TRUCKS SEAL-COAT ROADWAY WITH ASPHALT-RUBBER

Research has shown that asphalt-rubber, when placed as a seal coat, controls reflection of fatigue cracks and is an effective alternate to a major overlay or reconstruction. When used as an interlayer, the membrane effectively controls reflection of all cracks. A seal-coat job is described in which special distributor trucks heading a paving train put down 175 tons of asphalt rubber in one day. The stress-absorbing material consisted of a No. 16 to 25-mech ground tire rubber reacted with asphalt and cut back kerosene. The asphalt rubber requires more application time than a regualr seal coat, and strict adherence to specifications is critical for successful placement. The use of this matirial represents savings in asphalt, aggregate, and energy costs. The asphalt-rubber has been used as a water-barrier on bridge decks. Other potential applications include: membrane encapsulated subgrades; control of expansive clay subgrades under existing highways; and as a thin overlay for renewing rideability and skid resistance on portland cement concrete pavement.

• Corporate Authors:

  McGraw-Hill, Incorporated

  330 West 42nd Street
  New York, NY  United States  10036
• Publication Date: 0

Media Info

• Features: Photos;
• Pagination: p. 54-55
• Serial:
  • Construction Methods and Equipment
  • Volume: 59
  • Issue Number: 1
  • Publisher: McGraw-Hill, Incorporated

Subject/Index Terms

• TRT Terms: Conservation; Energy; Expansive clays; Kerosene; Membrane encapsulated soil layers; Overlays (Pavements); Pavements; Pavers; Paving; Reflection cracking; Rubberized bitumen; Savings; Seal coating; Skid resistance; Skidding; Subgrade (Pavements); Waterproofing materials
• Subject Areas: Construction; Energy; Environment; Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00163690
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM