance represents non-destructive monitoring of steel in cementitious system
Externí odkaz:
https://doaj.org/article/f62665d36dc8491db8291282ee955243
Autor:
I. Janotka, S. C. Mojumdar
Publikováno v:
Materiales de Construccion, Vol 53, Iss 269, Pp 17-28 (2003)
The objective of this paper is to characterise sulphate resistance of mortars made from ordinary Portland cement ( PC ) and Portland-pozzolan cement with 35 wt.% of zeolite addition (zeolite-blended cement-ZBC ). Mortars with two different cement typ
Externí odkaz:
https://doaj.org/article/b47e0046c5074ac8a14b491699574a6c
Akademický článek
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Akademický článek
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Publikováno v:
Magazine of Concrete Research. 52:399-409
Tests were carried out on concrete with normal Portland cement, silica fume and dolomitic aggregate subjected to temperatures of 20–800°C to determine the effect of temperature on the phase composition and pore structure development, and physico-m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51d1d1aee561457970e2bec1159b5662
https://doi.org/10.1680/macr.2000.52.6.399
https://doi.org/10.1680/macr.2000.52.6.399
Autor:
I. Janotka, L.è Krajèi
Publikováno v:
Bulletin of Materials Science. 23:521-527
Resistance to freezing and thawing of mortar specimens made from sulphoaluminate-belite cement (M-SAB) is compared with that of mortars made from portland cement (M-PC). The results suggest that larger median radius of the pores and total porosity of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43932f17e730e83c4aebd28cef483a1f
https://doi.org/10.1007/bf02903894
https://doi.org/10.1007/bf02903894
Autor:
T. Nürnbergerová, I. Janotka
Publikováno v:
Materials and Structures. 32:719-726
This paper reports on an experimental investigation conducted to study the effects of high temperatures of up to 200°C on the phase composition, pore structure development and physico-mechanical properties of concrete at the PENLY nuclear power plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4f1b25dc08efad587b199ff937b6e34
https://doi.org/10.1007/bf02905068
https://doi.org/10.1007/bf02905068
Autor:
L'. Krajči, I. Janotka
Publikováno v:
Advances in Cement Research. 11:35-41
Blends consisting of sulfoaluminate—belite (SAB) cements and Portland cement (PC) (CEM I 42·5) were tested. The initial set of PC was 3 h 10 min, of SAB-1 cement 10 min and of SAB-2 cement 20 min, whereas those of blends 85 wt% SAB-1 and 85 wt% SA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e5507e0a605c72f2518f8bbe224047c
https://doi.org/10.1680/adcr.1999.11.1.35
https://doi.org/10.1680/adcr.1999.11.1.35