Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Vojtěch Pommer"'
Autor:
Dana Koňáková, Vojtěch Pommer, Kateřina Šádková, Martina Záleská, Martin Böhm, Martin Keppert, Eva Vejmelková
Publikováno v:
Developments in the Built Environment, Vol 18, Iss , Pp 100400- (2024)
A reduction in cement consumption can be achieved through the use of supplementary cementitious materials (SCMs). In addition, the utilization of more than one SCM can show a beneficial synergic performance. In this paper, a combination of calcium al
Externí odkaz:
https://doaj.org/article/60b2f906f736441688b42a595ac652a8
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 40 (2023)
Porosity is an important part of cement paste microstructure, which significantly influences the mechanical properties (especially durability and strength) of cement-based materials. Electrochemical impedance spectroscopy (EIS) is a non-destructive m
Externí odkaz:
https://doaj.org/article/d90e6f7799da4d7c804c1911e2ffbabd
Autor:
Dana Koňáková, Vojtěch Pommer, Kateřina Šádková, Martin Keppert, Robert Černý, Eva Vejmelková
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 1512-1523 (2022)
Nowadays it is almost impossible to design a cement-based mixture without the application of some plasticizing additives. There have been developed many types of plasticizers, but they are mostly directed for Portland cement applications. In the case
Externí odkaz:
https://doaj.org/article/b3a1f485c73c45b8ac2ec5a4c481309b
Publikováno v:
Polymers, Vol 15, Iss 14, p 3092 (2023)
The rationalization of material flows, together with the utilization of waste raw materials for the production of alternative binders, became a very attractive topic during the last decades. However, the majority of designed materials can be used as
Externí odkaz:
https://doaj.org/article/f381acc90d29462bb0af4ebab396dc61
Autor:
Jan Fořt, Radimír Novotný, Eva Vejmelková, Anton Trník, Pavla Rovnaníková, Martin Keppert, Vojtěch Pommer, Robert Černý
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 6, Pp 6253-6261 (2019)
Geopolymerization of waste products can contribute to the solution of current environmental issues related to depletion of natural resources. In this paper, several geopolymer mixes are prepared using waste brick in powdered form, while different alk
Externí odkaz:
https://doaj.org/article/bf5949533be84ddb9669f349b6995b0f
Autor:
Wael A. A. Abo Elgat, Ayman S. Taha, Mohamed Z. M. Salem, Yahia G. D. Fares, Martin Böhm, Mourad F. Mohamed, Ramadan A. Nasser, Vojtěch Pommer
Publikováno v:
Polymers, Vol 13, Iss 20, p 3483 (2021)
The accelerated ageing of wood in terms of heating or iron rusting has a potential effect on the physio-mechanical, chemical and biological properties of wood. The effects of accelerated ageing on the mechanical, physical and fungal activity properti
Externí odkaz:
https://doaj.org/article/8a88dcd264994fcd8599044dbd239d20
Publikováno v:
Advances in Materials Science and Engineering, Vol 2018 (2018)
A comprehensive analysis of environmental loads across the Czech Republic in terms of frost-induced damage is presented. Computational simulation of hygrothermal performance of eleven characteristic types of building envelopes, composed of both conte
Externí odkaz:
https://doaj.org/article/9885c89232f24cda90b5bc76f978786e
Publikováno v:
Ceramics International. 49:13452-13468
Publikováno v:
Ceramics International. 47:31574-31582
The waste ceramics belongs to wide range of aluminosilicate materials which can be alkaline-activated to geopolymer cement – possible “green” alternative to conventional Portland cement. The studied ceramic material is generated during the size
Autor:
Václav Kočí, Eva Vejmelková, Dana Koňáková, Vojtěch Pommer, Stefania Grzeszczyk, Aneta Matuszek-Chmurowska, Arkadiusz Mordak, Robert Černý
Publikováno v:
Construction and Building Materials. 374:130922