Civil
Engineering

Dr. Wael W. El-Dakhakhni
B.Sc. (Ain-Shams, Egypt),
M.Sc., Ph.D. (Drexel, USA),
P.E., P.Eng.

Office JHE 338
Extension 26109
Email address eldak@mcmaster.ca

Associate Professor, Civil Engineering
Martini, Mascarin and George Chair in Masonry Design
Co- Director, Center for Effective Design of Structures
Member, School of Biomedical Engineering

Structures and Earthquake Engineering

Research Interests

Testing and Modeling of Masonry Structures under Seismic Loading
Performance of Structures under Blast Loading
Composite Materials and Strutures Applications in Infrastructure

Specific Research Interests and Activities

Dr. El-Dakahkhni's expertise is in the area of structural response to extreme dynamic loading including earthquake, impact and blast events. He serves as a voting member in several national and international standards and professional organization committees. He has two main research groups: the first is focused on the seismic response of reinforced masonry, concrete and composite systems` while the second is focused on masonry, concrete and steel component performances and human injury thresholds under blast loading. His research interests also extend to the development of low-cost seismic-safe housing utilizing innovative composite systems and the general area of structural retrofit/strengthening against extreme earthquakes and explosions using composite material and systems.

Publications

Karimi, K., Tait, M. J. and El-Dakhakhni, W. W. (2013) Analytical Modeling and Design of a Novel FRP-encased Steel-Concrete Composite Column with Various Slenderness Ratios, Engineering Structures, Vol. 46, No. 1, pp 526–534.
Karimi, K., El-Dakhakhni, W. W. and Tait, M. J. (2012) Behavior of Slender Steel‐Concrete Composite Columns Wrapped with FRP Jackets, ASCE Journal of Performance of Constructed Facilities. Vol. 26, No. 5, pp. 590–599.
Banting, B., and El-Dakhakhni, W. W. (2012) Force- and Displacement-Based Seismic Performance Parameters for Reinforced Masonry Structural Walls with Boundary Elements, ASCE Journal of Structural Engineering. Vol. 138, No. 12, pp. 1477-1491.
Karimi, K., Tait, M. J. and El-Dakhakhni, W. W. (2012) Influence of Slenderness on the Behavior of FRP-encased Steel-concrete Composite Columns, ASCE Journal of Composite for Construction, Vol. 16, No. 1, pp. 100-109.
Abou-Zeid, B.M., El-Dakhakhni, W.W., Razaqpur, A.G. and Foo. S. (2011) Modeling the Nonlinear Behavior of Concrete Masonry Walls Retrofitted with Steel Studs under Blast Loading, ASCE Journal of Performance of Constructed Facilities, 25, Special Issue: Protection of Structures Against Blast Loading, 411–421.
Karimi, K., Tait, M. J. and El-Dakhakhni, W. W. (2011) Testing and Modeling of a Novel FRP-encased Steel-Concrete Composite Column, Composite Structures, Volume 93, Issue 5, Pages 1463-1473
Nassr, A.A. and El-Dakhakhni, W.W. (2011) Improved Interdigital Sensors for Structural Health Monitoring of Composite Retrofit Systems, Journal of Reinforced Plastics and Composites. Vol. 30, No. 7, pp. 621-629.
Abou-Zeid, B.M., El-Dakhakhni, W.W., and Razaqpur, A.G. Foo. S. (2011) Performance of Unreinforced Masonry Walls Retrofitted with Externally-anchored Steel Studs under Blast Loading, ASCE Journal of Performance of Constructed Facilities. Vol. 25, No. 5, pp. 441-453.
