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Dr Mohamed ElGawady 

Position: Adjunct Senior Lecturer
Division/Portfolio: Division of Information Technology, Engineering and the Environment
School/Unit: School of Natural and Built Environments
Campus: Mawson Lakes Campus
Office:
Telephone:
Fax:
Email: Mohamed_dot_ElGawady_at_unisa_dot_edu_dot_au
URL for Business Card: http://people.unisa.edu.au/Mohamed.ElGawady


Other Contacts

Currently, Associate Professor at Missouri University of Science and Technology, USA
elgawadym@mst.edu
http://people.mst.edu/faculty/elgawadym_profile.html: 


My Google Scholar Citations

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Teaching interests

  • Earthquake Engineering
  • Structural Dynamics
  • Masonry Structures
  • Concrete Structures
  • Structural Analysis
  • Prestressed Concrete
  • Introduction to Sustainability
  • Steel Design

I teach the following courses

CIVE 2003Structural Engineering 1
(This course is not currently being taught)
CIVE 3003Reinforced Concrete Design
CIVE 4036Earthquake and Masonry Engineering
CIVE 4034Advanced Concrete Structures


Research interests

  • Current Graduate Students

  • Osama Elsaid, PhD, In-progress (UNISA), Sustainable segmental construction of bridge piers.
  • Reza Hassanli, PhD, In-progress (UNISA), Shear strength of partially grouted masonry walls.
  • Former Graduate Students

  • M. Abebaw, MSC, 2008, Seismic Retrofit of Rectangular Bridge Columns using CFRP Wrapping
  • AJ Booker, 2008, Performance of continuous and segmented post-tensioned concrete filled fiber tubes
  • R. Shafiei, MSC, 2008, Nonlinear dynamic and static analysis of I-5 Ravenna bridge
  • A. Shalaan, MSC, 2009, Seismic performance of self-centering frames composed of precast post-tensioned concrete encased in FRP tubes
  • A. Kuper, MSC, 2009, Detection of delaminations of FRP retrofitted reinforced concrete columns
  • S. Nolph, MSc, 2010, In-plane shear performance of partially grouted masonry shear walls
  • J. Elmaprouk, MSC, 2010, Seismic behavior of squat masonry shear walls
  • H. Dawood, MSc, 2010, Seismic behavior and design of segmental precast post-tensioned concrete piers
  • M. Rai, MSc, 2010, Time domain probabilistic seismic demand analysis of self centering bridges under near fault ground motions

Research publications


Journal Papers


Dawood*, H., ElGawady, M. A., and Hewes, J. 2012. “Behavior of Segmental Precast Post-Tensioned Bridge Piers under Lateral Loads”, J. Bridge Engineering, ASCE, 17(4).

Ichikawa, S., Zhang, R., Sasaki, T., Kawashima, K., ElGawady, M., Matsuzaki, H., And Yamanobe, S.,2012 (accepted). "Seismic performance of UFC segmental columns" J. of Japan Society of Civil Engineering A1 (In-Japanese)

ElGawady, M. A., and Nolph*, S., 2012. “Performance of partially grouted masonry shear walls”, J. Structural Engineering, ASCE, 138(7)

ElGawady, M. A. and Dawood*, H. 2012. “Finite element analysis of self-centering bridge piers”, Engineering Structures, 38, pp. 142-152

ElGawady, M. A. and Shafiei*, R., 2011. “Pushover analysis of the I-5 Ravenna bridge”, Electronic J. of Structural Engineering, 11, 32-41.

ElGawady, M. A., and Shalaan*, A., 2011. “Seismic behavior of self-centering precast segmental bridge bents”, J. Bridge Engineering, ASCE, 16(3), 328-339.

ElGawady, M. A., Ma, Q., Ingham, J., and Butterworth J., 2011. “Effects of interface material on the performance of free rocking blocks”, J. Earthquake Engineering and Structure Dynamics, 40(4), 375-392.

Sehhati**, R., Rodriguez-Marek, A., ElGawady, M., Cofer, W. 2011. “Effects of near-fault ground motions and equivalent pulses on multi-story structures” J. Engineering Structures, 33(3), 767-779.

