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Professor Janet Lees

Professor Janet Lees

Professor in Civil Engineering

Janet Lees is accepting applications for PhD students.

Cambridge University
Engineering Department
Trumpington Street
Cambridge CB2 1PZ

Office Phone: +44 1223 332678

Biography:

Dr Janet Lees is a Reader in Civil Engineering at the University of Cambridge and is a Chartered Engineer. Before embarking on a career in research, she spent three years in Industry working both for a Consultant and for a Contractor. She received her PhD in Structural Engineering from the University of Cambridge.  She is the leader of the Concrete and Composite Structures Group (CCSG) within the Civil Engineering Division.  The main research interests of her group relate to reinforced concrete and the use of advanced materials in construction.  Ongoing project areas include the strength assessment of existing reinforced concrete infrastructure, fibre reinforced polymer (FRP) strengthening systems, the time-dependent behaviour of reinforced concrete and carbon FRP prestressed concrete structures. 

She is a Fellow of St John's College and a Director of the University of Cambridge EPSRC Centre for Doctoral Training in Future Infrastructure and Built Environment.

Research Interests

The overarching aim of CCSG research is to provide more sustainable infrastructure solutions. This is achieved through an improved understanding of existing infrastructure assets, the use of new materials and the creation of advanced structural systems. We have particular interests in concrete and FRPs (Fibre Reinforced Polymers) and investigating novel ways to combine these materials for further advantage.  

Selected topic areas with links to current projects are as follows:

Prestressing tendons for concrete: The use of advanced durable materials as prestressing tendons for concrete would potentially avoid the current problems associated with the corrosion of steel reinforcement. Such materials of particular interest in offshore applications.

Strength assessment of reinforced concrete structures: Research that delivers improved analytical tools and experimental evidence for the more accurate assessment of existing structures has a direct impact on management strategies for existing reinforced concrete infrastructure. 

Strengthening and repair of existing structures: With increased traffic loading, changes in design codes and the unexpected deterioration of structures, there is a tremendous need for ways of extending the lifetime of existing structures.

Advanced analyses: Reinforced concrete structures are unusual in that they are often designed to be cracked under service loading. However, the presence of cracks introduces significant numerical challenges when modelling the behaviour of RC structures.

Time-dependent behaviour of unstrengthened and FRP strengthened structures: Reinforced concrete is a complex material where time-dependent influences such as concrete creep change the load sharing between the concrete, any internal steel and, where present, external FRP reinforcement.

Additional research areas include:

Glass fibre reinforced polymer (GFRP) pipelines: Vast sums of money have been spent trying to mitigate the exposure of steel pipelines to corrosive environments, both internal and external. Pipelines made with FRPs will have longer predicted lifetimes and lower installation and maintenance costs.

Sustainable concrete: Globally, 1.5 billion tonnes of cement are produced each year. As such, any environmental savings in terms of the energy consumption during the manufacture of concrete or the incorporation of waste materials into concrete will have a significant impact.

Key Publications

Selected Journal Publications*
* Links to papers in the DSpace@Cambridge repository are indicated

Foster, R.M., Morley, C.T. and Lees, J.M. (2015) "Modified Push-off Testing of an Inclined Shear Plane in Reinforced Concrete Strengthened with CFRP Fabric" ASCE Journal of Composites for Construction (postprint)

Desnerck, P., Lees, J.M. and Morley, C.T. (2015) "Bond Behaviour of Reinforcing Bars in Cracked Concrete" Construction and Building Materials v. 94, Sept., pp. 126-136 (open access) (doi)

Toumpanaki, E., Lees, J.M. and Terrasi, G.P. (2015) "Shear Modulus of Cylindrical CFRP Tendons Exposed to Moisture" ASCE Journal of Composites for Constructionv. 19 (3) 10.1061/(ASCE)CC.1943-5614.0000521, 04014059 (postprint) (doi)

Yapa, H.D. and Lees, J.M. (2014)"Optimisation of Shear Strengthened Reinforced Concrete Beams" Proceedings of the ICE - Engineering and Computational Mechanicsv. 167 (2) pp. 82–96 (published copy - from June 2015) (doi)

