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Experimental Joint Sealants for Hot Mix Asphalt Pavements and Overlays

File Language:
English


Details

  • Creators:
    Winkelman, Thomas J.
  • Corporate Creators:
    Illinois. Department of Transportation. Bureau of Materials and Physical Research
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA/IL/PRR-168 [I2004-01]
  • Resource Type:
    Tech Report
  • Geographical Coverage:
  • Edition:
    Final Report: June 2001 – November 2002
  • Corporate Publisher:
    Illinois. Dept. of Transportation. Bureau of Materials and Physical Research
  • Abstract:
    Longitudinal joint deterioration of hot mix asphalt pavement is often caused by low joint density that allows the infiltration of water and air into the pavement. The problem is not confined to the joint interface. Low density is typically found several inches from the joint on both the unconfined and confined edges. Previous joint seals have been applied to the joint interface, but this does not address the low density of the joint area. This report summarizes five field trials of two products, the Emulsicoat Jband and the Quik Pave Products QuikSeam. Both products extended between 6 to 9 inches on both sides of the joint in order to address the entire low-density area. Both products are a solid prior to covering with the Hot Mix Asphalt (HMA) surface course. The heat of the HMA surface course softens the joint sealant. The pressure from compacting with a vibratory roller causes the joint sealant to migrate upward into the surface course air voids. The result is a joint area that prevents water and air infiltration into the lower pavement lifts and that significantly decreases infiltration within the HMA surface course. Effectiveness of the products was determined by using a field permeameter and visually monitoring joint sealant migration in cores. Results of these tests are included with the report. The results of the field trials show that both products significantly decreased joint permeability. Different trials were used to evaluate formulation changes to increase migration levels. The Jband and QuikSeam formulations evaluated in the fifth trial migrated respectively to within 0.5 and 0.625 inch of the top of the HMA surface course. Results and observations from the five field trials are included in this report. The report also includes a detail of the lab procedure that was used to minimize the number of field trials.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:6946c52c316df0696aa9e2e57d8ecb82309d9f1cc33a65053eeef6e51344f3f933b42da418099ef6d7b2e4664561a51bcfec3354b2c321e041b49c56877cdef2
  • Download URL:
  • File Type:
    Filetype[PDF - 696.55 KB ]
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