Ahmed Farouk Mohamed Hassan Deifalla

by Buthainah Nawaf AL-Kharabsheh;,Mohamed Moafak Arbili,Ali Majdi,Jawad Ahmad ; ,A. Hakamy andHasan Majed Alqawasmeh

17/11/2022

https://www.mdpi.com/2071-1050/14/22/15304

Ahmed Farouk Mohamed Hassan Deifalla

Veerendrakumar C. Khed ; Musa Adamu ;Yasser E. Ibrahim;,Marc Azab ;,Achyutha Kumar Reddy; Ahmad Hakamy

17/11/2022

https://www.mdpi.com/2075-5309/12/11/2002

Ahmed Farouk Mohamed Hassan Deifalla

Abdulrhman Mohamad Moasas, Muhammad Nasir Amin, Kaffayatullah Khan, Waqas Ahmad, Mohammed Najeeb Ahmad Al-Hashem, Ayaz Ahmad

17/11/2022

https://www.sciencedirect.com/science/article/pii/S2214509522008099

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad,,Dumitru Doru Burduhos-Nergis,Mohamed Moafak Arbili, Saleh M. Alogla, Ali Majdi

11/11/2022

https://www.mdpi.com/2075-5309/12/11/1951

Ahmed Farouk Mohamed Hassan Deifalla

03/11/2022

https://www.mdpi.com/2071-1050/14/21/14453

Ahmed Farouk Mohamed Hassan Deifalla

Hala Mamdouh; Nasr Zenhom ; Mahmoud Hasabo Amany Salman

02/11/2022

https://www.mdpi.com/2071-1050/14/21/14366

Ahmed Farouk Mohamed Hassan Deifalla

Fattouh M. F. Shaker; Mohammed S. Daif; Nehal M. Ayash

28/10/2022

https://www.mdpi.com/2071-1050/14/21/14024

Ahmed Farouk Mohamed Hassan Deifalla

27/10/2022

https://www.mdpi.com/2071-1050/14/21/14010

Ahmed Farouk Mohamed Hassan Deifalla

Buthainah Nawaf AL-Kharabsheh;Mohamed Moafak Arbil;Ali Majdi; Saleh M. Alogla; A. Hakamy; Jawad Ahmad

20/10/2022

https://www.mdpi.com/1996-1944/15/20/7350

Ahmed Farouk Mohamed Hassan Deifalla

Yudong Qiu,,Zhan Wang ,Jianrong Pan,Fangxin Hu, Shubham Sharma

19/10/2022

https://www.mdpi.com/2075-5309/12/10/1735

Ahmed Farouk Mohamed Hassan Deifalla

Buthainah Nawaf AL-Kharabsheh,,Mohamed Moafak Arbili,Ali Majdi,Jawad Ahmad

18/10/2022

https://www.mdpi.com/1996-1944/15/20/7282

Ahmed Farouk Mohamed Hassan Deifalla

Ali Raza ;Noha Saad; Khaled Mohamed Elhadi; Marc Azab; Ahmed Babeker Elhag; Khawar Ali

17/10/2022

https://www.mdpi.com/2075-5309/12/10/1715

Ahmed Farouk Mohamed Hassan Deifalla

Memduh Karalar;Yasin Onuralp Özkılıç;Ceyhun Aksoylu;Musa Hakan Arslan;Mahmood Ahmad; Mohanad Muayad Sabri Sabri

09/10/2022

https://www.mdpi.com/2071-1050/14/19/12660

Ahmed Farouk Mohamed Hassan Deifalla

Hala Mamdouh ,Ashraf M. Ali ,,Mostafa A. Osman ,Ahmed F. Deifalla and Nehal M. Ayash

28/09/2022

https://www.mdpi.com/2075-5309/12/10/1554

Ahmed Farouk Mohamed Hassan Deifalla

Aditya Kumar Tiwary; Sandeep Singh; Raman Kumar;Kamal Sharma;Jasgurpreet Singh Chohan;,Shubham Sharma ; Singh,Jatinder Kumar

