Research and Development

At NEBRAS, we showcase our commitment to innovation, technical excellence, and forward-thinking solutions. Here, we highlight ongoing projects, emerging technologies, and cutting-edge methodologies that drive our engineering practices. Our multidisciplinary team continuously explores new materials, design approaches, and sustainable engineering solutions to address complex challenges across various sectors. This section also serves as a hub for collaboration with academic institutions and industry partners, reinforcing our role as a leader in advancing engineering knowledge and delivering future-ready solutions for our clients.

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List of Publications

  • Elkafrawy, Mohamed, Fayed, Sabry, . "Influence of Aggregate Size and Shear-Transfer Plane Dimensions on Concrete Shear Strength." *Journal of Building Engineering* (2025): 112859. Elsevier.

  • Zuaiter, Mohammad, Khalil, Ahmed, Elkafrawy, Mohamed, Hawileh, Rami, AlHamaydeh, Mohammad, Ayman, Ahmed, Kim, Tae-Yeon, . "Effect of blending GGBS and silica fume on the mechanical properties of geopolymer concrete." *Scientific Reports* 15, no. 1 (2025): 9091. Nature Publishing Group UK London.

  • Khalil, Ahmed Mohsen, Elkafrawy, Mohamed, Hawileh, Rami, Al-Hamaydeh, Mohammad, . "Numerical Investigation on Improving Shear Strength of RC Beams with Various Web Opening Shapes Using Pre-Stressed Fe-SMA Bars." *Key Engineering Materials* 1004 (2024): 13-22. Trans Tech Publications Ltd.

  • Elkafrawy, Mohamed, Fayed, Sabry, ahmed Ramadan, Basant, . "Strengthening of RC beams defected in shear using external bonded ribs made of aluminum tube sandwich filled with strain hardening cementitious composites." *Case Studies in Construction Materials* 21 (2024): e03998. Elsevier.

  • Elkafrawy, Mohamed, AlHamaydeh, Mohammad, Zuaiter, Haya, ElMaoued, Doha, . "Improving the Structural Performance of RC Beams with Openings Using Iron-based Shape Memory Alloy (Fe-SMA) Reinforcement." *Procedia Structural Integrity* 64 (2024): 436-444. Elsevier.

  • Elkafrawy, Mohamed, Gowrishankar, Prathibha, Aswad, Nour Ghazal, Alashkar, Adnan, Khalil, Ahmed, AlHamaydeh, Mohammad, Hawileh, Rami, . "GFRP-Reinforced Concrete Columns: State-of-the-Art, Behavior, and Research Needs." *Buildings* 14, no. 10 (2024): 3131. MDPI.

  • Alashkar, Adnan, Elkafrawy, Mohamed, Hawileh, Rami, AlHamaydeh, Mohammad, . "Elastic Buckling Behavior of Functionally Graded Material Thin Skew Plates with Circular Openings." *Buildings* 14, no. 3 (2024): 572. MDPI.

  • AlHamaydeh, Mohammad, Maky, Ahmed, ElKafrawy, Mohamed, . "Probabilistic incremental dynamic analysis for seismic isolation systems through integration with the NHERI-SimCenter performance-based engineering application." *Buildings* 13, no. 6 (2023): 1413. MDPI.

  • Elkafrawy, Mohamed, Elsayed, Ahmed N, Meleka, Nageh N, . "A state-of-the-art-review on reinforced concrete beams with web openings." *ERJ. Engineering Research Journal* 46, no. 1 (2023): 119-132. Menoufia University, Faculty of Engineering.

  • Elkafrawy, Mohamed, Elsayed, Ahmed N, Meleka, Nageh N, . "Development Factors in Eco-Friendly Geopolymer Concrete-A State of the Art Review." *ERJ. Engineering Research Journal* 46, no. 1 (2023): 99-118. Menoufia University, Faculty of Engineering.

  • AlHamaydeh, Mohammad, Awera, Yousef, Elkafrawy, Mohamed, . "Axial compressive behavior of slender circular columns made of green concrete and double layers of steel and GFRP reinforcement." *Journal of Composites for Construction* 27, no. 6 (2023): 04023050. American Society of Civil Engineers.

  • Khalil, Ahmed, Elkafrawy, Mohamed, Hawileh, Rami, AlHamaydeh, Mohammad, Abuzaid, Wael, . "Numerical Investigation of Flexural Behavior of Reinforced Concrete (RC) T-Beams Strengthened with Pre-Stressed Iron-Based (FeMnSiCrNi) Shape Memory Alloy Bars." *Journal of Composites Science* 7, no. 6 (2023): 258. MDPI.

  • Elkafrawy, Mohamed, Khalil, Ahmed, AlHamaydeh, Mohammad, Hawileh, Rami, Abuzaid, Wael, . "Enhancing the shear capacity of RC beams with web openings in shear zones using pre-stressed Fe-SMA bars: Numerical Study." *Buildings* 13, no. 6 (2023): 1505. MDPI.

