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385 results on '"Javadi, Akbar A."'

14. Assessment and Management of Seawater Intrusion in Gaza Aquifer Due to Over Pumping and Sea Level Rise

Author

Abd-Elhamid, Hany F., Zeleňáková, Martina, Javadi, Akbar A., Qahman, Khalid, Singh, V. P., Editor-in-Chief, Berndtsson, R., Editorial Board Member, Rodrigues, L. N., Editorial Board Member, Sarma, Arup Kumar, Editorial Board Member, Sherif, M. M., Editorial Board Member, Sivakumar, B., Editorial Board Member, Zhang, Q., Editorial Board Member, Sherif, Mohsen, editor, Singh, Vijay P., editor, Sefelnasr, Ahmed, editor, and Abrar, M., editor

Published
2023
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15. Effect of Seawater on the Mechanical Strength of Geopolymer/Cement Stabilized Sandy Soils

Author

Samadi, Parisa, Ghodrati, Ali, Ghadir, Pooria, Javadi, Akbar A., Zheng, Zheng, Editor-in-Chief, Xi, Zhiyu, Associate Editor, Gong, Siqian, Series Editor, Hong, Wei-Chiang, Series Editor, Mellal, Mohamed Arezki, Series Editor, Narayanan, Ramadas, Series Editor, Nguyen, Quang Ngoc, Series Editor, Ong, Hwai Chyuan, Series Editor, Sun, Zaicheng, Series Editor, Ullah, Sharif, Series Editor, Wu, Junwei, Series Editor, Zhang, Baochang, Series Editor, Zhang, Wei, Series Editor, Zhu, Quanxin, Series Editor, Zheng, Wei, Series Editor, Javankhoshdel, Sina, editor, and Abolfazlzadeh, Yousef, editor

Published
2023
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26. Feasibility of Crop Production Using Greenhouse Fed by Desalination: A Review (MENA Regions)

Author

Awaad, Hassan, Negm, Abdelazim, Fath, Hassan, Javadi, Akbar, Förstner, Ulrich, Series Editor, Rulkens, Wim H., Series Editor, Salomons, Wim, Series Editor, Ksibi, Mohamed, editor, Ghorbal, Achraf, editor, Chakraborty, Sudip, editor, Chaminé, Helder I., editor, Barbieri, Maurizio, editor, Guerriero, Giulia, editor, Hentati, Olfa, editor, Negm, Abdelazim, editor, Lehmann, Anthony, editor, Römbke, Jörg, editor, Costa Duarte, Armando, editor, Xoplaki, Elena, editor, Khélifi, Nabil, editor, Colinet, Gilles, editor, Miguel Dias, João, editor, Gargouri, Imed, editor, Van Hullebusch, Eric D., editor, Sánchez Cabrero, Benigno, editor, Ferlisi, Settimio, editor, Tizaoui, Chedly, editor, Kallel, Amjad, editor, Rtimi, Sami, editor, Panda, Sandeep, editor, Michaud, Philippe, editor, Sahu, Jaya Narayana, editor, Seffen, Mongi, editor, and Naddeo, Vincenzo, editor

Published
2021
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39. Role of the Subgrade Reaction Modulus in the Design of Foundations for Adjacent Buildings.

Author

Khosravifardshirazi, Ali, Tavana, Babak, Javadi, Akbar A., Johari, Ali, Gholzom, Shima, Khosravifardshirazi, Behnaz, and Akrami, Mohammad

Subjects
BUILDING foundations, FINITE element method, SOIL-structure interaction
Abstract

This paper examines the effects of soil–structure and structure–soil–structure interactions in the design of foundations for adjacent concrete buildings, which are located on soft soils. The study employs an elasto-plastic model through static (quasi-dynamic) analysis using the direct finite element method by applying earthquake loads in one time step. Two concrete buildings, one with 6 stories and another with 12 stories, were modelled and numerically analysed using ANSYS. The foundations of these two buildings were analysed separately and compared when they were assumed to be adjacent to each other. The designs of the buildings' foundations were evaluated independently and in comparison with each other to determine the impact of these interactions. The results indicated that accounting for the effects of both interactions increases the total deformation of the foundations. Additionally, the study found that adjusting the subgrade reaction modulus values (Ks) for different sections of the foundation can be a practical method to address both interaction effects simultaneously. This method also optimizes the weight of reinforcement material (Wr) by reducing it by 15% and modifying the positions and quantities of reinforcements used and considering various subgrade reaction modulus values in foundation design. [ABSTRACT FROM AUTHOR]

Published
2024
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40. Post-fire properties of lightweight 3D printed concrete containing expanded perlite.

Author

Azimi, Zahir, Mousavi, Moein, Bengar, Habib Akbarzadeh, and Javadi, Akbar A.

Subjects
LIGHTWEIGHT concrete, FLEXURAL strength, PERLITE, REINFORCED concrete, BOND strengths, COMPRESSIVE strength
Abstract

There has been an increase in construction with three-dimensional (3D) printing technology but 3D printed (3DP) structures also require weight reduction similar to conventional reinforced concrete structures. In addition, the behaviour of this type of structure against fire needs to be investigated. The number of printed layers and the time gap between layers for the 3DP specimens were among the variables examined. The test results demonstrate that as the replacement percentage of natural sand (NS) with expanded perlite (EP) increased, at 25% volume of replacement, the interlayer bond strength increased on average by 18.6%, while at the highest replacement level, of 75%, the strength decreased on average by 5.8%. Additionally, by incorporating EP, the compressive and flexural strengths of 3DP specimens declined on average from 9% to 29.7%, and from 39.3% to 49.3%, respectively. As the replacement level of NS increased, residual compressive and flexural strengths increased after exposure to 800°C. Furthermore, it was demonstrated that exposure to high temperature had the least effect on interlayer bond strength, whereas it significantly reduced the compressive and flexural strength. The results show that increasing the time gap between layers reduced interlayer bond strength and flexural strength while negligibly affecting compressive strength. [ABSTRACT FROM AUTHOR]

Published
2024
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