26/09/2022

https://www.mdpi.com/2073-4360/14/19/4024/htm

Ahmed Farouk Mohamed Hassan Deifalla

by Jawad Ahmad 1,*ORCID,Sallal R. Abid 2ORCID,Mohamed Moafak Arbili 3ORCID,Ali Majdi 4ORCID,A. Hakamy 5

24/09/2022

https://www.mdpi.com/2071-1050/14/19/12075

Ahmed Farouk Mohamed Hassan Deifalla

Fahid Aslam;Majed Alzara;Taha Ibrahim;Ahmed M. Yosri

11/09/2022

https://www.mdpi.com/2073-4360/14/18/3799

Ahmed Farouk Mohamed Hassan Deifalla

Mohamed Moafak Arbili;Muwaffaq Alqurashi;Ali Majdi; Jawad Ahmad.

08/09/2022

https://www.mdpi.com/1996-1944/15/18/6236/htm

Ahmed Farouk Mohamed Hassan Deifalla

Amr El-said ; Ahmed Awad ; Mahmood Ahmad; Mohanad Muayad Sabri Sabri; Maged Tawfik

07/09/2022

https://www.mdpi.com/2071-1050/14/18/11181

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad; Ali Majdi; Mohamed Moafak Arbili and; Muhammad Tayyab Naqash

07/09/2022

https://www.mdpi.com/2075-5309/12/9/1401

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad,; Mohamed Moafak Arbili;, Ali Majdi,; Fadi Althoey,; Cut Rahmawati

06/09/2022

https://journals.sagepub.com/doi/full/10.1177/15589250221121871

Ahmed Farouk Mohamed Hassan Deifalla

Abdul Basit Ali; ,Muhammad Burhan Sharif; Muhammad Irfan-ul-Hassan; Yasir Iqbal;Usman Akmal; Hisham Alabduljabba;

17/08/2022

https://www.mdpi.com/1996-1944/15/16/5654

Ahmed Farouk Mohamed Hassan Deifalla

NiveenBadra; S.Y.Aboul Haggag

13/08/2022

https://www.sciencedirect.com/science/article/abs/pii/S0263224122009289

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad;Zhiguang Zhou; Ali Majdi; Muwaffaq Alqurashi

11/08/2022

https://www.mdpi.com/1996-1944/15/16/5518

Ahmed Farouk Mohamed Hassan Deifalla

Fattouh M.F. Shaker,; Gouda M. Ghanem,; ;Ibrahim S. Hussein; Mona M. Fawzy

10/08/2022

http://www.techno-press.org/content/?page=article&journal=scs&volume=44&num=3&ordernum=1

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad ;,Ali Majdi; Haytham F. Isleem and Cut Rahmawati

27/07/2022

https://www.mdpi.com/1996-1944/15/15/5196

Ahmed Farouk Mohamed Hassan Deifalla

Dong Zheng; Rongxing Wu; Muhammad Sufian; Nabil Ben Kahla; Miniar Atig; Marc Azab

27/07/2022

https://www.mdpi.com/1996-1944/15/15/5194

Ahmed Farouk Mohamed Hassan Deifalla

26/07/2022

https://www.scientific.net/KEM.927.209

Ahmed Farouk Mohamed Hassan Deifalla

Fattouh M. F. Shaker; Kyrolos Zarzor; Sameh Gaawan; Mohamed Salem

26/07/2022

https://www.mdpi.com/2075-5309/12/8/1093

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad ;Roberto Alonso González-Lezcano;; Ali Majd; Nabil Ben Kahla; Mohammed A. El-Shorbagy

22/07/2022

Glass Fibers Reinforced Concrete: Overview on Mechanical, Durability and Microstructure Analysis

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad ;Karolos J. Kontoleon; Majdi;Muhammad Tayyab Naqash; Nabil Ben Kahla 6,Haytham F. Isleem; andShaker M. A. Qaidi

