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Presented by: Imants Deme Shell Sulphur Solutions Shell Canada Energy Reducing the size of the asphalt ecological footprint with SEAM (Sulphur Extended Asphalt Modifier) Canadian User-Producer Group for Asphalt CUPGA 2007, Sustainability Symposium November 18, 2007

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2 Contents Sulphur-Extended Asphalt history SEAM properties and use Health, safety and environment SEAM technology (40/60 SEAM/bitumen semi-rigid pavements) - Bitumen reduction - Road performance properties - Road design The green page Examples of applications

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3 SEAM history

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4 Historical perspective 1970s & 80s NOW Liquid sulphur + High shear mixer No H 2 S scavenger & no plasticizer Pelletized sulphur with dispersing agent, H 2 S scavenger & plasticizer: Sulphur- Extended Asphalt Modifier = SEAM

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5 SEAM properties and use

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6 SEAM Properties Solid pellet at ambient temperatures (