Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Mohamed Heikal"'
Publikováno v:
Discover Applied Sciences, Vol 6, Iss 11, Pp 1-21 (2024)
Abstract This research investigates the impact of incorporating low-cost MnFe2O4 spinel nanoparticles (MF-NPs) at varying concentrations (0.5, 1, and 2 mass%) on the mechanical and physical properties of blended cement pastes. These pastes were produ
Externí odkaz:
https://doaj.org/article/10c30b4e9f524e48bc525f84df2ee283
Autor:
Mohamed Heikal, Mohamed A. Ali, Djamel Ghernaout, Noureddine Elboughdiri, Badia Ghernaout, Hazem I. Bendary
Publikováno v:
Materials, Vol 16, Iss 21, p 6876 (2023)
This research investigates the long-term resilience of an environmentally friendly cement blend comprising Egyptian Ordinary Portland Cement OPC and Ground-Granulated Blast Furnace Slag GGBFS when exposed to a corrosive seawater environment. This sci
Externí odkaz:
https://doaj.org/article/c869f02aa6104fffbbf0c710deb83fa9
Publikováno v:
Journal of Scientific Research in Science, Vol 38, Iss 1, Pp 139-163 (2021)
The present research aims to explain the physico-chemical and mechanical characteristics of alkali activated slag geopolymer binder (AASGB). Commercial sodium hydroxide (SH) and sodium silicate liquid (SSL) are utilized as an alkaline activator at di
Externí odkaz:
https://doaj.org/article/1a6014d05b7c47beb4605303933bf557
Publikováno v:
Ceramics-Silikáty, Vol 64, Iss 4, Pp 398-406 (2020)
The present work aims to investigate the influence of clay nanoparticles (CNP) on the mechanical, physical and microstructure cement pastes composites. The cement paste composites were formulated by adding 20-60 mass% fly ash (FA), fine blast furnace
Externí odkaz:
https://doaj.org/article/263f64aa85c6494d84961a0c1ff19a30
Publikováno v:
Ceramics-Silikáty, Vol 64, Iss 3, Pp 320-337 (2020)
The impact of silica-nano-particles (SNP) onto the physicochemical and microscopic characteristics of composite-cements containing 40-60 mass% fly-ash (FA), and/or granulated-slag (GS) were studied. The physico-mechanical and microscopic-characterist
Externí odkaz:
https://doaj.org/article/9fd18ba2e95a4c76b0aa26ff4f91d3eb
Autor:
Mohamed Heikal, Sahar M. Ibrahim
Publikováno v:
Ceramics-Silikáty, Vol 59, Iss 2, Pp 81-89 (2015)
This research aims to produce cementless eco-friendly binding material using alkaline activation of blast-furnace slag (GBFS) and microsilica (MS). The preparation of cementless binding material was conducted with different GBFS-MS mass ratios (100:0
Externí odkaz:
https://doaj.org/article/c28ab461084149419c5294ecda5522d5
Publikováno v:
Ceramics-Silikáty, Vol 59, Iss 1, Pp 17-23 (2015)
The aim of the present work is to study the influence of citric acid (CA) as retarder on the properties of prompt cement pastes. The dosages of CA were 0.50, and 0.75, 1.00 and 1.25 mass % of prompt cement. The initial and final setting times, bulk d
Externí odkaz:
https://doaj.org/article/e13a70cf0658469692788a1b0366507f
Publikováno v:
Ceramics-Silikáty, Vol 58, Iss 2, Pp 165-171 (2014)
The aim of the present work is to study the effect of active belite on the hydration of C4A3S̅ and C4AS̅. The results revealed that the active β-C2S prevents the formation of crystalline ettringite and monosulfate hydrate as detected from the resu
Externí odkaz:
https://doaj.org/article/998ddd6790d14dc3a11e86764cee4c24
Publikováno v:
HBRC Journal, Vol 10, Iss 1, Pp 73-81 (2014)
This investigation aims to study the physico-chemical and surface characteristics of some composite cement pastes. Granulated slag (GBFS) was substituted with fired drinking water sludge (FDWTS) with 5, 10 and 15 wt% to prepare composite cements. The
Externí odkaz:
https://doaj.org/article/a485075fd34c4bc18af3594b718cac24
Publikováno v:
HBRC Journal, Vol 9, Iss 3, Pp 243-255 (2013)
The aim of the present work is to evaluate the effect of nano-silica (NS) on physico-chemical, compressive and flexural strengths of OPC-granulated slag blended cement pastes and mortars. Different mixes were made with various amounts of NS, OPC and
Externí odkaz:
https://doaj.org/article/bdb9fbe9fa5a4b3180641d825d9669c3