ElGawady, M. A., Booker*, A. J., and Dawood*, H., 2010. “Seismic behavior of posttensioned concrete-filled fiber tubes”, J. Composite for Const., ASCE, 14(5), pp. 616-628.

ElGawady, M. A., Endeshaw*, M., McLean, D., and Sack R., 2010. “Retrofitting of rectangular columns with deficient lap splices”, J. Composite for Const., ASCE, 14(1), pp. 1-14.

ElGawady, M. A., Lestuzzi, P., and Badoux, M., 2007 “Static cyclic response of masonry walls retrofitted with fiber reinforced polymers”, J. of Composite for Const., ASCE, 11(1), pp. 50-61.

ElGawady, M. A., Lestuzzi, P., and Badoux, M., 2006. “Shear strength of URM walls retrofitted using FRP”, Engineering Structures, 28(12), pp. 1658-1670.

ElGawady, M. A., Lestuzzi, P., and Badoux, M., 2006. “Analytical model for the in-plane shear behavior of URM walls retrofitted with FRP”, J. of Composites Science and Technology, 66(3-4), pp. 459-474.

ElGawady, M. A., Lestuzzi, P., and Badoux, M., 2006. “Aseismic retrofitting of unreinforced masonry walls using FRP”, Journal of Composites Part B: Engineering, 37(2-3), pp. 148-162.

ElGawady, M. A., Lestuzzi, P., and Badoux, M., 2005. “Performance of URM walls under in-plane seismic loading”, The Masonry Society (TMS) J., 28 (1), pp. 95-114.

ElGawady, M. A., Lestuzzi, P., and Badoux, M., 2005. “In-plane seismic response of URM walls upgraded with FRP”, J. Composite for Const., ASCE, 9(6), pp. 524-535.


Recent Conference Papers


Kawashima, K., Ichikawa, S., Sasaki, T., ElGawady, M. A., Matsuzaki, H., and Yamanobe, S., 2012. “Effect of UFC segments for enhancing the seismic performance of bridge columns” 15th World Conference Earthquake Engineering, Sept. 24 – 28, Lisbon, Portugal.

Ryu, D., Wijeyewickrema, A. C. and ElGawady, M. A., 2012. “Finite element modeling of unbonded post-tensioned masonry walls”, 1st Australasia and South-East Asia Structural Engineering and Construction Conference, Nov 28 – Dec 2, Perth, Australia.

Youssf, O., ElGawady, M. A., 2012. “An overview of sustainable concrete made with scrap rubber” 22nd Australasian Conference on the Mechanics of Structures and Materials ACMSM 22, 11-14 Dec., Sydney, NSW, Australia.

ElGawady, M. A., and Dawood, H., 2012. “Design of unbonded precast post-tensioned piers constructed using concrete filled FRP tubes” 1st Australasia and South-East Asia Structural Engineering and Construction Conference, Nov 28-Dec 2, Perth, Australia.

Hassanli, R., ElGawady, M., 2012. “Comparisons between shear strength predictions of partially grouted masonry walls in Australian & international standards”, Australian Structural Engineering Conference, 11-13 July, Perth, WA, Australia.

Zhang, R., Sasaki, T., ElGawady, M. A., Kawashima, K., and Matsuzaki, H., 2011. “Seismic performance of UFC jacket piers” 14th Symposium on Performance-based Seismic Design Method for Bridges, July 28, 17-24, Tokyo.

Ryu***, D., Wijeyewickrema, A. C. and ElGawady, M., 2011. "Finite element analysis of post-tensioned brick masonry walls", 66th JSCE Annual Meeting, September 07-09, Ehime, Japan.

Ichikawa, S., Sasaki, T., Kawashima, K., ElGawady, M. A., and Matsuzaki, H., 2011. “Seismic resistance of bridge piers using segmented UFC” 8th Annual Meeting of Japan Association for Earthquake Engineering, Tokyo, Nov. 11, Vol. 8, 202-203, Tokyo (in Japanese).

