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- Stone_mastic_asphalt abstract "Stone mastic asphalt (SMA), also called stone-matrix asphalt, was developed in Germany in the 1960s. It provides a deformation resistant, durable surfacing material, suitable for heavily trafficked roads. SMA has found use in Europe, Australia, the United States, and Canada as a durable asphalt surfacing option for residential streets and highways. SMA has a high coarse aggregate content that interlocks to form a stone skeleton that resists permanent deformation. The stone skeleton is filled with a mastic of bitumen and filler to which fibres are added to provide adequate stability of bitumen and to prevent drainage of binder during transport and placement. Typical SMA composition consists of 70−80% coarse aggregate, 8−12% filler, 6.0−7.0% binder, and 0.3 per cent fibre.File:SMA and DGA.jpgThe deformation resistant capacity of SMA stems from a coarse stone skeleton providing more stone-on-stone contact than with conventional dense graded asphalt (DGA) mixes (see above picture). Improved binder durability is a result of higher bitumen content, a thicker bitumen film, and lower air voids content. This high bitumen content also improves flexibility. Addition of a small quantity of cellulose or mineral fibre prevents drainage of bitumen during transport and placement. There are no precise design guidelines for SMA mixes. The essential features, which are the coarse aggregate skeleton and mastic composition, and the consequent surface texture and mixture stability, are largely determined by the selection of aggregate grading and the type and proportion of filler and binder.".
- Stone_mastic_asphalt thumbnail SMA_and_DGA.jpg?width=300.
- Stone_mastic_asphalt wikiPageExternalLink www.arrb.com.au.
- Stone_mastic_asphalt wikiPageID "7254093".
- Stone_mastic_asphalt wikiPageRevisionID "589716768".
- Stone_mastic_asphalt hasPhotoCollection Stone_mastic_asphalt.
- Stone_mastic_asphalt subject Category:Pavements.
- Stone_mastic_asphalt subject Category:Road_construction.
- Stone_mastic_asphalt type Artifact100021939.
- Stone_mastic_asphalt type HorizontalSurface103536348.
- Stone_mastic_asphalt type Object100002684.
- Stone_mastic_asphalt type PavedSurface103900509.
- Stone_mastic_asphalt type Pavement103900750.
- Stone_mastic_asphalt type Pavements.
- Stone_mastic_asphalt type PhysicalEntity100001930.
- Stone_mastic_asphalt type Surface104362025.
- Stone_mastic_asphalt type Whole100003553.
- Stone_mastic_asphalt comment "Stone mastic asphalt (SMA), also called stone-matrix asphalt, was developed in Germany in the 1960s. It provides a deformation resistant, durable surfacing material, suitable for heavily trafficked roads. SMA has found use in Europe, Australia, the United States, and Canada as a durable asphalt surfacing option for residential streets and highways. SMA has a high coarse aggregate content that interlocks to form a stone skeleton that resists permanent deformation.".
- Stone_mastic_asphalt label "Mastyks grysowy SMA".
- Stone_mastic_asphalt label "Steenmastiekasfalt".
- Stone_mastic_asphalt label "Stone mastic asphalt".
- Stone_mastic_asphalt label "沥青玛蹄脂碎石".
- Stone_mastic_asphalt sameAs Steenmastiekasfalt.
- Stone_mastic_asphalt sameAs Mastyks_grysowy_SMA.
- Stone_mastic_asphalt sameAs m.025xcj9.
- Stone_mastic_asphalt sameAs Q3495596.
- Stone_mastic_asphalt sameAs Q3495596.
- Stone_mastic_asphalt sameAs Stone_mastic_asphalt.
- Stone_mastic_asphalt wasDerivedFrom Stone_mastic_asphalt?oldid=589716768.
- Stone_mastic_asphalt depiction SMA_and_DGA.jpg.
- Stone_mastic_asphalt isPrimaryTopicOf Stone_mastic_asphalt.