Laboratory Investigations on SMA Mixes with Different Additives

Fibers are conventionally used as stabilizers in the construction of Stone Matrix Asphalt (SMA) pavements. These fibers are not manufactured in India and are imported from Germany. Naturally occurring jute fibers were coated with low viscosity binder and were used in the present study as an alternative to the patented fibers. Use of crumb rubber modified binder (CRMB) is also investigated as stabilizer in SMA mixes. The performance of these mix were evaluated by conducting draindown by two different methods, moisture susceptibility test, durability test, rutting test and fatigue life tests. German draindown test is not suitable for modified binder. NCAT basket test is better in evaluating mixes prepared with both stabilizers. The results of mix prepared with indigenously available fibers are comparable to the patented fibers. Mix prepared with modified binder alone provides encouraging results.


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  • Accession Number: 01049982
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 20 2007 10:41AM