Development of apparent viscosity test for hot-poured crack sealants.

Details

• Creators:
  Al-Qadi, Imad L. ; Fini, Eli H. ; Masson, Jean-Francois ; Loulizi, Amara ; McGhee, Kevin K. ; Elseifi, Mostafa A.
• Corporate Creators:
  University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering
• Corporate Contributors:
  National Research Council Canada ; Reseau National Universitaire, Tunisia ; Virginia. Dept. of Transportation ; Louisiana State University (Baton Rouge, La.) ; Illinois Center for Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Pavement design
  • Pavement components
  • Pavement cracking
  • Pavement layers Pavements
• Publication/ Report Number:
  ICT-08-027;ICT-08-027, UILU-ENG-2008-2015
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  Current crack sealant specifications focuses on utilizing simple empirical tests such as penetration, ; resilience, flow, and bonding to cement concrete briquettes (ASTM D3405) to measure the ability of the material ; to resist cohesive and adhesion failures. There is, however, no indication of the pertinence of these standard ; tests to predict the success of field installation and sealant performance. In an effort to bridge the gap between ; sealant fundamental properties and field performance, performance-based guidelines for selection of hot-poured ; crack sealants are currently being developed. This report focuses on the development of the apparent viscosity ; test method. This test uses a modified version of the Brookfield rotational viscometer. Based on the results of ; this study, the measured apparent viscosity of hot-poured crack sealant using SC4-27 spindle at 60rpm (20.4s-1) ; at the recommended installation temperature was determined to be reasonably representative of sealant ; viscosity at shear rates resembling field application. To ensure measurement consistency and stability, a 20min ; melting time and a 30-s waiting time prior to data collection are recommended. To establish precision and bias ; for the test, a round robin testing was conducted among seven laboratories. Average coefficient of variation ; within and between laboratories was found to be 2% and 6%, respectively. Using the data from the round robin ; testing, and based on ASTM precision and bias standard (ASTM practices C802 and C670), maximum ; permissible differences within a laboratory and between laboratories were found to be 4.6% and 16.9%. ; Considering the high polymer or crumb rubber content in crack sealants and sealant temperature sensitivity, the ; repeatability and reproducibility of the developed test is within an acceptable range. These values are ; comparable to 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.
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• Format:
  PDF
• Funding:
  VTRC Project # 67775, TPF-5(045)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16704/dot_16704_DS1.pdf
• File Type:
  [PDF - 373.95 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b3d4e04808de0ed0136f16d4f2927dc0194c058cc7ee47de87809c3798f89f8218e3a26df74e11145f9d96364f95a5b7a982e71c03645c9cf7bf2ca51b47736b