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Komsun SiripunDepartment of Civil Engineering
Sustainable Use of Crushed Concrete Waste as A Road Base Material
Aims
2.Why?
1.What?
3.How?
Questions Solutions1 2 3
1.What happens?
2.Why it happens?
3.How to solve?
Sustainable Use of Crushed Concrete Waste as A Road Base Material
What happens?
Construction and Demolition Materials
Questions Solutions1 2 3
Why it happens?
Construction and Demolition Materials
Questions Solutions1 2 3
-Structure Concrete
-Other Concrete and pavers
-Timber
-Brick and Tile
-Reinforced Steel
-Plastic
How to solve?
Construction and Demolition Materials
Questions Solutions1 2 3
How to solve?
Pavement structure behaviour
How to solve?
The C & D Recycling compaction curve
Questions Solutions1 2 3
How to solve?
Particle size distributions for recycled materials
Questions Solutions1 2 3
Cyclic/static Load
How to solve?
Repeated load triaxial
(RLT)
Static Load
How to solve?
RLT finite element analysis
How to solve?
Modulus vs. quarried roadbase
materials
Questions Solutions1 2 3
How to solve?
Questions Solutions1 2 3
Modulus vs. quarried roadbase
materials
How to solve?
Questions Solutions1 2 3
Curing effect of C&D material
How to solve?
Pavement structure modelling
Asphalt
Base
Subbase
Design load
Certain depth
Subgrade
allowance
2
1
Material properties+
40 mm AsphaltE=3000 MPa,μ=0.4
150 mm Base courseCRB, E=750MPa, μ=0.35
200 mm Subbase courseCrushed lime stoneE=350 MPa, μ=0.35
SubgradeE=150MPa, μ=0.35
Pavement Cross-section
Layer No. Material ID Modulus(MPa)
Layer thickness(mm)
1 Asphalt 3000 40
2 C&D material 750-1000 150-350
3 Crushed limestone 350 200
4 Subgrade CBR 15 150 Vary
How to solve?
Material parameter input
How to solve?
Multi-layer Finite element analysisApplied load of 75 kPa
Applied load of 750 kPa
Asphalt
Base
Subbase
Design load
Subgrade
allowance
Thank you
Thank you for your attention!
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