Zobrazeno 1 - 10
of 14 082
pro vyhledávání: '"alkali activated"'
Autor:
Aimard Manfred Njawa Moudio, Ismailla Hamed Riyap, Jean Mermoz Siewé, Hervé Kouamo Tchakouté, Charles Péguy Nanseu-Njiki, Claus Henning Rüscher, Pengkun Hou
Publikováno v:
Discover Civil Engineering, Vol 1, Iss 1, Pp 1-17 (2024)
Abstract This study evaluates the influence of the CaO/Al2O3 molar ratio of synthetic calcium aluminate hydrates on the properties of alkali-activated materials based on metakaolin. Calcium aluminate hydrates with CaO/Al2O3 molar ratios of 0.4, 0.6,
Externí odkaz:
https://doaj.org/article/e1240f4f9c9e46588b8973035006e08b
Autor:
Ruitao Xue, Yue Hou
Publikováno v:
Alexandria Engineering Journal, Vol 108, Iss , Pp 583-589 (2024)
This study explores the development of sustainable porous building materials through the alkali-activation of fly ash and waste clay brick powder. Utilizing Class F fly ash and brick powder from demolished buildings, a series of alkali-activated mort
Externí odkaz:
https://doaj.org/article/dd38e34f3d1c444dad4aaec815b7faa8
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-19 (2024)
Abstract This research aims to produce green cement, as an alternative to traditional cement, with outstanding performance. Five alkali-activated cement pastes were fabricated based on NaOH-activation of slag (GGBFS), bypass (B), and/or silica fume (
Externí odkaz:
https://doaj.org/article/ffcf213e458341808b9db2dc338c6f5c
Autor:
Diego Alejandro Gutiérrez-Orrego, Maryory Astrid Gómez-Botero, Edwin Fabián García-Aristizábal
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03532- (2024)
The use of OPC as a construction material is currently being reconsidered owing to the generation of greenhouse gases during production. Geopolymers or alkali-activated cement (AAC) have been proposed as partial replacements because of their excellen
Externí odkaz:
https://doaj.org/article/35cffe37f7a741a29fe15532960b5900
Publikováno v:
Journal of Traffic and Transportation Engineering (English ed. Online), Vol 11, Iss 5, Pp 918-938 (2024)
Geopolymer concrete (GPC) has been developed as a sustainable alternative to traditional cement-based concrete using industrial waste materials. Thus, reducing greenhouse gas emissions in concrete production can be expected. This study employed the l
Externí odkaz:
https://doaj.org/article/f441b7ab0efc48b5b2a4b8b9958fb945
Publikováno v:
Discover Sustainability, Vol 5, Iss 1, Pp 1-12 (2024)
Abstract This paper aimed to investigate the durability of ambient-cured fly ash-phosphogypsum blended geopolymer mortar (GPM) when exposed to a water and sulfate environment at different durations. Water absorption, porosity, and sulfate resistance
Externí odkaz:
https://doaj.org/article/a9da8cfe0c3b4ad085df07674b551a70
Autor:
Roberta Occhipinti, Silvia Portale, Gabriele Lanzafame, Domingo Gimeno, Marko Kudrna Prašek, Paolo Mazzoleni, Germana Barone
Publikováno v:
Volcanica, Vol 7, Iss 2, Pp 717-731 (2024)
The 2021 Tajogaite eruption was marked by intense pyroclastic fallout that covered a substantial portion of La Palma island, with maximum thicknesses in the central-western part. This, combined with lava flows, resulted in widespread damage to public
Externí odkaz:
https://doaj.org/article/638041df6a3d412391e748d7b2973a79
Autor:
Rosnita Mohamed, Rafiza Abd Razak, Mohd Mustafa Al Bakri Abdullah, Shayfull Zamree Abd Rahim, Nurul Aida Mohd Mortar, Liyana Jamaludin, Marcin Nabialek
Publikováno v:
Archives of Civil Engineering, Vol vol. 70, Iss No 3, Pp 473-485 (2024)
Alkali-activated slag has been noted as one of potential alternatives to the ordinary Portland cement due to its properties including high early strength performance and capability of ambient curing. However, there is still limited studies available
Externí odkaz:
https://doaj.org/article/f5690555d7c14f75b4736c29b0b7a2a1