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Welcome, I'm

YI SHAO

  • I am a dedicated researcher. My research aims at improving the sustainability of civil infrastructure by promoting the circular use of structural concrete. Current projects focus on developing durable and resilient structural systems that minimize material and labor usage.  My toolbox includes high-performance materials, innovative structural systemstopology optimization, and digital construction methods

  • Our lab at McGill University is actively HIRING!  Learn more about the opportunities!

Profession & Education

Starting from 2022.08

McGill University, Assistant Professor

Our lab is HIRING! 

 

2020.09 - 2022.07 

University of California, Berkeley, Postdoctoral Scholar

2017.04 - 2020.09 

Stanford University, Ph.D. in Structural Engineering

 

2015.09 - 2017.03

Stanford University, M.S. in Structural Engineering

 

2011.09 - 2015.07

Hunan University, B.S. in Bridge Engineering 

Research Projects

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Improving the Sustainability and Ductility of Reinforced UHPC (ultra-high performance concrete) Beams

Tag: Reduce; Resilience 

Background:

  • Current UHPC materials include 2% or higher volume of steel fibers, which can contribute to over 30% and 40% of material costs and carbon emission, respectively. 

  • Current reinforced UHPC beams often fail early after crack localization and exhibit lower structural ductility than traditional reinforced concrete beams.

Goals:

  • Investigate the feasibility of lowering fiber volume in UHPC structures. 

  • Develop design methods to improve the structural ductility of reinforced UHPC beams. 

Research framework:

 

 

 

 

 

 

 

 

Featured results:

 

Compared to current practice, the new beam design can increase the strength and ductility by 44% and 114%, respectively, while reducing the initial costs and embodied carbon by 10% and 15%, respectively. 

Selected publications (shown in a recommended reading sequence):

  1. Shao, Y., Billington, S.L. (2019). Utilizing Full UHPC Compressive Strength in Steel Reinforced UHPC Beams, 2nd International Interactive Symposium on UHPC, Albany, NY. (First-Place Paper Award)

  2. Shao, Y., Billington, S.L. (2019). Predicting the Two Predominant Flexural Failure Paths of Longitudinally Reinforced High-performance Fiber-reinforced Cementitious Composite Structural Members. Engineering Structures, 199:109581.

  3. Shao, Y., Billington, S.L. (2022). Impact of UHPC Tensile Behavior on Steel Reinforced UHPC Flexural Behavior. Journal of Structural Engineering, 148(1): 04021244.

  4. Shao, Y., Billington, S.L. (2021). Impact of cyclic loading on longitudinally-reinforced UHPC flexural members with different fiber volumes and reinforcing ratios. Engineering Structures, 241:112454.

  5. Shao, Y., Hung, C-C., Billington, S.L. (2021). Gradual Crushing of Steel Reinforced HPFRCC Beams:
    Experiments and Simulations. Journal of Structural Engineering, 147(8): 04021114.

  6. Shao, Y., Tich, K. L., Boaro, S. B., Billington, S.L. (2022). Impact of Fiber Distribution and Cyclic Loading on the Bond Behavior of Steel-reinforced UHPC. Cement and Concrete Composites: 104338.(PDF)

Light-weight and High-performance Façade for Energy-Efficient Buildings 

Tag: Reduce

Background:

  • According to the International Energy Agency, air conditioning and fans account for 10% of the global electricity consumption in 2018, a number that is expected to triple by 2050. 

Goals:

  • Maximize the thermal insulation to reduce the thermal load and energy consumption within the buildings. 

  • Minimize the self-weight to reduce the energy and costs associated with the transportation and erection of the façade panels

Research framework:

 

Featured results:

Relative to two commonly-adopted façade designs (EPS sandwich façade and solid concrete façade),

the new façade design reduces the embodied carbon by over 35% while increasing the thermal resistance

by over 102%. Meanwhile, the new façade is more than 38% lighter than the other two options. 

Selected publication:

  1. Shao, Y., Parks, A., Ostertag, C.P. (Under Preparation). Light-weight and high-performance façade for energy-efficient buildings. 