Yapa, H.D. and Lees, J.M. (2014) "Rectangular Reinforced Concrete Beams Strengthened with CFRP Straps" ASCE Journal of Composites for Construction, v. 18 (1), 04013032 (postprint)(doi)

Scott, P. and Lees, J.M. (2013) "Water, salt water and alkaline solution uptake in epoxy thin films" Journal of Applied Polymer Science v. 130 (3) pp. 1898-1908 (postprint) (doi)

Dirar, S., Lees, J.M. and Morley, C.T. (2013) "Precracked RC T-beams Repaired in Shear with Externally Bonded CFRP Straps" ACI Structural Journal v. 110 (5) pp. 855-866 (postprint) (journal)

Dirar, S., Lees, J.M. and Morley, C.T. (2012) "Phased Nonlinear Finite Element Analysis of Precracked RC T-Beams Repaired in Shear with CFRP Sheets" ASCE Journal of Composites for Construction v. 17 (4) pp. 476–487 (postprint) (doi)

Scott, P. and Lees, J.M. (2012) "Effects of solution exposure on the combined axial-shear behaviour of unidirectional CFRP rods" Composites Part A: applied science and manufacturing v. 43A (1) pp. 1599–1611 (postprint) (doi)

Dirar, S., Lees, J.M. and Morley, C.T. (2012) "Precracked RC T-beams Repaired in Shear with Externally Bonded CFRP Sheets" ACI Structural Journal v. 109 (2) pp. 215-223 March-April 2012 (postprint) (journal)

Roberts, E.E., Lees J.M. and Hoult, N.A. (2012) "Flexural Fatigue Performance of CFRP Prestressed Concrete" Advances in Structural Engineering v.15, (4) pp. 619–631 (postprint) (doi)

Hoult, N.A. and Lees, J.M. (2011) "Time-dependent Behaviour of RC beams Retrofitted with CFRP Straps" ASCE Journal of Composites for Construction v. 15 (1) pp. 75-84 Jan 2011 (postprint) (doi)

Lees, J.M. and Winistoerfer, A.U. (2011) "Non-laminated FRP Strap Elements for Reinforced Concrete, Timber and Masonry Applications"ASCE Journal of Composites for Construction v. 15 (2) pp. 146-155 Mar 2011 (postprint) (doi)

Yapa, H. D. and Lees, J.M. (2011) "Analysis of CFRP strap-strengthened reinforced concrete beams using the modified compression field theory (MCFT)" American Concrete Institute, ACI Special Publication (SP-275) pp. 541-56

Hoult, N.A. and Lees, J.M. (2009) "Modelling of an Unbonded CFRP Strap Shear Retrofitting System for RC Beams" ASCE Journal of Composites for Construction, v. 13 (4) pp. 292-301 (postprint) (doi)

Hoult, N.A. and Lees, J.M. (2009) "Efficient CFRP Strap Configurations for the Shear Strengthening of RC T-beams" ASCE Journal of Composites for Construction v. 13 (1) pp. 45-52 (postprint) (doi)

Scott, P. and Lees, J.M. (2009) "Uptake induced swelling and thermal expansion of CFRP tendons" Structures and Buildings, Proceedings of the Institution of Civil Engineers v. 162 (4) pp. 263-273 (published copy) (doi)

Yang, X.S., Lees, J.M. and Morley, C.T. (2008) "Fracture simulations of structures: which methods? " Communications in Numerical Methods in Engineering, v. 24 pp. 1373-1392 doi: 10.1002/cnm.1038 ISSN 1069-8299

Burgoyne, C.J, Lees, J.M. and Middleton, C.R., eds. (2007) Morley Symposium on Concrete Plasticity and its Application,Cambridge, UK, 23 July 2007 CUED Technical Report CUED/D-STRUCT/TR.222 . Cambridge University, Department of Engineering, Cambridge, UK. ISBN 978090342829

