PAVING MATERIALS. MODULE 5 Pavement Design Terms and Concepts. Technically, what is a pavement?. “ Black Top ” or “ Tarvy ” ?. “to pave” means “to cover with asphalt, gravel, concrete, macadam, etc.”. A surface ?. Why build pavements?. Transportation. Originally, footpaths sufficed.
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Pavement Design Terms and Concepts
5.02 Identify the various pavement types according to the following three classification methods:
a) Surface Type
b) Load Transmission
a) Surface Type: Bound or Unbound
40 kN Load
40 kN Load
Typical deflection signatures
Stress is transmitted through bound surface layer to underlying granular layers
Bound surface (slab) distributes stress over a broader area, thus reducing the amount of stress transmitted to underlying material
5.07 Identify the use(s) of the following MTO designations: HL 1, 2, 3, 4 and 8; HL 3 Fine; HL 3, 4 and 8 Modified; Heavy Duty Binder; DFC; OFC; and Electrically Conductive Mix.
a) granular road surfaces, andb) existing surface treatments or asphaltic concrete
a)to control water infiltration, provide frictional resistance, improve ride quality & control dust and stone pick-up
b)to restore frictional resistance and reduce water infiltration
in general, on light to medium volume roads
5.11 Describe the materials/placement and primary application for: Mulch Pavements, Slurry Seals, Fog Seals, Primers, Tack Coats and Granular Seals.