Abou-Zeid, B.M., El-Dakhakhni, W.W., Razaqpur, A.G. and Foo. S. (2011) Response of Arching Unreinforced Concrete Masonry Walls to Blast Loading, ASCE Journal of Structural Engineering. Vol. 137, No. 10, pp. 1205-1214.
Karimi, K., El-Dakhakhni, W. W. and Tait, M. J. (2011) Performance Enhancement of Steel Columns using Concrete-filled Composite Jacket, ASCE Journal of Performance of Constructed Facilities. Vol. 25, No. 3, pp. 189-201.
Shedid, M.T., El-Dakhakhni, W. W. and R.G. Drysdale (2011) Seismic Response Modification Factors for Reinforced Masonry Structural Walls, ASCE Journal of Performance of Constructed Facilities. Vol. 25, No. 2, pp.74–86.
Shedid, M.T., El-Dakhakhni, W. W. and R.G. Drysdale (2010) Characteristic of Confined and Unconfined Masonry Prisms for Seismic Performance Enhancement of Structural Walls, Masonry International Vol. 23, No.2, pp. 69-78.
Shedid, M.T., El-Dakhakhni, W. W. and R.G. Drysdale (2010) Characteristics of Rectangular, Flanged, and End-confined Reinforced Concrete Masonry Shear Walls for Seismic Design, ASCE Journal of Structural Engineering. Vol. 136, No. 12, pp. 1471-1482.
El-Dakhakhni, W.W.,Nassr, A.A., and Shedid, M.T. (2010) Detection of Ungrouted Cells in Concrete Masonry Wall Construction using a Dielectric Variation Approach, ASCE Journal of Engineering Mechanics Vol. 136, No. 4, pp. 438-447
Shedid, M.T., El-Dakhakhni, W. W. and R.G. Drysdale (2010) Seismic Performance Parameters of Reinforced Concrete-Block Shear Wall Construction, ASCE Journal of Performance of Constructed Facilities Vol. 24, No. 1, pp. 4-18.
Mostafa, H.E., Mekky, W.F., and El-Dakhakhni, W. W. (2010) Use of Reinforced Rigid Polyurethane Foam for Blast Hazard Mitigation, Journal of Reinforced Plastics and Composites, Vol. 29, 20: pp. 3048-3057.
El-Dakhakhni, W. W., George, S. and Shedid, M.T. (2010) Seismic Retrofit of Concrete Block Wall Intersections Using Composite Laminates, Journal of Reinforced Plastics and Composites. Vol. 29, 11: pp. 1609-1625.
Nassr, A.A., El-Dakhakhni, W.W. and Ahmed, W.H., (2010) Biodegradation and Debonding Detection of Composite-Wrapped Wood Structures, Journal of Reinforced Plastics and Composites, Vol. 29, 15: pp. 2296-2305
El-Dakhakhni, W. W., Mekky, W. F., and Changiz-Rezaei, S.H. (2010) Validity of SDOF Models for Analyzing Two-Way Reinforced Concrete Panels under Blast Loading, ASCE Journal of Performance of Constructed Facilities, Vol. 24, No. 4, pp. 311-325
Shedid, M.T., El-Dakhakhni, W. W. and R.G. Drysdale (2010) Alternative Strategies to Enhance the Seismic Performance of Reinforced Concrete-Block Shear Wall Systems, ASCE Journal of Structural Engineering, Vol. 136, No. 6, pp. 676-689.
Shedid, M.T., El-Dakhakhni, W. W. and R.G. Drysdale (2009) Behavior of Fully Grouted Concrete Masonry Shear Walls Failing in Flexure: Analysis, Engineering Structures, Vol. 31, Issue 9, pp. 2032-2044.
Nassr, A.A., and El-Dakhakhni, W.W. (2009) Non-Destructive Evaluation of Laminated Composite Plates Using Dielectrometry Sensors, Smart Materials and Structures Vol. 18, No. 5, pp. 1-8.
Nassr, A.A., and El-Dakhakhni, W.W. (2009) Damage Detection in FRP-Strengthened Concrete Structures using Capacitance Measurements, ASCE Journal of Composites for Construction, Vol. 13, No. 6, pp. 486-497.
