Repeatability and Reproducibility of the Newly Developed Hot-Poured Bituminous Sealant Viscosity Test

Current standard test methods for hot-poured bituminous-based sealants are mostly empirical in nature and do not correlate well with field performance. Hence, there is a need for testing methods that are based on sealant rheological properties and can accurately predict field performance. Recent research has allowed the development of a new testing procedure to control sealant installation by measuring the viscosity under conditions similar to those encountered in the field. Viscosity of the sealant not only affects the installation process but it also plays an important role in dictating the strength of the bond to the crack. This paper aims to validate the newly developed test procedure through statistical analysis following ASTM practices C802 and C670. A round-robin test was conducted with seven laboratories, and the repeatability of the measurement was determined through statistical analysis. Average coefficient of variation within and between laboratories was found to be 1.6% and 6%, respectively. Using the data from the round robin testing, and based on ASTM precision and bias standards, maximum permissible differences within a laboratory and between laboratories were defined at 4.6% and 16.9%, respectively. Considering the presence of a high percentage of polymer and crumb rubber in sealants, temperature sensitivity of the sealant, and chances for segregation, the repeatability and reproducibility of the developed test is within an acceptable range. These values are comparable with those of asphalt binder: 3.5% and 14.5% based on ASTM D4402-02 and 3.5% and 12.1% based on AASHTO 2006 T316.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Al-Qadi, Imad L
  • Fini, Eli H
  • Elseifi, Mostafa A
  • Figueroa, Hector
  • Masson, Jean-Francois
  • McGhee, Kevin Kenneth
• Conference:
  • Transportation Research Board 86th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2007-1-21 to 2007-1-25
• Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 17p
• Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Binder content; Binders; Bituminous mixtures; Crumb rubber; Sealing compounds; Shear reinforcement; Shear strength; Viscosity
• Uncontrolled Terms: Crack sealants; Crack sealing; Hot-pour sealants; Repeatability; Round robin testing
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01046275
• Record Type: Publication
• Report/Paper Numbers: 07-2789
• Files: TRIS, TRB
• Created Date: Apr 23 2007 7:50AM