Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Erfan Najaf"'
Autor:
Maedeh Orouji, Erfan Najaf
Publikováno v:
Case Studies in Construction Materials, Vol 18, Iss , Pp e01769- (2023)
Considering the benefits of GFRP rebars and their lighter weight compared to steel rebars and the sustainability of polypropylene fibers, GFRP rebars and polypropylene fibers are investigated as sustainable materials replacements for steel rebars in
Externí odkaz:
https://doaj.org/article/83ddfc9e304b4c36b304084ef074235b
Publikováno v:
Case Studies in Construction Materials, Vol 17, Iss , Pp e01670- (2022)
Using FRP material to strengthen concrete beams is one of the best methods to prevent cracks propagation in the tensile zone. In this article, a concrete beam is modeled using the finite element software Abaqus. In order to investigate the effects of
Externí odkaz:
https://doaj.org/article/abe58e1e5e5143ed983b9b6c6e4b9695
Publikováno v:
Case Studies in Construction Materials, Vol 17, Iss , Pp e01482- (2022)
This study investigated the mechanical properties and microstructure of cementitious nanocomposites containing aqueous graphene oxide nanosheets (GONS) and nano-silica (NS) as a replacement for cement were investigated. Three groups of specimens, cla
Externí odkaz:
https://doaj.org/article/c8c36c9a048b4ecea2d0800fb51b06d4
Autor:
Erfan Najaf, Hassan Abbasi
Publikováno v:
Advances in Civil Engineering, Vol 2022 (2022)
The environment receives millions of tons of garbage, including plastic and glass, and concrete building debris contributes to a number of environmental problems. In order to reduce cement and make use of waste materials like glass and plastic, this
Externí odkaz:
https://doaj.org/article/e9ff6f321fdf441b80d62b139e109614
Autor:
Hassan Abbasi, Erfan Najaf
Publikováno v:
Advances in Civil Engineering. 2022:1-12
The environment receives millions of tons of garbage, including plastic and glass, and concrete building debris contributes to a number of environmental problems. In order to reduce cement and make use of waste materials like glass and plastic, this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::142c5daabf9cbfe7c2538b9497d2ab43
https://doi.org/10.1155/2022/9481466
https://doi.org/10.1155/2022/9481466
Autor:
Erfan Najaf
Publikováno v:
Civil Engineering Beyond Limits. 3:1-7
In addition to absorbing much of the vibrational energy due to entering the plastic area, the dampers that give in to the Chevron brace will also prevent the braces from buckling like a fuse. Because the low stiffness of the damper impairs its perfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75a28c981871bb43df63e330c2430ce8
https://doi.org/10.36937/cebel.2022.1684
https://doi.org/10.36937/cebel.2022.1684
Autor:
Erfan Najaf
Publikováno v:
Erfan Najaf
In recent years, there has been significant progress in using FRP materials as masonry in civil engineering. In this regard, researchers have investigated the behavior of reinforced beams with FRP and steel bars. One way to enhance these sections is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b06bcdc8e405b22d945ff6627e8828be
https://doi.org/10.36937/cebel.2022.1542
https://doi.org/10.36937/cebel.2022.1542
Publikováno v:
International Journal of Structural Integrity. 13:511-533
PurposeToday, using lightweight structural concrete plays a major role in reducing the damage to concrete structures. On the other hand, lightweight concretes have lower compressive and flexural strengths with lower impact resistance compared to ordi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eeef147bd0000bc7fd4c14f092b2c38d
https://doi.org/10.1108/ijsi-03-2022-0039
https://doi.org/10.1108/ijsi-03-2022-0039
Publikováno v:
Nonlinear Engineering. 11:58-70
Concrete is one of the most extensively utilized building materials that can be produced, and has the potential to release a significant quantity of CO2 into the environment. In this research, through studying lightweight (LW) concrete, attempts are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d47fed44050b1f86a60dbf7399724fd
https://doi.org/10.1515/nleng-2022-0008
https://doi.org/10.1515/nleng-2022-0008
Publikováno v:
Structures. 33:4616-4628
Today a wide variety of tools and instruments are made from glass, and they need recycling after being wasted. However, their recycling process could harm the environment. In order to increase concrete ductility and strength against the flexural and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66bb1ae720b00837734155df0cfa6f0c
https://doi.org/10.1016/j.istruc.2021.07.048
https://doi.org/10.1016/j.istruc.2021.07.048