More exciting projects will be announced soon!   

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Academic Activities

Journal Publications 

  1. Shao, Y., Billington, S.L. (2022). Impact of UHPC Tensile Behavior on Steel Reinforced UHPC Flexural Behavior. Journal of Structural Engineering, 148(1): 04021244.

  2. Shao, Y., Tich, K. L., Boaro, S. B., Billington, S.L. (2022). Impact of Fiber Distribution and Cyclic Loading on the Bond Behavior of Steel-reinforced UHPC. Cement and Concrete Composites104338. (PDF)

  3. Williams, I.D., Arteta, C., Shao, Y., Ostertag, C.P. (2022) Hybrid fiber reinforced concrete special shear wall boundary element in compression. Engineering Structures, 252:113726.

  4. Zhao, W, Liu, Y, Zhang, J, Shao, Y, Shu, J. (2022) Automatic pixel-level crack detection and evaluation of concrete structures using deep learning. Struct Control Health Monit. 2022;e2981.

  5. Shao, Y., Hung, C-C., Billington, S.L. (2021). Gradual Crushing of Steel Reinforced HPFRCC Beams:
    Experiments and Simulations. Journal of Structural Engineering, 147(8): 04021114.

  6. Shao, Y., Billington, S.L. (2021). Impact of cyclic loading on longitudinally-reinforced UHPC flexural members with different fiber volumes and reinforcing ratios. Engineering Structures, 241:112454.

  7. Shao, Y., Kuo, C-W., Hung, C-C. (2021). Seismic performance of full-scale UHPC-jacket-strengthened RC columns under high axial loads. Engineering Structures, 243:112657.

  8. Zhang, C., Shu, J., Shao, Y., Zhao, W. (2021). Automated generation of FE models of cracked RC beams based on 3D point clouds and 2D images. Journal of Civil Structural Health Monitoring.

  9. Hung, C-C., Kuo, C-W., Shao, Y. (2021). Cast-in-place and prefabricated UHPC jackets for retrofitting shear-deficient RC columns with different axial load levels. Journal of Building Engineering, 44:103305.

  10. Shao, Y., Billington, S.L. (2020). Flexural Performance of Steel-reinforced Engineered Cementitious Composites with Different Reinforcing Ratios and Steel Types. Construction and Building Materials, 231:117159.

  11. Shao, Y., Billington, S.L. (2019). Predicting the Two Predominant Flexural Failure Paths of Longitudinally Reinforced High-performance Fiber-reinforced Cementitious Composite Structural Members. Engineering Structures, 199:109581.

  12. Shao, Y., Shao, X., Li, L., Wu, J. (2017). Optimum Combination of Bridge and Deck Systems for Superspan      Cable-Stayed Bridges. Journal of Bridge Engineering, 23(1), 04017112.

  13. Deng, L., He, W., Shao, Y. (2015). Dynamic impact factors for shear and bending moment of simply supported  and continuous concrete girder bridges. Journal of Bridge Engineering, 20(11), 04015005. 

Conference Publications (Peer-reviewed)

  1. Shao, Y., Billington, S.L. (2021). Bond Performance of Ultra-High-Performance Concrete (UHPC) Under Flexural States, Proceedings of fib Symposium 2021, Lisbon, Portugal. (Link to PDF)

  2. Nguyen, W., Shao, Y., Billington, S.L., Bandelt, M. J., Ostertag, C. P. (2020). High-performance fiber-reinforced cementitious composites for seismic design: A review of columns, 17th World Conference on Earthquake Engineering (17WCEE), Sendai, Japan. (Link to PDF)

  3. Mandeep, P., Shao, Y., Billington, S.L., Bandelt, M. J. (2020) Effect of Fiber Content Variation in Plastic Hinge Region of Reinforced UHPC Flexural Members, RILEM-fib X International Symposium on Fibre Reinforced Concrete, Valencia, Spain. (Link to PDF)

