Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Izabela Hager"'
Publikováno v:
Applied Sciences, Vol 14, Iss 7, p 3038 (2024)
Compositions of fine-grained concrete mixtures that provide the minimum required strength values in 1 day (7.5 MPa) have been developed. A comparison was made of the test results of the properties of samples printed on a 3D printer with samples made
Externí odkaz:
https://doaj.org/article/4ebc64b743ce44c1aa45b38d13c4b75f
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 33, Pp 207-211 (2022)
The paper presents the evolution of equivalent thermal diffusivity with temperature of concretes with natural coarse aggregates and recycled concrete aggregates. Thermal diffusivity was evaluated based on the temperature measurements made on cylindri
Externí odkaz:
https://doaj.org/article/a3b2078879654051a305bbb3c32a1210
Publikováno v:
Materials Proceedings, Vol 13, Iss 1, p 45 (2023)
In submitting conference proceedings to Materials Proceedings, the volume editors of the proceedings certify to the publisher that all papers published in this volume have been subjected to peer review administered by the volume editors [...]
Externí odkaz:
https://doaj.org/article/96981b43b29245758166530bfac23e18
Publikováno v:
Materials Proceedings, Vol 13, Iss 1, p 7 (2023)
Geopolymers are new environmentally friendly cementitious materials that may offer an alternative to Ordinary Portland Cement. Not only do they have excellent mechanical properties, but they also have high temperature resistance. This research focuse
Externí odkaz:
https://doaj.org/article/32f39f9321d547a0a3e4c7cac09e8405
Publikováno v:
Materials Proceedings, Vol 13, Iss 1, p 38 (2023)
Alkali-activated materials (AAMs) are a group of environmentally friendly binders considered alternatives to conventional cementitious binders. They utilise industrial wastes such as slag and fly ash to reduce cement production and related CO2 emissi
Externí odkaz:
https://doaj.org/article/28aa560e95864421aba7ab84b8f7997f
Publikováno v:
Energies, Vol 15, Iss 13, p 4610 (2022)
The article presents a set of experimental-static models of the properties of fine-grained concretes on a cement–slag binder and quartz sand with the addition of a hardening accelerator made on a 3D printer. The influence of the factors of the comp
Externí odkaz:
https://doaj.org/article/4ff0ae42f70f429ea7cfd22db3db4fdb
Autor:
Mateusz Sitarz, Beata Figiela, Michał Łach, Kinga Korniejenko, Katarzyna Mróz, João Castro-Gomes, Izabela Hager
Publikováno v:
Energies, Vol 15, Iss 9, p 3363 (2022)
Two geopolymer foams were prepared from a thermally activated coal gangue containing kaolinite. As the foaming agent, aluminium powder and 36% hydrogen peroxide were used to obtain two levels of porosity. The materials’ high temperature performance
Externí odkaz:
https://doaj.org/article/51b47b3ae6a54d7d8a7ee371307da2b0
Publikováno v:
Energies, Vol 15, Iss 10, p 3556 (2022)
This article presents experimental studies that have shown the effectiveness of using a composition of fly ash and metakaolin as an active mineral admixture to cement. It is shown that composite ash–metakaolin additives (AMAd) have on the one hand
Externí odkaz:
https://doaj.org/article/ef0be85bffbd4d7984a2cc1cd2c9f0eb
Publikováno v:
Energies, Vol 13, Iss 10, p 2639 (2020)
Geopolymers are less energy-demanding alternatives to Portland cement binders. The subject of geopolymer rheology has not yet been fully explored, and the available literature is limited to a narrow range of material compositions. This paper presents
Externí odkaz:
https://doaj.org/article/acf46ee8a0b74184be5bc38332c3ba29
Publikováno v:
Energies, Vol 13, Iss 5, p 1135 (2020)
Geopolymers are considered to alternatives to Portland cement, providing an opportunity to exploit aluminosilicate wastes or co-products with promising performances in the construction sector. This research is aimed at investigating the strength of f
Externí odkaz:
https://doaj.org/article/b67b098dd0fa466897c12c0e4b48b90e