18/07/2022

https://www.mdpi.com/2071-1050/14/14/8783

Ahmed Farouk Mohamed Hassan Deifalla

13/07/2022

https://link.springer.com/chapter/10.1007/978-981-19-4293-8_37

Ahmed Farouk Mohamed Hassan Deifalla

13/07/2022

https://link.springer.com/chapter/10.1007/978-981-19-4293-8_31

Ahmed Farouk Mohamed Hassan Deifalla

11/07/2022

https://link.springer.com/chapter/10.1007/978-981-19-2394-4_64

Ahmed Farouk Mohamed Hassan Deifalla

Chuan He; Shiyu Zhang; Youwang Liang; Waqas Ahmad; Fadi Althoey; Saleh H. Alyami; Muhammad Faisal Javed

08/07/2022

https://www.mdpi.com/1996-1944/15/14/4796

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad; Ali Majdi; Nabil Ben Kahla; Mohammed A. El-Shorbagy

07/07/2022

https://www.mdpi.com/2073-4352/12/7/952

Ahmed Farouk Mohamed Hassan Deifalla

Jawad Ahmad; Ali Majdi Ahmed; Babeker Elhag; Mahfooz Soomro; Haytham F. Isleem ; Shaker Qaidi

05/07/2022

A Step towards Sustainable Concrete with Substitution of Plastic Waste in Concrete: Overview on Mechanical, Durability and Microstructure Analysis

Ahmed Farouk Mohamed Hassan Deifalla

24/06/2022

chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://avestia.com/ICCSTE2022_Proceedings/files/paper/ICCSTE_154.pdf

Ahmed Farouk Mohamed Hassan Deifalla

24/06/2022

chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://avestia.com/ICCSTE2022_Proceedings/files/paper/ICCSTE_203.pdf

Ahmed Farouk Mohamed Hassan Deifalla

Qichen Wang; Abasal Hussain; Muhammad Usman Farooqi

19/06/2022

https://www.sciencedirect.com/science/article/pii/S2214509522003758?via%3Dihub

Ahmed Farouk Mohamed Hassan Deifalla

Yongjian Li; Qizhi Zhang; Paweł Kamiński;Muhammad Sufian,; artur Dyczko; Nabil Ben Kahla; Miniar Atig

