AbdelHakim AbdelKhalik Khalil

AbdelHakim AbdelKhalik Khalil

Tanta University

H-index: 17

Africa-Egypt

AbdelHakim AbdelKhalik Khalil Information

University

Tanta University

Position

أستاذ المنشآت الخرسانية -

Citations(all)

935

Citations(since 2020)

606

Cited By

734

hIndex(all)

17

hIndex(since 2020)

12

i10Index(all)

27

i10Index(since 2020)

20

Email

University Profile Page

Tanta University

AbdelHakim AbdelKhalik Khalil Skills & Research Interests

العلوم الهندسية والإنشائية والخرسانة المسلحة

Top articles of AbdelHakim AbdelKhalik Khalil

Behavior of high-performance concrete beams having tension lap spliced anchor-ended bars under repeated loading

In the current paper, a newly developed technique in tension lap splices of steel bars is presented and investigated to verify its efficiency. Consequently, an experimental and numerical study on sixteen high-performance concrete (HPC) specimens containing lap splices without confining reinforcement were performed. The experimental program comprised two phases; the first one was a preliminary study that involved concrete prisms containing the developed splices and tested under axial tension, while the second phase was four-point flexural testing of RC beams having the adopted tension splices and subjected to repeated loading. Both phases included two sub-groups; a reference sub-group having conventional straight-ended splices and the other sub-group implicated in the newly developed technique based on anchor-ended splices. Experimental tests showed that by applying the developed technique, not …

Authors

Tarek Fawzy,Abdel-Hakim Khalil,Ahmed Atta,Hamdy M Afefy,Mohamed Ellithy

Journal

Engineering Structures

Published Date

2023/1/1

Improving the shear behavior of RC dapped-end beams using precast strain-hardening cementitious composite (P-SHCC) plates

Dapped-end beams (DEBs) are frequently used in precast concrete structures in order to facilitate the construction procedures. However, premature failure is most likely to happen at their re-entrant corner owing to the immense shearing stresses in this region. To mitigate such a problem, a new strengthening system making use of Strain-Hardening Cementitious Composites (SHCC) material was utilized in this paper. For this purpose, an experimental study on ten DEBs specimens, including one defected un-strengthened specimen (BC), was prepared and tested under a monotonic 4-point loading protocol to assess the efficiency of the adopted strengthening system. The traditional reinforcement at the re-entrant corner was substituted by precast SHCC (P-SHCC) plates to upgrade the shear strength and serviceability of the tested DEBs. The P-SHCC plates were pre-cured for about 4 weeks before being used to …

Authors

Ahmed T Baraghith,Abdel-Hakim A Khalil,Emad E Etman,Reda N Behiry

Journal

Structures

Published Date

2023/4/1

Comparative Study on the Controlling Parameters for the Effective Flange Width of RC T-beams

A virtual T-section may be formed and considered in the design process of reinforced concrete (RC) beam, when a part of the topping slab and the projecting beam acts as a single unit in resisting the flexural positive moment. Based on an extensive overview on the controlling parameters adopted by different design standards for calculating the effective flange width of the T-section,15 design codes were considered; ACI 318-14, ASC 2004, AS 3600-2017, BNBC 2015, BS 8110-1:1997, CSA A23,3-04, ECP 203-2018, Eurocode 8-2004, IRAQ 1-78, IS 456:2000, JSCE 2007, MS 2010, NZS 3101:2006, TS 500 and SBC 304-2007. The considered parameters were noticed to be varied from code to another. It was noticed that ACI 318-14, BNBC 2015, NZS 3101:2006 and SBC 304-2007 codes estimate the effective flange width regardless of distance between moment inflection points (beam continuity) inspite that others …

Authors

Mahmoud Abdelaziz,Abdel Hakim Abdel Khalik,Hamdy Afefy,Mahmoud Kotb

Journal

International Journal of Advances in Structural and Geotechnical Engineering

Published Date

2022/8/7

Flexural strength recovery of RC one-way slabs having cut-outs using NSM-SHCC plates

Creating a cut-out in an existing Reinforced Concrete (RC) slab became a common practice to allow passing facility services. This cut-out interrupts the loading trajectories resulting in the existence of weak points. Thus, the ultimate capacity of such slab including cut-out decreases with the increase of the size of the opening. In this paper, a new technique based on near-surface mounted has been employed using precast plates made of Strain-Hardening Cementitious Composites (SHCC). These SHCC plates were designed to compensate the cut reinforcement due to cut-out. The used plates had three different widths; 100, 200 and 300 mm, while their thickness was kept constant at 20 mm. One reference slab without cut-out, in addition to, nine damaged slabs with central cut-outs, were prepared and tested under incremental static loading. The tested slabs have the same dimensions; thickness = 140, effective …

