DEVELOPMENT, PRINCIPLES AND LONG-TERM PERFORMANCE OF STONE MASTIC ASPHALT IN GERMANY
Stone Mastic Asphalt (SMA) was invented in Germany 30 years ago mostly as a bituminous mixture which better resists the wear of studded tires. Even though studded tires have not been allowed in Germany since 1975, SMA was improved and has been in use increasingly. Since 1984, it has been standardized in the Asphalt Specifications. SMA is a bituminous mixture for surface courses of high stability to resist permanent deformation. It also has a high wear resistance and good durability to cracking and fretting. High quality and quantity of bitumen and of maximum size aggregates are essentials for a long service life of SMA. However, quality has its price and SMA is about 20% more expensive than asphaltic concrete. The state-of-the-art of SMA is outlined, specifications explained, experiences described and case studies presented. Recommendations for mix design, manufacturing and paving are given. Also some information is provided on the contractual system and the cooperation between the client and the contractor which stimulated and fostered the development of SMA.
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- Papers in this series are published as received from the author(s) after presentation at meetings organized by the Society of Chemical Industry (SCI). This paper was presented at the SCI and IAT Joint Seminar, London, June 19, 1997.
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- Bellin, P
- Publication Date: 1997
- Features: Figures; Photos; References; Tables;
- Pagination: 33 p.
- SCI Lecture Papers
- Publisher: SCI Journals
- ISSN: 1353-114X
- TRT Terms: Case studies; Durability; History; Manufacturing; Mix design; Paving; Prices; Service life; Specifications; State of the art; Stone matrix asphalt; Wear
- Geographic Terms: Germany
- Subject Areas: Design; Highways; History; Materials;
- Accession Number: 00793179
- Record Type: Publication
- Report/Paper Numbers: Paper No. 0087
- Files: TRIS
- Created Date: May 11 2000 12:00AM