• Sangeeta Kattal
• Ajay K Duggal

In order to prevent some problems associated with binder-related pavement failures, it is very important to be able to characterize performance of bituminous binder. Low temperature cracking is one of the most common distress types in asphalt concrete pavements, particularly in cold regions. Many factors influence the behavior of asphalt concrete pavements at low temperatures, such as the applied traffic load, environmental conditions and material characteristics. In this perspective now test methods and specifications have been developed to more accurately predict field behavior of all binders, regardless of how they are manufactured. Hence, in order to predict the low temperature at which the binder reaches some limiting stiffness and becomes sensitive to thermally induced cracking, the SHRP has developed the (bending beam rheometer) BBR. In this study, bending beam rheometer was used to explore low temperature properties evolution during aging for viscosity grade bitumen binders and various PMB and CRMB-55. BBR tests were performed, using the specimens at temperatures of -6°C,-12°C and -18°C.The ageing effect through BBR parameters (creep stiffness and m-value) was evaluated.

Bending Beam Rheometer, Low temperature cracking, Creep stiffness, m-value, Modified binders, CRMB-55.

"A review on low temperature stiffness of bitumen binder and its co-relation with stability", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.750-752, June-2019, Available :http://www.jetir.org/papers/JETIR1906884.pdf

"A review on low temperature stiffness of bitumen binder and its co-relation with stability", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp750-752, June-2019, Available at : http://www.jetir.org/papers/JETIR1906884.pdf