High Performance Hybrid Structure (SHHP)

ISSUE ADDRESSED
The thermal fluctuations of our unique climate cause many inconveniences in the infrastructure sector. For example, the pillars of bridges, the beams of multi-storey parking lots and marine structures in reinforced concrete are greatly deteriorated due to humidity and de-icing salts. The demand for more durable and structurally efficient structures continues to grow and there is an urgent need to find sustainable alternatives to extend the useful life of reinforced concrete structures. This is why Prof. Masmoudi and his team from the University of Sherbrooke looked into this problem. They therefore developed a new concept of a high-performance hybrid beam/column that surpasses the performance of conventional beams. It is also a new type of structure, making it possible to compete with the markets for steel, aluminum, conventional reinforced concrete and wood structures.

TECHNOLOGY
The principle of these hybrid beams/columns is based on the use of fiber reinforced polymers (FRP) as permanent formwork. The reinforced concrete is confined using tubes made of composite materials, both outside and inside. The inner tube makes it possible to create the vacuum and thus to lighten the weight of the structural element.

ADVANTAGES
Cost reduction :
• Elimination of formwork/stripping operations
• Elimination of transverse reinforcement
• Increased useful life
• Weight reduction of up to 30% less concrete
Architectural appearance: Choice of color and texture.
Less impact on the environment: less concrete, possibility of dismantling structures and reusing prefabricated beams/columns.
Superior properties:
• Increased durability in aggressive environments (de-icing salt, humidity, etc.)
• Increased bearing capacity: 300 to 400% higher
• Prefabricated beams and columns
• Ease of assembly/disassembly: by screwed fixings
Unparalleled performance in the face of extreme loads: earthquakes, winds, explosive loads, tornadoes, impacts etc.
 
APPLICATIONS
• Bridges and infrastructure.
• Residential, industrial and institutional constructions.
• Multilevel parking lots.
• Coastal structures where durability and longer life are required.
 
INTELLECTUAL PROPERTY STATUS
U.S. Patent Issued: 9,637,923 (May 2, 2017)
CAN patent application (CA 9,928, 252)
Commercial license available or spin-off company

Project Director: Josianne Vigneault