Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Ahmed S. Ouda"'
Autor:
Ahmed S. Ouda, Hamdy A. Abdel-Gawwad
Publikováno v:
HBRC Journal, Vol 13, Iss 3, Pp 255-261 (2017)
In the present study, the effects of replacing sand by high percentages of basic-oxygen furnace slag on the compressive strength, bulk density and gamma ray radiation shielding properties of mortar have been investigated. Cement mortar of mix proport
Externí odkaz:
https://doaj.org/article/f8a8bfdd35194cbeaa0e5b61fddccba6
Autor:
Ahmed S. Ouda
Publikováno v:
HBRC Journal, Vol 11, Iss 3, Pp 328-338 (2015)
The performance requirements of the concrete of containment structures are mainly radiological protection, structural integrity, durability, etc. For this purpose, high-performance heavy density concrete can be used. After extensive trials and errors
Externí odkaz:
https://doaj.org/article/7f5627c226934b2abc33728ac118cbcc
Autor:
Salah A. Abo-El-Enein, Hamdy A. El-Sayed, Ali H. Ali, Yasser T. Mohammed, Hisham M. Khater, Ahmed S. Ouda
Publikováno v:
HBRC Journal, Vol 10, Iss 1, Pp 43-48 (2014)
Heavy weight high performance concrete (HPC) can be used when particular properties, such as high strength and good radiation shielding are required. Such concrete, using ilmenite and hematite coarse aggregates can significantly have higher specific
Externí odkaz:
https://doaj.org/article/28d5f859b7e948e58c91d118114b4262
Autor:
Ahmed S. Ouda, Mahmoud Gharieb
Publikováno v:
Environmental Science and Pollution Research. 30:127-144
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f1632e806f42c59f04182439dbc9bfb
https://doi.org/10.1007/s11356-022-22217-3
https://doi.org/10.1007/s11356-022-22217-3
Autor:
Ahmed S. Ouda
Publikováno v:
Journal of Civil Engineering and Construction. 10:11-20
The influence of superplasticizer addition on durability reinforcement of cement mortars made with basic-oxygen blast-furnace slag fine aggregate (BOF) as completely substitute for natural sand after being exposed to sea water solution for 6 months w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f90ae760ab9344311f2e827d3be4d00
https://doi.org/10.32732/jcec.2021.10.1.11
https://doi.org/10.32732/jcec.2021.10.1.11
Autor:
Ahmed S. Ouda
Publikováno v:
European Journal of Environmental and Civil Engineering. 26:4827-4846
This paper presents the influence of ceramic waste powder (CWP) inclusion on the physico-mechanical properties and microstructure analysis of alkali-activated pastes prior and after exposure to ele...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c698af5dfa9534a289ce61f4dcd7b6ac
https://doi.org/10.1080/19648189.2021.1871657
https://doi.org/10.1080/19648189.2021.1871657
Autor:
Ahmed S. Ouda, Khaled L. Abdel-Aal
Publikováno v:
Transactions of the Indian Ceramic Society. 78:146-154
Ceramic industry generates a large amount of wastes, which pollutes and damages the environment. This paper presents the effects of concrete waste incorporating dolomite aggregate on ceramic-based ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35cafe149c4ab703effc331646316bb0
https://doi.org/10.1080/0371750x.2019.1640637
https://doi.org/10.1080/0371750x.2019.1640637
Autor:
Alaa M. Rashad, Ahmed S. Ouda
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 136:609-620
In the current investigation, the opportunity of employing nano-SiO2 (NS) to modify fire resistance of metakaolin-based geopolymer pastes has been explored. Metakaolin (MK) was partially substituted with NS at ratios of 0.5%, 1%, 2%, 3% and 4%, by ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bd8a18f2f2458b71a04caa5a2dfc9d4
https://doi.org/10.1007/s10973-018-7657-1
https://doi.org/10.1007/s10973-018-7657-1
Autor:
Ahmed S. Ouda, Hakim S. Abdelgader
Publikováno v:
Geosystem Engineering. 22:72-80
The main purpose of this research is to improve the shielding of gamma rays by developing special concrete with high physico-mechanical properties using local aggregates. Various concrete mixtures ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bca1602b3d8b79ce1668d8649240a266
https://doi.org/10.1080/12269328.2018.1469434
https://doi.org/10.1080/12269328.2018.1469434
Autor:
Ahmed S. Ouda, Alaa M. Rashad
Publikováno v:
Microporous and Mesoporous Materials. 324:111261
The behavior of high-volume fly ash (HVFA) cement pastes modified with metakaolin (MK), quartz powder (Q-P) and their combination in the marine environment was studied. HVFA pastes were manufactured by partially replacing Portland cement (PC) with 70
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89426d92d046c367e75814824a96ac78
https://doi.org/10.1016/j.micromeso.2021.111261
https://doi.org/10.1016/j.micromeso.2021.111261