  4. Shao, Y., Billington, S.L. (2019). Utilizing Full UHPC Compressive Strength in Steel Reinforced UHPC Beams, 2nd International Interactive Symposium on UHPC, Albany, NY (Link to PDF)

  5. Billington, S.L., Shao, Y., Frank, T. E., Bandelt, M. J., ​& Moreno, D. M. (2018). Simulation of reinforced ductile cement-based composite beams under cyclic loads, Euro-C 2018 Conference(Link to PDF)

  6. Yu, Y., Ma, Y.B., Shao, Y., & Deng, L. (2013). Study of Local Dynamic Impact Factor on Prestressed Concrete Box-girder Bridges, the 7th International Conference on Bridge Maintenance, Safety and Management, Paper ID: 0580P. (Link to PDF)

Conference Presentations

  1. Shao, Y. (2021). Design UHPC Structure with High Deformation CapacityACI Fall Convention, Atlanta, GA.

  2. Shao, Y., Billington, S. L. (2021). Bond Performance of Ultra-High-Performance Concrete (UHPC) Under Flexural States, fib Symposium 2021, Lisbon, Portugal.

  3. Shao, Y., Billington, S. L. (2019). Utilizing Full UHPC Compressive Strength in Steel Reinforced UHPC Beams, 2nd International Interactive Symposium on UHPC, Albany, NY.

  4. Shao, Y., Billington, S. L. (2018). Impact of Composite Tensile Behavior and Reinforcement Ratio on the Failure Mechanisms of Steel-Reinforced HPFRC Flexural Members, ACI Fall Convention, Las Vegas, NV.

Journal Reviewer Service

  • ASCE: Journal of Structural Engineering; Journal of Bridge Engineering

  • Elsevier: Engineering Structures; Journal of Building Engineering; Composites Part B: Engineering;            Construction and Building Materials.

  • Wiley: Structural Concrete. 

Research Collaborators

  • Prof. Sarah L. Billington (Stanford University)

  • Prof. Claudia P. Ostertag (University of California, Berkeley)

  • Prof. Glaucio H. Paulino (Princeton University)

  • Prof. Chung-Chan Hung (National Cheng Kung University)

  • Prof. Matthew J. Bandelt (New Jersey Institute of Technology)

Grants & Awards

2022.04 ACI Foundation Grant ($50,000)

(Support full-scale tests of reinforced UHPC beams to help develop ACI design codes for UHPC structure)

2019.06 First Place Paper Award at 2nd international UHPC symposium (Albany, NY)

(1st out of 112 peer-reviewed papers)

2016.04 Charles H. Leavell Graduate Student Fellowship (Stanford University)

(Merit-based) 

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Service

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2021.09-present 

Technical committee member of American Concrete Institue (ACI)

Serving as a voting member for ACI 239-0C (Structural design on UHPC) and ACI 239-0E (Educational Outreach). 

2014.09-2015.07

Chief Founder and President of Association of Bridge Engineering Alumni, Hunan University

Organized a series of academic and sports events to improve undergraduate education quality.

2013.09-2014.10

Vice-president of Student Union, College of Civil Engineering, Hunan University.

Aiming at improving the research, innovation, and entrepreneurship atmosphere.

Photography

Never Leave!

(current project)

(CNN News)-Microplastics have been found in human stools for the first time, suggesting they may be widespread in our food chain.

 

Industrial products (e.g., plastics and batteries) bring huge convenience to our life.  However, have we ever seriously thought about these questions: where do they go to after they finish their service? Is the trash can the true end of their life? Do you pretend that they have left your world after throwing them away?

Actually, they never leave! They are everywhere! They threaten the wildlife and our pets who do not recognize them. They come back to us through polluted water, vegetables, and animal meat that grow on this polluted land. No matter how hard it is, they have found a way to our gut!

Every year, over 300 million tons of plastics are produced and more than 50% of them are discarded. Plastics have been found in the most remote areas of the ocean, including the Arctic and Marina Trench. To save us, our next generations, and our planet, it is now the time to look seriously at them and take action!

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Contact

yishao@berkeley.edu

223 Davis Hall

Berkeley CA 94720