Kesse, G.K. and Lees, J.M. (2007) "Experimental Behaviour of Reinforced Concrete Beams Strengthened with Prestressed CFRP Shear Straps", ASCE Journal of Composites for Construction v. 11 (4) pp. 375-383 (postprint) (doi)

Kesse, G.K. and Lees, J.M. (2007) "Nonlinear FE Analysis of Cracks in Tension and Shear", Magazine of Concrete Research v. 59 (4) pp. 233-244 (published copy) (doi)

Lees, J.M. (2006) "Behaviour of GFRP Adhesive Pipe Joints Subjected to Pressure and Axial Loadings", Composites, Part A: applied science and manufacturing v.37 , pp. 1171-1179 (postprint) (doi)

Mertol, H.C., Rizkalla, S., Scott, P., Lees, J.M. and El-Hacha, R. (2006) "Durability of concrete beams prestressed with CFRP". Case Histories and Use of FRP for Prestressing Applications, ACI Special Publication SP245-1, Eds R. El-Hacha and S.H. Rizkalla,

Hoult, N.A. and Lees, J.M. (2005) "Long-term Performance of a CFRP Strap Shear Retrofitting System" Seventh International Symposium on Fiber Reinforced Polymer for Reinforced Concrete Structures (FRPRCS-7). SP-230 , Editors: C.K. Shield, J.P. Busel, S.L. Walkup and D.D. Gremel, American Concrete Institute International SP-230-40, pp.685-704.

Lees, J.M. and Makarov, G. (2004) "Mechanical/bonded Joints for Advanced Composite Structures", Structures and Buildings, Proceedings of the Institution of Civil Engineers, v.157 , SB1, pp. 91-98. ISSN 0965-0911

Terrasi, G.P. and Lees, J.M. (2003) "CFRP Prestressed Concrete Lighting Columns", Field Applications of FRP Reinforcement: Case Studies, Editors: S.H. Rizkalla and A. Nanni, American Concrete Institute International, SP-215, pp. 55-74. (postprint) (journal)

Lees, J.M., Winistoerfer, A.U. and Meier, U. (2002) "External Prestressed CFRP Straps for the Shear Enhancement of Concrete", ASCE Journal of Composites for Construction, v. 6(4) pp. 249-256. (postprint) (doi)

Lees J.M. (2001) "Fibre-reinforced Polymers in Reinforced and Prestressed Concrete Applications: Moving Forward", Progress in Structural Engineering and Materials , v. 3 (2) pp. 122-131 (postprint) (doi)

Lees, J.M. and Burgoyne C.J. (2000) "Analysis of Concrete Beams with Partially-Bonded Composite Reinforcement", ACI Structural Journal, v. 97, No. 2, March-April, pp. 252-258. ISSN 0889-3241 (postprint)(journal)

Lees, J.M. and Burgoyne C.J. (1999c) "Transfer Bond Stresses Generated between FRP Tendons and Concrete", Magazine of Concrete Research, v. 51, no. 4, Aug., pp. 229-239. ISSN 0024-9831 (published copy)(doi)

Lees, J.M. and Burgoyne C.J. (1999b). "Experimental Study of the Influence of Bond on the Flexural Behaviour of Concrete Beams Pre-tensioned with AFRPs", ACI Structural Journalv. 96, no. 3., May-June, pp. 377-385. ISSN 0889-3241(postprint)(doi)

Lees, J.M. and Burgoyne, C.J. (1999a) "Design Guidelines for Concrete Beams Prestressed with Partially-Bonded FRP Tendons", Fourth International Symposium on Fiber Reinforced Polymer for Reinforced Concrete Structures (FRPRCS-4). SP-188, Editors: C.W. Dolan, S.H. Rizkalla and A. Nanni, American Concrete Institute International, SP-188-69, pp.807-816.

Lees, J.M., Winistoerfer, A.U. and Meier, U. (1999) "Non-Laminated Pin-Loaded CFRP Straps for the Shear Enhancement of Concrete", Fourth International Symposium on Fiber Reinforced Polymer for Reinforced Concrete Structures (FRPRCS-4), SP-188, Editors: C.W. Dolan, S.H. Rizkalla and A. Nanni, American Concrete Institute International, SP-188-83, pp 985-994.

