Experimentally evaluation of high-performance concrete mixes used for tunnels and containing silica fume and polypropylene fiber after exposed to high temperatures

Autor: Mohamed Elmesiri, Mohamed Fawzy Ahmed, Mohamed Bneni, Ahmed ElShami, Seleem Ahmad

Publikováno v: Frattura ed Integrità Strutturale, Vol 16, Iss 62 (2022)

This work introduces an experimental study to evaluate the effect of elevated temperatures on the mechanical properties of high-performance concrete (HPC) mix with changes in Water-Cementitious ratios, W/(C+SF), Silica Fume percent, SF, and Polypropy

Externí odkaz: https://doaj.org/article/6b64a15ffe614ca2b19305ae5b62bd03

Investigating the Effects of Recycled Aggregate and Mineral Admixtures on the Mechanical Properties and Performance of Concrete

Autor: Amal Fawzy, Ahmed Elshami, Seleem Ahmad

Publikováno v: Materials, Vol 16, Iss 14, p 5134 (2023)

In this work, the effects of recycled concrete aggregate, modified with mineral admixtures and nanosilica, on the mechanical properties and performance of concrete after curing in tap water for 28 and 90 days were investigated. The compressive (ƒc),

Externí odkaz: https://doaj.org/article/d1257c4bac1949f1a3802401f3ea205b

Effects of Five Sources of Mixing Water on Durability of Concrete

Autor: Ahmed Elshami

Publikováno v: Assiut University Journal of Multidisciplinary Scientific Research. 52:232-248

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9402db6f6a35e9eee37e78c0001431eb
https://doi.org/10.21608/aunj.2023.205414.1051

Assessment of mechanical and durability properties of HPC used for tunnels at different temperatures

Autor: Seleem Ahmad, Mohamed Elmesiri, Mohamed Fawzy, Mohamed Bneni, Ahmed Elshami

Publikováno v: The Egyptian International Journal of Engineering Sciences and Technology.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b17c4529943d7ce30fdaf5559dcf3fe4
https://doi.org/10.21608/eijest.2023.171509.1188

Self-healing mortar using different types, content, and concentrations of bacteria to repair cracks

Autor: Seleem Saleh Elsayed Ahmad, Mohamed Yousry Elshikh, Ahmed ELShami, Mohamed Ahmed Refat El-Mahdy

Publikováno v: Frattura ed Integrità Strutturale; Vol. 16 No. 59 (2022): January 2022; 486-513
Frattura ed Integrità Strutturale; V. 16 N. 59 (2022): January 2022; 486-513
Frattura ed Integrità Strutturale, Vol 16, Iss 59, Pp 486-513 (2022)
Frattura ed Integrità Strutturale, Vol 16, Iss 59 (2021)

The creation of cracks, which are the most common cause of structural failure, has a significant impact on the structure's strength and durability. As a result, effective repair and maintenance are vital and unavoidable for treating any of these issu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49db9d0ef94227b0a60622765eb751a0
https://www.fracturae.com/index.php/fis/article/view/3320