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AAPA National Model Specifications
EME2 model specification
High modulus asphalt (EME2) was recently introduced to Australia. The high stiffness of the material combined with good rut resistance and fatigue performance allows for significant reductions in pavement thickness. This national model specification is intended as a guide for asset owners in the creation of technical specifications for the supply of EME2 asphalt mixes.
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This AAPA national model specification is intended as a guide for asset owners in the creation of technical specifications for the supply of stone mastic asphalt mixes with a nominal maximum aggregate size of 7 mm (SMA7). SMA7 materials are typically used as a thin surfacing layer (25 mm – 35 mm). SMA7 will typically contain a polymer modified binder, except under light traffic conditions (defined in this specification), where an unmodified bitumen may be appropriate. The design criteria in this model specification are based on well-established practice. The document brings together years of experience with the supply of SMA7 by industry.