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SMA (Stone Mastic Asphalt)
Products / Concrete Products & Aggregates / Asphalt Products / SMA (Stone Mastic Asphalt)
Stone Mastic Asphalt (SMA) is a dense wearing course material which was developed on the continent to overcome the issue of rutting due to the action of studded tyres on road surfaces. The mineral aggregate skeleton of SMA is gap-graded and the voids are filled with a mastic of fine aggregate, filler and binder that complies with EN 13108. Due to the high stone content and open nature of the aggregate matrix, traffic loads are transmitted through the interlocking stone skeleton rather than through the mortar.
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