Lees, J.M. , Gruffyd-Jones, B. and Burgoyne, C.J. (1995). "Expansive Cement Couplers - A Means of Pre-tensioning Fibre-Reinforced Plastic Tendons", Construction and Building Materials, v. 9, no. 6, pp. 413-423. ISSN 0950-0618 (published copy)(doi)

Other Publications

Published Conference Papers/General Publications

Sivanendran,S., Lees, J.M. (2015) "Durability of CFRP pre-stressed concrete subjected to stress and moisture exposure" Proceedings of the 12th International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures (FRPRCS-12) & The 5th Asia-Pacific Conference on Fiber Reinforced Polymers in Structures (APFIS-2015) Joint Conference, Dec 14-16 2015. (to appear)

Fayyad, T.M. and Lees J.M. (2015) "Evaluation of a minimum flexural reinforcement ratio using fracture-based modelling" Proceedings of the IABSE2015 Conference: Providing solutions to global challenges, Geneva, Switzerland pp. 735-742

Fayyad, T.M. and Lees J.M. (2015) "Integrated fracture-based model for the analysis of cracked reinforced concrete beams" Proceedings of the Concrete2015 conference, 27th Biennial National Conference of the Concrete Institute of Australia in conjunction with the 69th RILEM Week conference, Melbourne, Australia, pp. 1233-1242

Foster, R.M., Lees J.M. and Morley, C.T. (2015) "An Experimental Investigation into the Effect of Externally Bonded CFRP Fabrics on the Shear Behaviour of Reinforced Concrete T-beams" Proceedings of the 7th Biennial Conference on Advanced Composites In Construction, Cambridge, Sept 9-11 2015. Eds J. Lees and S. Keighley

Jin, F., Lees, J.M. (2015) "Time-Dependent Load-Sharing in RC Beams Strengthened with CFRP Straps" Proceedings of the 7th Biennial Conference on Advanced Composites In Construction, Cambridge, Sept 9-11 2015. Eds J. Lees and S. Keighley

Brault, A., Hoult, N.A. & Lees, J.M. (2015)"Development of a Relationship between External Measurements and Reinforcement Stress"Proc SPIE 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015, 943519 (March 27, 2015); doi:10.1117/12.2175830 (published copy) (doi)

Sivanendran, S. & Lees, J.M. (2015) "Interaction between CFRP tendons and concrete when subjected to long-term moisture exposure" fib symposium 2015, Copenhagen

Desnerck, P., Lees, J.M. and Morley, C. (2015) "Impact of Material Deterioration on the Strength of Reinforced Concrete Half Joint Structures," Proceedings of the 2015 IABSE Workshop on Safety, Robustness and Condition Assessments of Structures, Helsinki, Finland, p. 8 (postprint)

Desnerck, P., Lees, J.M. and Morley, C.T. (2014) "Assessment of Reinforced Concrete Half-joint Structures: Dealing with Deterioration"Proceedings of the 2014 PCI Convention and National Bridge Conference, Washington DC, United States [CD-ROM]

Foster, R.M., Morley, C.T. and Lees, J.M.(2014) "Relating Shear Transfer Experiments to FRP Strengthened Beam Behaviour in Shear." 7th international Conference on Fiber Reinforced Polymer (FRP) Composites in Civil Engineering (CICE 2014).

Jin, F. and Lees, J.M.(2014) "Time - Dependent Shear Transfer in Reinforced Concrete Beams Strengthened with CFRP Straps" 7th international Conference on Fiber Reinforced Polymer (FRP) Composites in Civil Engineering (CICE 2014).

Toumpanaki, E., Lees, J.M. and Terrasi, G.P. (2014)."Measurement of the Sand Coating Layer in CFRP Tendons through Image Processing"7th international Conference on Fiber Reinforced Polymer (FRP) Composites in Civil Engineering (CICE 2014).