Ichikawa, S., Rui, Z., Sasaki, T., Kawashima, K., ElGawady, M. A., Matsuzaki, H., Shinji, Y., 2011. “Seismic resistance of UFC segmented bridge piers” 14th Symposium on Performance-based Seismic Design Method for Bridges, July 28, 9-16, Tokyo (in Japanese).

ElGawady, M. A., Nolph*, S., 2011. “Seismic performance of partially grouted masonry shear walls” 11th North American Masonry Conference, Minneapolis, USA.

Ichikawa, S., Sasaki, T., Kawashima, K., ElGawady, M., A., 2011. “Seismic behavior of bridge piers using segmented UFC” 31st Earthquake Engineering Research Conference, Tokyo, Nov. 17, Vol. 31, Paper No. 3-085 (in Japanese).

ElGawady, M. A., and Elmapruk, J.*, 2011. “Experimental shear strength of squat masonry shear walls”, 8th International Conference on Urban Earthquake Engineering, Tokyo, March 7-8.

ElGawady, M. A., Shalaan*, A., 2010. “Seismic behavior of segmented frames” 9th US National and 10th Canadian Conference on Earthquake Engineering, Toronto, Canada, 25-29 July.

ElGawady, M. A., and Dawood* H., 2010. “Finite element modeling of segmented columns under lateral loading” 9th US National and 10th Canadian Conference on Earthquake Engineering, Toronto, Canada, 25-29 July.

Sehhati**, R., Rodriguez-Marek, A., Cofer, W., and ElGawady, M., 2010. “Response of multi-story structures to near-fault ground motions and equivalent pulses” 9th US National and 10th Canadian Conference on Earthquake Engineering, Toronto, Canada, 25-29 July.

ElGawady, M. A., and Dawood* H., 2010. “Finite element modeling of segmented columns under lateral loading” 9th US National and 10th Canadian Conference on Earthquake Engineering, Toronto, Canada, 25-29 July.

ElGawady, M. A., Elmapruk* J., 2009. “In-plane shear strength of partially grouted masonry walls”, 11th Canadian Masonry Symposium, Toronto, Canada, May 31 - Jun 3.

ElGawady, M. A., and Dawood* H., 2009. “Lateral displacement of rectangular reinforced concrete columns retrofitted using FRP”, 9th International Symposium on Fiber Reinforced Polymer Reinforcement for Concrete Structures. Sydney, Australia, July 13-15.

ElGawady, M. A., and Booker*, A. J., 2009. “Static cyclic response of concrete filled FRP tubes”, 9th International Symposium on Fiber Reinforced Polymer Reinforcement for Concrete Structures. Sydney, Australia, July 13-15.

ElGawady, M. A., Omervic**, B., Greifenhagen C., and Lestuzzi P., 2009. "In-plane static cyclic response of strengthened masonry walls with an opening and a rigid diaphragm”, International Symposium on Fiber Reinforced Polymer Reinforcement for Concrete Structures. Sydney, Australia, July 13-15.

Greenwood**, S., ElGawady, M., Cofer, W., McLean, D., 2009. “Performance of hollow core prestressed concrete piles under lateral loading” 88th TRB Annual Meeting, Washington D. C., January 11-15.

Greenwood**, S., Cofer, W., ElGawady, M., McLean, D., 2008. “Finite element modeling of hollow precast prestressed reinforced concrete piles” PCI-FHWA National Bridge Conference, Orland, FL, October 5-8.

Endeshaw*, M., ElGawady, M., Sack R., McLean, D., 2008. “Retrofitting OF rectangular columns using CFRP” the 5th Middle East Symposium on Structural Composites for Infrastructure Application MESC-5, Hurghada, Egypt, May 20-23.

ElGawady, M., Endeshaw*, M., 2008. “Codes and provisions for retrofitting of concrete columns using FRP” the 5th Middle East Symposium on Structural Composites for Infrastructure Application MESC-5, Hurghada, Egypt, May 20-23.

