past, present and future - université laval...3‐pavement damage in cold regions phase 1 phase 2...
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The i3C research chairPast, Present and FutureGuy DoréJean-Pascal Bilodeau
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The NSERC i3C industrial research chair Phase 1 - 2008-2013 Phase 2 - 2015-2020
Research activities started in 2008Context- Paramount importance of transportation infrastructures in Canada- Rapid evolution of design methods and technologies- Climate changes- Degrading overall condition of road networks and infrastructure
renewal deficitThe first industrial chair specialized in pavement engineering
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i3C research Chair in numbers
Phase 1 Phase 2Partners 17 14Funding 2.5 M 1.6 MIn‐kind 110 K 132 KProjects 15 10Publications 115 (26 journal papers, 22 peer‐reviewed
conferences)Students 88 (6 PhD, 21 MSc)Research team 4 researchers, 3 technicians
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Research Program and Themes
1‐ Pavement design and performance
2‐ Analysis of heavyloads on pavement
3‐ Pavement damage incold regions
Phase 1
Phase 2
1- Soils and pavement materials
2- Pavement design and performance
3- Surface characteristics and effectiveness of
transportation industry
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Products1. Improvement of knowledge and development of practical
engineering tools2. Training of highly qualified engineers3. Research expertise4. Scientific publications5. Database6. National and international cooperations
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Example of products – Low‐Volume roads
o Unpaved road design tool
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Example of products – Low‐Volume roads
o Effect of surface treatment for low‐volume roads
0%
5%
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15%
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50%
0% 5% 10% 15% 20% 25% 30% 35% 40%
Relativ
e life increa
se(%
)
% of truck
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Example of products – Heavy loadso Pavement strengtening in winter
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Example of products ‐ Climateo Roughness damage function that considers frost heave and soil variability
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Example of products ‐ Materials
o Design charts for permanent deformation mitigation
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Example of products ‐ Materials
o New model forconsidering bondingbetween AC layersand its effect onpavement response
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Example of products – Truck model
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Software i3C‐me: T2 platform
Trial structure
Mechanistic analysis Performance
Frost heave analysis Performance
Final design
i3C-me : Mechanistic-empirical flexiblepavement design softwareFreeware (https://i3c.gci.ulaval.ca/i3c‐me/)
Objectives met ?
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i3C‐meo It is a ME flexible pavement
design software (structural and frost protection)
o Fully editable databases(materials, vehicles, climate, …)
o Includes research from UL and MTQ (and others …)
o Seasonal damage analysiso « Hybrid » software between
Chaussée2 (MTQ) and MnPaveo Detailed user’s manual
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Questions / Contact / Comments / [email protected]
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Trial structureMaterialsClimate
Mechanical analysis Performance
Frost heave analysis Performance
Final design
Integration of research results in i3C‐meEstimation MR
Estimation MR and SP (Soils)
Recycled materials
Drainage
Tires
Permanent deformation
Roughness
Dynamic loads
Transportation efficiency
Climate changes
Soils viscoelasticity
Frost heave and variability
Low volume roads design
Surface treatment
Damage laws(fatigue/rutting)
Damage laws IRI
Superheavy loads
Thermal cracking
Winter premiums
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Some topics studied in phase II• Theme 1 ‐ Analysis of profile data (diagnostic/decision tool) (completed)• Theme 1 ‐ ME low‐volume roads design (completed)• Theme 1 – Damage functions for fatigue cracking and structural rutting (ongoing)• Theme 1 – Surface treatment and low‐volume roads performance (ongoing)• Theme 1 ‐ Interpretation of the LWD data (ongoing)• Theme 1 ‐ Improvement of FDR (materials and construction quality) (ongoing)• Theme 2 ‐ Pavement strenghtening in winter (completed)• Theme 2 – Superheavy loads transportation (ongoing)• Theme 3 ‐ Thermal cracking: Mechanisms and solutions (ongoing)• Theme 3 – Effect of frost heave on pavement service life (completed)
Each topic should find its way in i3C‐me !
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Program relies on a unique research facility and equipment‐ Existing equipment
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Increased research capacity with full scale heavy vehicle simulator and indoor test pit‐ $18M grant from CFI
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Recent examples of R&D success
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Recent examples of R&D successA State‐of‐the‐art pavement instrumentation developed with OpSens is now part of their product catalog (with continuously increasing demand !)
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Examples of spin‐offs resulting from i3C Chair activitieso Development of a methodology to test granular materials for
permanent deformation behaviour (MTQ)o Effect of climate change on pavements (Ouranos)o Pavement response during thawing (MTQ)o Pavement response under aircraft loading (FAA)o Use of foam glass in pavement engineering (Coop R&D)o Effect of heavy vehicles loading on dam crest and core (HQ)o And many more …
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Conclusion i3C
o Positive results from first phase
o Most of the products included in a new ME flexible pavement design software (free web download)
o Phase 2 ongoing
o Training of highly qualified personnel for present and future engineering challenges
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THANK YOU TO OUR RESEARCH PARTNERS