|Author||Search for: Al-Qadi, I. L.; Search for: Yang, S.-H.; Search for: Elsefi, M. A.; Search for: Dessouky, S.; Search for: Loulizi, A.; Search for: Masson, J.-F.1; Search for: McGhee, K. K.|
- National Research Council of Canada. NRC Institute for Research in Construction
|Format||Text, Technical Report|
|Physical description||52 p.|
The purpose of this research was to develop performance guidelines for the selection of hot-poured bituminous crack sealants at low temperature. In this part of the research, the creep behavior of crack sealant at low temperature is measured and performance criteria for material selection were developed. Because various pavement and State agencies are well acquainted with and own the Bending BeamRheometer (BBR), which was developed during the Strategic Highway Research Program (SHRP), an attempt was made to utilize the same setup to test hot-poured bituminous-based crack sealants. Testing conducted in this research project indicated that the standard BBR was inappropriate for testing soft bituminous-based hot-poured crack sealant, even at -40°C. The measured deflection exceeded the BBR limit, for some sealants, after only a few seconds of loading. To address this issue, the moment of inertia of the tested beam was increased by doubling its thickness (from 6.35mm to 12.7mm). For the new beam dimensions, it was found that only 4% of the beam center deflection is due to shear, a value deemed acceptable for sealant evaluation and comparison.
|Publisher||University of Illinois at Urbana-Champaign. Illinois Center for Transportation|
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