Fayyad, T.M. and Lees, J.M. (2014) "Application of Digital Image Correlation to Reinforced Concrete Fracture" Procedia Materials Science - 20th European Conference on Fracture, Eds Z. Zhang, B. Skallerud, C. Thaulow, E. Østby and J. He, Elsevier v. 3 , pp. 1585–1590(published copy)(doi)

Foster, R.M., Morley, C.T. and Lees, J.M. (2013) "Shear Transfer Across a Diagonal Crack in Reinforced Concrete Strengthened with Externally Bonded FRP Fabric"Advanced Composites in Construction (ACIC) 2013 Conference Proceedings, September 10-12, pp. 181-192.

Toumpanaki, E., Lees, J.M. and Terrasi, G.P. (2013) "Effect of Moisture Uptake on the Shear Stiffness of CFRP Tendons and the Role of the Manufacturing Route" FRPRCS-11 -11th International Symposium on Fibre Reinforced Polymer Reinforcement for Concrete Structures

Hoult, N. A. and Lees, J.M. (2012) "Long-Term Tests on CFRP Shear Retrofitted Beams: Ultimate Capacity" 6th International Conference on Advanced Composite Materials in Bridges and Structures (ACMBS-VI), Eds A. Fam, M. Green and G. Wight, The Canadian Society for Civil Engineering. ISBN 978-1-894662-19-2

Augusthus Nelson, L. and Lees, J.M. (2010) "Size Effects in Reinforced Concrete Beams Strengthened with CFRP Straps" CICE 2010 - The 5th International Conference on FRP Composites in Civil Engineering September 27-29, 2010 Beijing, China Editors: Ye LP, Feng P, Yue QR. Advances in FRP composites in Civil Engineering. pp. 789-793.

Yapa, H. D. and Lees, J.M. (2009) "Optimum shear strengthening of reinforced concrete beams with prestressed carbon fibre reinforced polymer (CFRP) straps" 4th International Conference on Advanced Composites in Construction (ACIC 09), Edinburgh, UK, pp. 214-226.

Lees, J.M. (2009) "Sensitivity of NSM Reinforcement Forces to Bond-Slip Effects"4th International Conference on Advanced Composites in Construction (ACIC 09), Edinburgh, UK, pp. 227-238.

Roberts, E., Hoult, N.A. and Lees, J.M. (2009) "Fatigue Performance of CFRP Prestressed Concrete Lighting Poles" FRPRCS-9 Fibre Reinforced Polymer Reinforcement for Concrete Structures, Sydney, Australia

Scott, P. and Lees, J.M. (2009) "Chemical Durability of Silicon Dioxide Coatings for FRP tendons" FRPRCS-9 Fibre Reinforced Polymer Reinforcement for Concrete Structures, Sydney, Australia

Lees, J.M. (2008) "Prestressed FRP/Concrete Systems – Local material and global system challenges" Fourth International Conference on FRP Composites in Civil Engineering (CICE2008), Zurich, Switzerland, KN3, ISBN:978-3-905594-50-8

Hoult, N.A. and Lees, J.M. (2008) "Comparison of finite element approaches for modeling unbonded FRP shear reinforcement " Advanced Composite Materials in Bridges and Structures, Winnipeg, Canada, Sept 2008Paper No. 97, ISBN: 978-0-9736430-7-7

Hassan Dirar, S. M. O., Morley, C. T., and Lees, J.M. (2007) "Effect of Effective Depth and Longitudinal Steel Ratio on the Behaviour of Precracked RC T-beams Strengthened in Shear with CFRP Fabrics" FRPRCS-8 Fibre Reinforced Polymer Reinforcement for Concrete Structures Patras, Greece, paper 5-8 ISBN 978-960-89691-0-0

Hoult, N.A. and Lees, J.M. (2007) "Approaches to Modeling an Unbonded CFRP Strap Shear Strengthening System for RC Beams" FRPRCS-8 Fibre Reinforced Polymer Reinforcement for Concrete Structures paper 5-3 ISBN 978-960-89691-0-0

Mertol, H.C., Rizkalla, S., Scott, P., Lees, J.M. and El-Hacha, R. (2007) "Durability and Fatigue Behavior of Concrete Beams Prestressed with CFRP", The 3rd International Conference on Durability & Field Applications of FRP Composites for Construction, Quebec City, Canada.

