use of sulphur in asphalt pavements
نویسندگان
چکیده
this paper is a state-of-the-art in sulphur-asphalt (sa) design technology based on a comprehensive analysis of current practice and technical literature, in order to investigate the possible use of sa pavements in iran. in this paper, the major aspects(material, technology, properties, production, placement, quality assurance, design, and field varification) of sa pavements are considered. fer those desiring.. more detailed informatin, a listing of references has been included. the use of sulphur in asphalt pavements has received considerable attention over the past decade, largely due to asphalt costs, dwindling hydrocarbon resources, and surplus sulphur accumulation from oil refineries. the sa pavements represent a viable alternative to the conventional asphalt pavements and they offer potential performance and economic advantages. extensive laboratory, field, and analytical investigation have been conducted to verify the design technology, the first field project of sa pavement was constructed in canada in 1974. since that time ,many other projects have been constructed in canada, the united states of america, europe and mid east. sulphur-asphalt mixes have been found to have lower temperature suseptibility, increased marshall stability, and increased resilient modulus of elasticity than conventional asphalt pavements. production, transport, placement, and compaction of sa mixes is done with conventional methods and equipment. due to the potential advantages of sa pavements, and due to the availability of sulphur and asphalt in iran ,its use is highly recommended especially in arid areas and where good quality aggregates are not readily available but sands are available.
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عنوان ژورنال:
نشریه دانشکده فنیجلد ۴۶، شماره ۰۴، صفحات ۰-۰
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