El-Dakhakhni, W. W., Changiz-Rezaei, S.H.,Mekky, W. F., and Razaqpur, A. G. (2009) Response Sensitivity of Blast-Loaded RC Structures to the Number of Degrees of Freedom, CJCE special issue on Blast Engineering, Vol. 36, pp. 1305-1320.
El-Dakhakhni, W. W., and Mekky, W. F., Changiz-Rezaei, S.H. (2009) Vulnerability Screening and Capacity Assessment of Reinforced Concrete Columns Subjected to Blast, ASCE Journal of Performance of Constructed Facilities Vol.23, No. 5, pp. 353-365.
Nassr, A.A., Ahmed, W.H., and El-Dakhakhni, W.W. (2008) Coplanar-capacitance Sensors for Detecting Water Intrusion in Composite Structures, Measurement Science and Technology Vol. 19, No. 7, pp. 1-7.
Shedid, M.T.,Drysdale, R.G. and El-Dakhakhni, W. W. (2008) Behavior of Fully Grouted Concrete Masonry Shear Walls Failing in Flexure: Experimental Results, ASCE Journal of Structural Engineering Vol. 134, No. 11, pp. 1754-1767.
Drysdale, R.G., El-Dakhakhni, W. W., and Kolodziejski E.A. (2008) Evaluation of Flange-Web Intersection Shear Capacity for Concrete Masonry Shear Walls, ASCE Journal of Structural Engineering Vol. 134, No. 6, pp. 947-960.
El-Dakhakhni, W.W., Hamid, A.A., Hakam, Z. and Elgaaly, M. (2006) Hazard Mitigation and Strengthening of URM Walls using Composites, Composite Structures Vol. 73, No. 1, pp. 458-477.
Ibrahim, S.A., El-Dakhakhni, W.W., and Elgaaly, M. (2006) Fatigue of Corrugated-Web Plate Girders: Experimental Study, ASCE Journal of Structural Engineering Vol. 132, No. 9, 2006, pp. 1371-1380.
Ibrahim, S.A., El-Dakhakhni, W.W., and Elgaaly, M. (2006) Fatigue of Corrugated-Web Plate Girders: Analytical Study, ASCE Journal of Structural Engineering Vol. 132, No. 9, 2006, pp. 1381-1392.
Ibrahim, S.A., El-Dakhakhni, W.W., and Elgaaly, M. (2006) Behaviour of bridge girders with corrugated webs under monotonic and cyclic loading, Engineering Structures Volume 28, No 14, 2006, pp. 1941-1955.
El-Dakhakhni, W. W., Drysdale, R.G., and Khattab, M.M. (2006) Multilaminate Macromodel for Concrete Masonry: Formulation and Verification, ASCE Journal of Structural Engineering, Vol. 132, No. 12, 2006,pp. 1984-1996.
Hamid, A.A., El-Dakhakhni, W.W., Hakam, Z. and Elgaaly, M. (2005) Behavior of URM-FRP Assemblages under In-Plane Loading, ASCE Journal of Composites for Construction Vol. 9, No. 1, 2005, pp. 73-83.
Drysdale, R.G., El-Dakhakhni, W. W., and Khattab, M.M. (2005) In-Plane Behaviour of Grouted Concrete Masonry Assemblages, Masonry International Vol. 18, No. 1, pp. 21-38.
El-Dakhakhni, W.W., Hamid, A.A. and Elgaaly, M. (2004) In-Plane Strengthening of URM Infill Wall Assemblages Using GFRP Laminates, The Masonry Society Journal Vol. 22, No. 1, 2004, pp. 13-25.
El-Dakhakhni, W.W., Hamid, A.A. and Elgaaly, M. (2004) Seismic Retrofit of Masonry-Infilled Steel Frames using GFRP, ASCE Journal of Structural Engineering, Vol. 130, No. 9, 2004, pp. 1343-1352.
El-Dakhakhni, W.W., Elgaaly, M., and Hamid, A.A. (2003) Three Strut Model for Concrete Masonry-Infilled Steel Frames, ASCE Journal of Structural Engineering, Vol. 129, No. 2, 2003, pp.177-185.

Books

El-Dakhakhni, W.W., and Drysdale, R.G. (2009) Editors, 11th Canadian Masonry Symposium, Canada Masonry Centre, Mississauga, ON. Hard copy ISBN 978-0-9737209-1-4 and CD-ROM, ISBN 978-0-9737209-2-1.