Authors

Abd-Elhakim A Khalil,Ahmed M Atta,Ali Hassan,Ahmed H Abd-Elaaty

Journal

Engineering Structures

Published Date

2022/5/1

Gust load alleviation for flexible aircraft using discrete-time preview control

Turbulence and gusts cause variations in the aerodynamic forces and moments applied to the structure of aircraft, resulting in passenger discomfort and dynamic loads on the structure that it must be designed to support. By designing Gust Load Alleviation (GLA) systems, two objectives can be achieved: first, realizing higher passenger comfort; and second, reducing the dynamic structural loads, which allows the design of lighter structures. In this paper, a methodology for designing combined feedback/feedforward GLA systems is proposed. The methodology relies on the availability of a wind profile ahead of the aircraft measured by a Doppler LIDAR sensor, and is based on -optimal control techniques is introduced. The methodology developed in this paper is intended to be applied to large aircraft, e.g. transport aircraft or business jets. The simulation results show the effectiveness of the proposed design …

Authors

A Khalil,Nicolas Fezans

Journal

The Aeronautical Journal

Published Date

2021/2

Numerical simulations of collapse tests on RC beams

Recent events of bridge collapses, e.g. in Genoa (Italy) on August 14th 2018 and in Kolkata (India) on September 4th 2018, have focused the public interest on the infrastructures’ safety for their consequences in terms of fatalities and injuries, but also of economy and social losses. Indeed, focusing on reinforced concrete structural components such as beams, they are subjected during their service life to different loading conditions that may affect their durability and efficiency. This can reduce the structural safety over time until its complete degradation up to the ultimate limit state. In particular, reinforced concrete elements can develop cracking conditions due to tensile stresses that are normally absorbed by the reinforcement. However, such cracking conditions can develop and propagate leading to the exposure of the reinforced concrete element to the aggression of external agents such as chlorides up to collapse …

Authors

Marco Domaneschi,Gian Paolo Cimellaro,Giuseppe Carlo Marano,Maurizio Morgese,Cosimo Pellecchia,AA Khalil

Published Date

2021/4/19

Experimental and analytical study on tension lap splices in nonconventional concrete using different techniques

An experimental and analytical study on 15 specimens of lap splices embedded in nonconventional concrete without confining reinforcement was performed under direct tension. The experimental program involved two groups of straight‐ended and anchored‐ended bars; three different techniques were employed with different splice lengths. For straight‐ended bars, conventional lap splice was studied as a benchmark. The anchored‐ended steel bars were hooks, hooks intersecting with cross bars, and plate‐end bars. It was found that, the used techniques not only achieved higher tensile stress at failure, but also different modes of failure were observed. Besides, a splice length of five times bar diameter was found to be sufficient to achieve the nominal yield stress of the reinforcing steel bar in the case of anchored‐ended bars. Finally, an analytical model was proposed in order to predict the ultimate tensile stress …

Authors

Tarek Fawzy,Abdel‐Hakim Khalil,Ahmed Atta,Hamdy M Afefy,Mohamed Ellithy

Journal

Structural Concrete

Published Date

2021/4

Collapse analysis of the Polcevera viaduct by the applied element method

On August fourteen of 2018, a portion of the highway connection viaduct over the Polcevera Valley in Genoa, Italy collapsed, and resulted in forty-three deaths, and many injuries. In the aftermath of the tragic event, in search of answers, a number of studies focused on various scenarios pertaining to the causes of the collapse, i.e. sustained effects of fatigue and corrosion, lack of redundancy, construction abnormalities, and others. In the study reported herein, post collapse analysis of the Morandi’s Polcevera viaduct was conducted by the applied element method (AEM). AEM made it possible for step-by-step evaluation of the structural response of the bridge model to progressive reduction of the strength capacity of single macro-components. In using the proposed approach, it was not necessary to consider the factors that may have resulted in the capacity degradation of the structural elements, such as fatigue and …

Authors

M Domaneschi,C Pellecchia,E De Iuliis,GP Cimellaro,M Morgese,AA Khalil,F Ansari

Journal

Engineering Structures

Published Date

2020/7/1

AbdelHakim AbdelKhalik Khalil FAQs

What is AbdelHakim AbdelKhalik Khalil's h-index at Tanta University?

The h-index of AbdelHakim AbdelKhalik Khalil has been 12 since 2020 and 17 in total.

What are AbdelHakim AbdelKhalik Khalil's top articles?

The articles with the titles of

Behavior of high-performance concrete beams having tension lap spliced anchor-ended bars under repeated loading

Improving the shear behavior of RC dapped-end beams using precast strain-hardening cementitious composite (P-SHCC) plates

Comparative Study on the Controlling Parameters for the Effective Flange Width of RC T-beams

Flexural strength recovery of RC one-way slabs having cut-outs using NSM-SHCC plates

Gust load alleviation for flexible aircraft using discrete-time preview control

Numerical simulations of collapse tests on RC beams

Experimental and analytical study on tension lap splices in nonconventional concrete using different techniques

Collapse analysis of the Polcevera viaduct by the applied element method

are the top articles of AbdelHakim AbdelKhalik Khalil at Tanta University.

What are AbdelHakim AbdelKhalik Khalil's research interests?

The research interests of AbdelHakim AbdelKhalik Khalil are: العلوم الهندسية والإنشائية والخرسانة المسلحة

What is AbdelHakim AbdelKhalik Khalil's total number of citations?

AbdelHakim AbdelKhalik Khalil has 935 citations in total.

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