Scott, P. and Lees, J.M. and Sutcliffe, M.P.F. (2007) "Novel modelling of solution uptake in CFRP tendons" FRPRCS-8 Fibre Reinforced Polymer Reinforcement for Concrete Structures paper 5-3 ISBN 978-960-89691-0-0

Yang, X.S., Lees, J.M. and Morley, C.T. (2007) "Comparison of CFRP Strengthening Methods: Straps vs Fabrics" FRPRCS-8 Fibre Reinforced Polymer Reinforcement for Concrete Structures paper 5-4 ISBN 978-960-89691-0-0

Hassan Dirar, S. M. O., Morley, C. T., and Lees, J.M. (2007) "Effect of Load History on the Behaviour of Reinforced Concrete Beams Retrofitted in Shear with CFRP Systems", Proc. of the 3rd International Conference on Advanced Composites in Construction (ACIC 07), Bath, United Kingdom, pp 292-300. ISBN 086197 138 8

Yang, X.S., Lees, J.M. and Morley, C.T. (2007), "Nonlinear Finite Element 3-D Simulations of CFRP Shear Strengthening", Proc. of the 3rd International Conference on Advanced Composites in Construction (ACIC 07), Bath, United Kingdom, pp 205-212. ISBN 086197 138 8

Hassan Dirar, S.M.O., Hoult, N.A.,Morley, C.T. and Lees, J.M. (2006) "Shear Strengthening of Pre-cracked Reinforced Concrete Beams Using CFRP Straps", Proceedings of the 2nd fib Congress fib, Italy, 158-159, Vol. 2 (Paper 10-70 ISBM 978-88-89972-06-9 with two CDs).

Scott, P. and Lees, J.M. (2006) "CFRP Prestressing Tendons: Solution Uptake and Swelling Effects" Third International Conference on Composites in Civil Engineering (CICE2006) 13-15 December 2006, Miami, Florida. Editors, Mirmiran, A. and Nanni, A., ISBN 0615135862 pp 467-470.

Yang, X.S., Lees, J.M. and Morley, C.T. (2006) "Application of virtual ant algorithms in the optimization of CFRP shear strengthened precracked structures". In: Proceedings of the 6th International conference on computational science (ICCS 2006). Lecture Notes in Computer Science , 3991. Springer, Berlin, Germany, pp. 834-837. ISBN 3540343792

Yang, X.S., Lees, J.M. and Morley, C.T. (2006) "Optimization of CFRP strengthening of precracked structures using genetic algorithms",Computational Modelling of Concrete Structures: Proceedings of the EURO-C 2006 Eds G Mescheke, R. de Borst, H. Mang, N. Bicanic, March, Austria, Published by Taylor & Francis ISBN 0415397499 pp 915-920.

Yang, X.S., Lees, J.M. Morley, C.T. (2006) "Nonlinear analysis of the fracture of reinforced concrete beams under time-dependent loading",Proceedings of the 2nd fib Congress fib , Italy, 246-247, Vol. 1 (Paper 3-43 ISBN 978-88-89972-05-2 with two CDs).