14/06/2022

https://www.mdpi.com/1996-1944/15/12/4209

Ahmed Farouk Mohamed Hassan Deifalla

Fattouh M. F. Shaker; Zekriat Mamdooh;Mohamed M. Yehia

12/06/2022

https://www.mdpi.com/2075-5309/12/6/812

Ahmed Farouk Mohamed Hassan Deifalla

Maged Tawfik; Amr El-said; Ahmed Awad

12/06/2022

https://www.mdpi.com/2079-6439/10/6/53

Ahmed Farouk Mohamed Hassan Deifalla

06/06/2022

https://www.sciencedirect.com/science/article/pii/S2214509522003412?via%3Dihub

Ahmed Farouk Mohamed Hassan Deifalla

Kareem S. Ghareeb; Hossam E. Ahmed;Tamer H. El-Affandy,;Taha A. El-Sayed

20/05/2022

https://www.mdpi.com/2075-5309/12/5/684

Ahmed Farouk Mohamed Hassan Deifalla

Zhongjie Shen; Paweł Kamiński; Artur Dyczko

13/05/2022

https://www.mdpi.com/1996-1944/15/10/3523/htm

Ahmed Farouk Mohamed Hassan Deifalla

Faisal M Mukhtar

12/05/2022

https://journals.sagepub.com/doi/full/10.1177/13694332221098869

Ahmed Farouk Mohamed Hassan Deifalla

12/05/2022

https://www.mdpi.com/2073-4360/14/9/1824

Ahmed Farouk Mohamed Hassan Deifalla

01/05/2022

https://www.mdpi.com/1996-1944/15/8/2732

Ahmed Farouk Mohamed Hassan Deifalla

Faisal Mukhtar

29/04/2022

https://www.nature.com/articles/s41598-022-11577-y

Ahmed Farouk Mohamed Hassan Deifalla

20/04/2022

https://www.mdpi.com/2073-4360/14/9/1743

Ahmed Farouk Mohamed Hassan Deifalla

07/04/2022

https://www.mdpi.com/2073-4360/14/8/1517

Ahmed Farouk Mohamed Hassan Deifalla

28/03/2022

https://www.sciencedirect.com/science/article/pii/S2214509522000572

Ahmed Farouk Mohamed Hassan Deifalla

01/01/2021

There is very little guidance for practitioners regarding the torsion design of fiber-reinforced polymer (FRP) and hybrid reinforced concrete beams, especially those with fibered concrete (FC). The purpose of this study is to improve the handful of methods used for predicting the torsion cracking and ultimate strength of reinforced concrete (RC) beams with FRP reinforcements. An experimental database of 46 RC beams with FRP or hybrid reinforcements and tested under torsion were compiled from seven different studies. Two proposed models (PM1 and PM2) based on the existing torsional model for FRP reinforced concrete beams and calibrated to fit the experimental data using multilinear non-linear regression. The cracking and ultimate torque predicted using the proposed models are more accurate compared with that calculated using selected ones existing in the literature. The PM1 is consistent with the existing design codes, yet more accurate compared to them. While the PM2 is non-iterative yet capture the actual variation of the strength with the effective parameters.

Ahmed Farouk Mohamed Hassan Deifalla

01/11/2020

Developing design models that are accurate compared to experimentally measured strength, yet physically sound, continues to be the ultimate research goal. For this purpose, the two-way shear design provisions of the American design codes have been updated. While that of the European design codes are being investigated. The two-way shear failure of slabs is a sudden one, which can be catastrophic. In addition, lightweight concrete (LWC) is gaining a lot of attention due to its economic advantage, however, very limited studies focus on investigating LWC slabs under two-way shear loading. The purpose of this study is to examine existing design codes and ongoing proposals for the case of LWC slabs under two-way shear. A comprehensive literature review of the available two-way shear testing for LWC slabs was conducted. An extensive database with a total of 129 tested LWC slabs was compiled. Selected design codes were used to calculate the two-way shear strength of the tested slabs. The Strength ratio (SR) was compared for selected codes, which is calculated as the ratio between the experimentally measured strength and that calculated using different design codes. In addition, the effect of various parameters on the SR was assessed. Concluding remarks were outlined and discussed. Moreover, a design formula for LWC slabs under two-way shear, which is physically sound and simple was developed and validated using experimental results. It was found to be more accurate, and more consistent compared to existing design codes with regard to experimentally measured strength. It is worth noting, that the investigated draft of the Eurocode is not final. However, these findings could help develop future design provisions for two-way shear of LWC slabs, which have to be physically sound, more consistent, and more accurate compared to existing one.

Ahmed Farouk Mohamed Hassan Deifalla

01/10/2020

Preventing a sudden punching failure and achieving an economic design, require reliable mechanical models that make physical sense. In addition, Lightweight (LW) concrete is gaining a lot of attention due to its economic advantage. Moreover, all design codes offer punching shear provisions for LW concrete as a viable alternative for the conventional Normal weight (NW) concrete. However, these punching shear provisions were developed for NW concrete slabs. The purpose of this study is to develop a mechanical model for the punching shear behavior of LW concrete slabs, that make physical sense. Inspired with the well-established critical shear crack theory, a punching shear mechanical model for LW concrete slabs was developed, validated, and proposed. In addition, using the proposed model, a parametric study was conducted in order to investigate the effect of concrete density, slab depth, flexure reinforcement ratio on the strength and ductility of LW concrete slabs under punching loads. The proposed model accounted for the effect of concrete type using both the aggregate size and the concrete density. Thus, resulted in a more consistent and more accurate strength and rotation predictions compared to existing models and design codes with respect to the experimental results of LW concrete slabs. The results of the parametric study showed that increasing the concrete density, decreasing the slab depth leads to an increase in the failure strength, the failure rotation, and the ductility. In addition, increasing the flexure reinforcement ratio increase the strength but decreases the failure rotation and ductility.