ElGawady, M. A., 2006. “Verifications of shear strength of masonry walls retrofitted with FRP”, 19th Biennial Conference on the Mechanics of Structures and Materials, Christchurch, New Zealand, November 29- December 1.

ElGawady, M. A., Ma, Q., Ingham, J., and Butterworth, J., 2006. “Rocking response of post-tensioned rigid blocks”, 19th Biennial Conference on the Mechanics of Structures and Materials, Christchurch, New Zealand, November 29- December 1.

ElGawady, M. A., Ma, Q., Butterworth, J. and Ingham, J., 2006. “Rocking response of solid blocks on rigid and flexible foundations” 7th International Masonry Conference, London, UK, October 30/November 1.

ElGawady, M. A., Ma, Q., Butterworth, J., and Ingham, J., 2006. “Probabilistic approach to the rigid body rocking problem”, 1st International Conference on Restoring of Heritage Masonry Structures, Cairo, Egypt, April 24-27.

ElGawady, M. A., Lestuzzi, P., and Badoux, M., 2006. “Retrofitting of masonry walls using shotcrete”, New Zealand Society of Earthquake Engineering Annual Conference, Napier, New Zealand, March 10-12.

ElGawady, M. A., Ma, Q., Ingham, J., and Butterworth, J., 2006. “Probabilistic analysis of rocking blocks”, New Zealand Society of Earthquake Engineering Annual Conference, Napier, New Zealand, March 10-12.

ElGawady, M. A., Ma, Q., Ingham, J., and Butterworth J., 2006. “The effect of interface material on the dynamic behavior of free rocking blocks”, 8th U.S. National Conference of Earthquake Engineering, San Francisco, California, USA, April 18-22.


Community Service

Organisation Name:   National Science Foundation
Section:   NEES
Type of Organisation:   Government Board or committee
Level of involvement:   Expert panel member
Year from:   2010
Year to:   2010

Organisation Name:   Czech Science Foundation
Type of Organisation:   Government Board or committee
Level of involvement:   Expert panel member
Year from:   2010
Year to:   2010

Organisation Name:    University Transportation Research Centers
Section:   Region 2
Type of Organisation:   Government Board or committee
Level of involvement:   Evaluator
Year from:   2008
Year to:   2010

Organisation Name:   Qatar National Research Fund
Type of Organisation:   Government Board or committee
Level of involvement:   Evaluator
Year from:   2011

Organisation Name:   Japan Society of Civil Engineering (JSCE)
Section:   Christchurch earthquake mission of reconnaissance
Type of Organisation:   Professional organisation
Level of involvement:   Member
Year from:   2011
Year to:   2011

Organisation Name:   10th International Conference Structural Repairs and Maintenance of Heritage Architecture
Section:   Prague, Czech Republic
Type of Organisation:   Professional organisation
Level of involvement:   International Scientific Advisory Committee
Year from:   2007
Year to:   2007

Organisation Name:   5th Conference on Earthquake Resistant Engineering Structures
Section:   Bologna, Italy
Type of Organisation:   Professional organisation
Level of involvement:   International Scientific Advisory Committee
Year from:   2007
Year to:   2007

Organisation Name:   11th North American Masonry Conference
Section:   Minneapolis, USA
Type of Organisation:   Professional organisation
Level of involvement:   Technical committee
Year from:   2011
Year to:   2011

Organisation Name:   9th US National and 10th Canadian Conference on Earthquake Engineering
Section:   Toronto, Canada
Level of involvement:   Session Chairman
Year from:   2010
Year to:   2010


Research Degree Supervisor

Seismic Retrofit of Rectangular Bridge Columns using CFRP Wrapping

Current Projects:

