Paving mixtures, sulfur/asphalt

Figure 6. Heated dump body truck developed by Shell Canada, Ltd. used for hauling sand-asphalt-sulfur paving mixtures. [Photographed at the Kenedy County Texas field trials in 1977 (28)].

Both cellulosic wastes and lignins were found to have only limited applicability to the problem at hand. Sulfur, however, has been shown to be a very useful material for this purpose. Elemental sulfur may be used to extend asphalt, as in sulfur extended asphalt (SEA) binders, or chemically modified sulfurs may completely replace asphalt in paving mixtures. 

Test Strips. Larger batches of direct-substituted sulfur-asphalt paving mixtures were prepared with type IVb aggregate materials. Mixtures containing 0-, 15-, 25-, and 35-vol % sulfur in the asphalt binder were... 

Lee, D. Y., Modification of Asphalt and Asphalt Paving Mixtures by Sulfur... 

The process developed by SNPA involves a dispersion of sulfur in asphalt to form a sulfur/asphalt (S/A) binder. This S/A binder is then used to produce hot-mix paving mixtures with conventional mix-plant and paving equipment. 

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