  • AlHamaydeh, Mohammad, Maky, Ahmed Mansour, Elkafrawy, Mohamed, . "INSPECT-SPSW: INelastic seismic performance evaluation computational tool for steel plate shear wall modeling in OpenSees." *Buildings* 13, no. 4 (2023): 1078. MDPI.

  • Khalil, Ahmed, Elkafrawy, Mohamed, Abuzaid, Wael, Hawileh, Rami, AlHamaydeh, Mohammad, . "Flexural performance of RC beams strengthened with pre-stressed iron-based shape memory alloy (Fe-SMA) bars: numerical study." *Buildings* 12, no. 12 (2022): 2228. Multidisciplinary Digital Publishing Institute.

  • Alashkar, Adnan, Elkafrawy, Mohamed, Hawileh, Rami, AlHamaydeh, Mohammad, . "Buckling analysis of functionally graded materials (FGM) thin plates with various circular cutout arrangements." *Journal of Composites Science* 6, no. 9 (2022): 277. MDPI.

  • Elkafrawy, Mohamed, Alashkar, Adnan, Hawileh, Rami, AlHamaydeh, Mohammad, . "FEA investigation of elastic buckling for functionally graded material (FGM) thin plates with different hole shapes under uniaxial loading." *Buildings* 12, no. 6 (2022): 802. MDPI.

  • AlHamaydeh, M, Elkafrawy, M, Banu, S, . "Seismic Performance and Cost Analysis of UHPC Tall Buildings in UAE with Ductile Coupled Shear Walls. Materials 2022, 15, 2888." *nan* (2022): nan. s Note: MDPI stays neutral with regard to jurisdictional claims in published ….

  • AlHamaydeh, Mohammad, Elkafrawy, Mohamed, Banu, Shaziya, . "Seismic performance and cost analysis of UHPC tall buildings in UAE with ductile coupled shear walls." *Materials* 15, no. 8 (2022): 2888. Mdpi.

  • AlHamaydeh, Mohammad, Elkafrawy, Mohamed Essam, Amin, Fouad Mostafa, Maky, Ahmed Mansour, Mahmoudi, Fardin, . "Analysis and design of UHPC tall buildings in UAE with ductile coupled shear walls lateral load resisting system." In *2022 Advances in Science and Engineering Technology International Conferences (ASET)*, 1-6. IEEE, 2022.

  • AlHamaydeh, Mohammad, Elkafrawy, Mohamed Essam, Kyaure, Muhammad, Elyas, Mutaman, Uwais, Faris, . "Cost effectiveness of UHPC ductile coupled shear walls for high-rise buildings in UAE subjected to seismic loading." In *2022 Advances in Science and Engineering Technology International Conferences (ASET)*, 1-6. IEEE, 2022.

  • Elkafrawy, Mohamed Essam, Khalil, Ahmed Mohsen, Abuzaid, Wael, Hawileh, Rami A, AlHamaydeh, Mohammad, . "Nonlinear finite element analysis (NLFEA) of pre-stressed RC beams reinforced with iron-based shape memory alloy (Fe-SMA)." In *2022 Advances in Science and Engineering Technology International Conferences (ASET)*, 1-7. IEEE, 2022.

  • AlHamaydeh, Mohammad, Elkafrawy, Mohamed Essam, Aswad, Nour Ghazal, Talo, Reem, Banu, Shaziya, . "Evaluation of UHPC tall buildings in UAE with ductile coupled shear walls under seismic loading." In *2022 Advances in Science and Engineering Technology International Conferences (ASET)*, 1-6. IEEE, 2022.

  • Khalil, AEH, Etman, EMAD, Atta, AHMED, Essam, MOHAMED, . "Strengthening of Rc Beams Subjected To Cyclic Load Using Ultra High-Performance Strain Hardening Cementitious Composites." In *Proc. Int. Struct. Eng. Constr*, 1-6. , 2020.

  • Khalil, Abd El-Hakim, Etman, Emad, Atta, Ahmed, Essam, Mohamed, . "Behavior of RC beams strengthened with strain hardening cementitious composites (SHCC) subjected to monotonic and repeated loads." *Engineering Structures* 140 (2017): 151-163. Elsevier.

  • Khalil, AEH, Etman, EMAD, Atta, AHMED, Essam, MOHAMED, . "Ductility enhancement of RC beams strengthened with strain hardening cementitious composites." In *Proc. Int. Struct. Eng. Constr*, 1-6. , 2017.

  • Khalil, Abd El-Hakim, Etman, Emad, Atta, Ahmed, Essam, Mohamed, . "Nonlinear behavior of RC beams strengthened with strain hardening cementitious composites subjected to monotonic and cyclic loads." *Alexandria Engineering Journal* 55, no. 2 (2016): 1483-1496. Elsevier.