In-plane shear performance of partially grouted masonry shear walls
 This research investigated the shear behavior of five full-scale partially grouted masonry shear walls (PG-MWs). The walls were built using concrete masonry units and having horizontal reinforcement ratios ranging from 0.085% to 0.169%. The specimens had horizontal spacing between vertical grouted cells ranging from 610 mm (24 in.) to 1219 mm (48 in.). All the specimens were tested under constant gravity load and incrementally increasing in-plane loading cycles. This research showed that there appears to be a maximum horizontal reinforcement ratio after which no additional shear capacity is achieved. Based on the experimental results, the maximum value appears to be approximately 0.1% for specimens having horizontal spacing between vertical grouted cells of 1219 mm (48 in.). Increasing the horizontal reinforcement beyond this level did not increase the shear strength of the test specimens. In addition, the current provisions of the Masonry Standards Joint Committee (MSJC), New Zealand Code for Masonry Structures, Fattal’s model, and strut and tie model were used to predict the shear strengths of the tests specimens. The current MSJC shear equations over-estimated the strength of PG-MWs having horizontal spacing between vertical grouted cells of 1219 mm (48 in.). A significant source of this error is from over-estimating the contribution of the horizontal reinforcement. In addition, the current MSJC equations overestimated the masonry contribution to the shear strength of PG-MWs. For partially grouted walls with horizontal spacing between vertical grouted cells of 813 mm (32 in.), or less, and a horizontal reinforcement ratio of 0.085%, the MSJC shear equations are adequate. Shear equations by other codes and researchers were unconservative, as well. The strut and tie models were able to predict the shear strength of the test specimens within 16%.
Performance of continuous and segmented post-tensioned concrete filled fiber tubes
 Precast segmental construction technique is an excellent candidate for economic rapid bridge construction in highly congested urban environments and environmentally sensitive regions. This paper presents the seismic behavior of four hybrid segmental columns consisting of precast posttensioned concrete-filled fiber tubes (PPT-CFFTs). A fifth monolithic column was also tested as a reference specimen. The columns were tested under increasing lateral loading cycles in a displacement control. The columns had circular cross section diameters of 203 mm and heights of 1,524 mm each. The parameters investigated included different construction details and energy dissipation systems. The PPT-CFFT columns developed lateral strength and deformation capacity comparable to those of the monolithic reinforced concrete column. However, the PPT-CFFT columns dissipated smaller hysteretic energy compared to that of the monolithic reinforced concrete column. Finally, a simple model was used to predict the backbone curves of segmental columns. The model was conservative and it predicted approximately 75% of the measured ultimate strength and displacement.
Seismic performance of self-centering frames composed of precast post-tensioned concrete encased in
 This paper presents the cyclic behavior of four self-centering bridge bents with different construction details, including external energy dissipaters and neoprene isolation. The columns of these bents consisted of precast posttensioned concrete-filled fiber tubes (PPT-CFFT). A fifth monolithic moment resisting concrete bent was also tested as a reference specimen. The tests showed that PPT-CFFT bents can be used in bridge construction as a lateral load resistance system. The PPT-CFFT bents without external energy dissipaters displayed a lateral drift of approximately 9.2% without experiencing significant damage or residual displacement. The PPT-CFFT specimen with external energy dissipaters reached a drift angle of 9.2% with some damage. The reinforced concrete specimen failed at a drift angle of approximately 6.9% with substantial damage and residual displacement.
Seismic Retrofit of Rectangular Bridge Columns using CFRP Wrapping
 The cyclic behavior of eight 0.4-scale reinforced concrete column specimens is investigated. The columns incorporated deficient design details to simulate bridge columns built in Washington State prior to 1971. Two columns were tested as reference specimens, five were tested after retrofitting using carbon fiber-reinforced polymer (CFRP), and one was tested after retrofitting using a conventional steel jacket. All the specimens were tested under constant gravity load and incrementally increasing lateral loading cycles. The specimens had rectangular cross sections with aspect ratios of 1.5 and 2.0. The parameters investigated included the amount of CFRP reinforcement, different retrofitting jacket configurations, and different retrofitting materials. For the as-built specimens, two modes of failure occurred, namely low cyclic fatigue of longitudinal reinforcement and lap splice failure. For the retrofitted specimens, no lap splice failure was observed. All the retrofitted specimens failed due to low cyclic fatigue failure of the longitudinal bars. The retrofitting measures improved the displacement ductility, energy dissipation, and equivalent viscous damping. In addition, increasing the amount of CFRP reinforcement improved the performance of the test specimens.




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