Ahmed Farouk Mohamed Hassan Deifalla

Awad A, Elrahman AA, Seleem H

01/09/2020

Compared to conventional normal weight concrete, Lightweight Concrete (LWC) has significantly lower own-weight-to-strength ratio and good thermal insulation. Previous studies showed that the design codes underestimate the strength of LWC beams under pure shear force or pure torsion moment. In addition, the behavior and design of LWC T-beams under combined bending, shear and torsion was never investigated. Thus, this current study explores the effect of various parameters on the behavior of lightweight foamed concrete (LWFC) T-beams under combined shear, torsion and moment. Investigated parameters included the following: shear-span-to-depth ratio, torsion-to-shear-depth ratio, flange-to-web-width ratio, and transversal reinforcement ratio. An experimental program was conducted which included testing five T-beams under various ratios of combined loading. In addition, a numerical model was developed for LWFC T-beams under combined loading and verified using available experimental results. Moreover, a parametric study was performed to further investigate the effect of the selected parameters on the behavior of LWFC T-beams. Last but not least, the most recent internationally recognized design code is selected and used to calculate the T-beams strength, which was compared with the ones from the experimental and numerical investigations. For small values of the shear-span-to-depth ratio, the LWFC T-beams strength increased with the decrease of the torsion-to-shear-depth ratio compared to those with large values of the shear-span-to-depth ratio. In addition, the effect of the flange width was found to be insignificant. Moreover, the failure mode for beams with transversal reinforcement ratio above 1.2%, changed from under-reinforced mode to an over-reinforced one. Last but not least, the strength predicted using selected design code was found to be overly conservative compared to that experimentally measured and that numerically predicted for LWFC T-beams under combined loading.

Ahmed Farouk Mohamed Hassan Deifalla

Saleh A, Fathy A, Moaz Nasser M

01/02/2019

Seven full-scale reinforced concrete corbel specimens were tested to study performance of steel fiber reinforced concrete corbels with and without fibers were investigated. The test variables were steel fiber content (Vf %) and shear span-to-depth ratio (a/d), which Constants of concrete compressive strength (fcu), area of main steel reinforcement (As) and presence of horizontal stirrups. Test results showed that, addition of steel fibers or/and horizontal stirrups improves both shear strength and ductility of the tested corbels, and results in a more ductile failure mode. The Experimental results observed that the ultimate strength of reinforced concrete corbels along with fibers can be predicted by adding the fibers contribution to strength using the shear friction equation to the ACI Building Code provisions. It is found that considerable improvement in ultimate shear strength and first crack in the corbels. This study shows that there is a considerable increase in the ultimate shear strength of steel fiber reinforced concrete corbels is obtained by the addition of steel fibers for a specific range and with a fiber content of 1,2 and3 percent, an increase in the shear strength was obtained and decrease shear span to depth ratio from 0.80 to 0.65.

Ahmed Farouk Mohamed Hassan Deifalla

Fattouh F M, Fawzy M M and Hussein I S

01/01/2019

Concrete-filled steel tubular (CFST) beam-columns are widely used owing to their good performance. They have high strength, ductility, large energy absorption capacity and low costs. Externally stiffened CFST beam-columns are not used widely due to insufficient design equations that consider all parameters affecting their behavior. Therefore, effect of various parameters (global, local slenderness ratio and adding hoop stiffeners) on the behavior of CFST columns is studied. An experimental study that includes twenty seven specimens is conducted to determine the effect of those parameters. Load capacities, vertical deflections, vertical strains and horizontal strains are all recorded for every specimen. Ratio between outer diameter (D) of pipes and thickness (t) is chosen to avoid local buckling according to different limits set by codes for the maximum D/t ratio. The study includes two loading methods on composite sections: steel only and steel with concrete. The case of loading on steel only, occurs in the connection zone, while the other load case occurs in steel beam connecting externally with the steel column wall. Two failure mechanisms of CFST columns are observed: yielding and global buckling. At early loading stages, steel wall in composite specimens dilated more than concrete so no full bond was achieved which weakened strength and stiffness of specimens. Adding stiffeners to the specimens increases the ultimate load by up to 25% due to redistribution of stresses between stiffener and steel column wall. Finally, design equations previously prepared are verified and found to be only applicable for medium and long columns.