Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Shamsad Ahmad"'
Publikováno v:
International Journal of Concrete Structures and Materials, Vol 18, Iss 1, Pp 1-20 (2024)
Abstract The presence of low-quality coarse aggregates and exposure to aggressive conditions are the two major problems with the durability of concrete. Therefore, an alternative concrete with enhanced properties to prevent fluid and ionic mobility c
Externí odkaz:
https://doaj.org/article/d1f8d08609274560b271bf04ab117a78
Autor:
Ahmed F. Shalabi, Omar S. Baghabra Al-Amoudi, Mohammed A. Al-Osta, Yakubu Sani Wudil, M.A. Gondal, Shamsad Ahmad, Salah U. Al-Dulaijan, Mohammed Ibrahim, Esam Al-Nahari
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03981- (2024)
Reinforced concrete structures face significant annual expenditures in combating rebar corrosion, with chloride penetration identified as a major contributor. This study employs laser-induced breakdown spectroscopy (LIBS) to quantitatively predict th
Externí odkaz:
https://doaj.org/article/43efc1726b78445588fd1ca584a75382
Publikováno v:
Journal of CO2 Utilization, Vol 83, Iss , Pp 102812- (2024)
The release of carbon dioxide (CO2) into the earth's atmosphere is a substantial global environmental concern that arises from the processes of industrialization and urbanization. The increase in atmospheric CO2 concentrations has resulted in the phe
Externí odkaz:
https://doaj.org/article/dbdf9b2db47746f5ad34946b40f6447f
Autor:
Marwan Abdulqader, Hammad R. Khalid, Mohammed Ibrahim, Saheed K. Adekunle, Mohammed A. Al-Osta, Shamsad Ahmad, Muhammad Sajid
Publikováno v:
Journal of Materials Research and Technology, Vol 25, Iss , Pp 2769-2783 (2023)
Using calcined clays and limestone powder for clinker substitution to make a tertiary blend, known as limestone calcined clay cement (LC3), is a promising emerging technology. This study explored the viability of using local Saudi clays to prepare LC
Externí odkaz:
https://doaj.org/article/a78b0d21f1cc4f749f96bf5a9fdf5d0b
Autor:
Hayder Abbas Sallal, Mohammed Hamid Mahboba, Mohammed S. Radhi, Asad Hanif, Zainab S. Al-Khafaji, Shamsad Ahmad, Zaher Mundher Yaseen
Publikováno v:
Journal of King Saud University: Science, Vol 36, Iss 2, Pp 103061- (2024)
A polymeric blend combines two or more polymers to form a new material with different physical properties. In this work, a base material consisting of a polymeric mixture was manufactured to improve its properties and then strengthened with nanoparti
Externí odkaz:
https://doaj.org/article/8c1db8473b78451dbc86e63ee4c9dd6c
Microstructural and strength variations in natural sands exposed to diverse environmental conditions
Autor:
Hassan Tumwiine, Mubashir Aziz, Umair Ali, Omar S.B. Al-Amoudi, Shamsad Ahmad, Abdulazeez Abdulraheem
Publikováno v:
Case Studies in Construction Materials, Vol 19, Iss , Pp e02403- (2023)
Climatic variation affects the physicochemical properties of geomaterials and its impact on the mechanical performance of infrastructure depends on the nature and origin of the material. The long-term behavior of sand, like any other construction mat
Externí odkaz:
https://doaj.org/article/eb5728a2097e4c7d8f52cd3e9bcdbf13
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-25 (2023)
Abstract In order to increase the efficiency of the structures to resist seismic excitation, combinations of inerter, negative stiffness, and tuned mass damper are used. In the present work, the optimum tuning frequency ratio and damping of the tuned
Externí odkaz:
https://doaj.org/article/922b6c1768f84738a346c7a0cccb1b0f
Publikováno v:
Tikrit Journal of Engineering Sciences, Vol 29, Iss 4 (2022)
Fire is one of the most severe conditions to which buildings may be exposed. However, reinforced concrete has good resistance, which makes it one of the building materials most widely used worldwide. When reinforced concrete is exposed to high temper
Externí odkaz:
https://doaj.org/article/aaa46f6f218643ee9e6695726f03a208
Publikováno v:
Case Studies in Construction Materials, Vol 17, Iss , Pp e01414- (2022)
The production of Portland cement is a significant source of carbon emission into the atmosphere. Therefore, the utilization of a cement byproduct to enhance carbon sequestration in concrete contributes to carbon and waste cycling, thus promotes clea
Externí odkaz:
https://doaj.org/article/2667824892bb4c83984b6706300696fe
Publikováno v:
Case Studies in Construction Materials, Vol 17, Iss , Pp e01255- (2022)
In the present work, effect of inclusion of silica fume on the performance of natural pozzolan-based cement concrete was investigated. Natural pozzolan, obtained from volcanic rocks, was used as the main supplementary cementitious material to partial
Externí odkaz:
https://doaj.org/article/c8ee5a3f12d0496b9a9e3135b975e2be