Burgoyne, C.J., Lees, J.M., Middleton, C.R. and Morley, C.T. (2005) "Concrete materials, composites and structures". Concrete 39 (8). pp. 22-23. ISSN 0010-5317

Lees, J.M., Morley, C.T., Yang, X.S. and Hasan Dirar, S.M.O. (2005) "Fibre-reinforced polymer strengthening of pre-cracked concrete structures". Concrete39 (9). pp. 36-37. ISSN 0010-5317

Hoult, N.A. and Lees, J.M. (2004) "Shear Retrofitting of Reinforced Concrete Beams Using CFRP Straps" Advanced Composite Materials in Bridges and Structures, Calgary, Alberta, July 2004 Editors, M. El-Badry and L. Dunaszegi, The Canadian Society of Civil Engineering.ISBN 1-894662-06-7

Terrasi, G.P. and Lees, J.M. (2004) "Static and Dynamic Behaviour of CFRP Pre-stressed Concrete Lighting Columns.", Advanced Polymer Composites for Structural Applications in Construction ACIC 2004 Editors, L.C. Hollaway, M.K. Chryssanthopoulos and S.S.J. Moy, Woodhead Publishing Ltd,Cambridge,pp 420-427. ISBN 1855737361

Lees, J.M. (2004) "Combined pressure/tension behaviour of adhesive-bonded GFRP pipe joints", Advanced Polymer Composites for Structural Applications in Construction ACIC 2004 Editors, L.C. Hollaway, M.K. Chryssanthopoulos and S.S.J. Moy, Woodhead Publishing Ltd,Cambridge,pp 377-383. ISBN 1855737361

Agyei, B.B., Lees, J.M.and Terrasi, G.P. (2003) "Fatigue of High Strength Concrete Beams Pretensioned with CFRP Tendons", FRPRCS-6 Fibre Reinforced Polymer Reinforcement for Concrete Structures Editor, K.H. Tan, National University of Singapore, Volume 1, pp .935-944. ISBN 9812384014

Kesse, G.and Lees, J.M. (2003) "Shear Critical RC Beams Strengthened with CFRP Straps", FRPRCS-6 Fibre Reinforced Polymer Reinforcement for Concrete Structures Editor, K.H. Tan, National University of Singapore, Volume 1, pp .447-456. ISBN 9812384014

Lees, J.M.and Makarov, G. (2002) "GFRP Pipe Joints Reinforced Using Composite Pins";, Advanced Polymer Composites for Structural Applications in Construction Editors, R.A. Shenoi, S.S.J. Moy and L.C. Hollaway, Thomas Telford Limited, London, pp 291-299. ISBN 072773122X

Kesse, G., Chan, C. and Lees, J.M. (2001) "Non-linear Finite Element Analysis of RC Beams Prestressed with CFRP Straps", FRPRCS-5 Fibre Reinforced Plastics for Reinforced Concrete Structures Editor, C.J. Burgoyne, Thomas Telford Limited, Volume 1, pp 281-290. ISBN 0727730290

Winistoerfer, A.U., Meier, U. and Lees, J.M. (2001) "CARBOSTRAP - Advanced Composite Tendons", ACUN-3, Technology Convergence in Composites Applications Editors: S. Bandyopadhyay, N. Gowripalan and N. Drayton, pp 24-30. ISBN 0733407919

Lees, J.M., Winistoerfer, A.U. and Meier, U. (2000) "Behavior of Concrete Beams confined with Prestressed CFRP Straps", Advanced Composite Materials in Bridges and Structures (ACMBS-III) Editors: J. Humar and A.G. Razaqpur, The Canadian Society for Civil Engineering, pp 185-192. ISBN 0770904475

Lees, J.M. and Burgoyne, C.J. (1997). "Rigid Body Analysis of Concrete Beams Pre-tensioned with Partially Bonded AFRP Tendons", Procs Third International Symposium on Non-Metallic (FRP) Reinforcement for Concrete Structures, Volume 2, October 1997, pp. 759-766. ISBN 4931451004

Lees, J.M. and Burgoyne, C.J. (1996b). "The Use of Aramid Fibre Reinforced Plastics as Prestressing Tendons for Concrete", Procs FIP Symposium on Post-Tensioned Concrete Structures, London, pp. 607-614. ISBN 0946691576

Lees, J.M. and Burgoyne, C.J. (1996a). "Influence of Bond on Rotation Capacity of Concrete Pre-tensioned with AFRP", Advanced Composite Materials in Bridges and Structures (ACMBS-II), Editor: M. El-Badry, Montreal, Canada, pp. 901-908. ISBN 0921303645