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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15526
Title: Shear rate dependence on mixing and compaction temperatures
Authors: Saboo N.
Kumar P.
Gupta A.
Ranjeesh R.
Masad E.
Menapace I.
Bhasin A.
Scarpas T.
Kumar A.
Published in: Proceedings of Advances in Materials and Pavement Performance Prediction - Proceedings of the International AM3P Conference, 2018
Abstract: This study evaluates the effect of shear rate on the viscosity of asphalt binders, and uses it to propose a unique approach for assessing the mixing and compaction temperatures. Four different asphalt binders including VG 10, VG 30, PMB 1 and PMB 2 were chosen. Dynamic shear rheometer was used to conduct shear rate sweep test at temperatures ranging from 10–70°C. Viscosity master curves were plotted at seven different reference temperatures for each binder and Cross model was used to fit the master curve. The parameters of the Cross model in conjunction with the desired viscosity values for mixing and compaction were used to evaluate the appropriate processing temperatures through the proposed approach. The study concludes that shear rate has a dominant effect on the viscosity of asphalt binders. Polymer modified binders shows higher shear thinning behavior as compared to the conventional viscosity graded binders. Cross model can be successfully used to trace the viscosity shear rate relationships at different reference temperatures. The new methodology showed that at higher shear rates, which is commonly employed during construction, a lower mixing and compaction temperature can be suggested for modified binders. The new methodology gives flexibility to the designer to choose appropriate mixing/ compaction temperatures for asphalt binders based on the applied shear rate and the rheological profile of the binder. © 2018 Taylor & Francis Group, London.
Citation: Proceedings of Advances in Materials and Pavement Performance Prediction - Proceedings of the International AM3P Conference, 2018, (2018), 171- 175
URI: http://repository.iitr.ac.in/handle/123456789/15526
Issue Date: 2018
Publisher: CRC Press/Balkema
Keywords: Asphalt
Binders
Compaction
Mixing
Pavements
Shear flow
Shear thinning
Compaction temperature
Dynamic shear rheometer
Polymer-modified binders
Processing temperature
Reference temperature
Shear rate relationship
Shear-rate dependence
Shear-thinning behavior
Shear deformation
ISBN: 9781138313095
Author Scopus IDs: 56593007600
55466569500
57050762000
57205260134
Author Affiliations: Saboo, N., Indian Institute of Technology (BHU), Varanasi, India, Indian Institute of Technology, Roorkee, India
Kumar, P., Indian Institute of Technology (BHU), Varanasi, India, Indian Institute of Technology, Roorkee, India
Gupta, A., Indian Institute of Technology (BHU), Varanasi, India
Ranjeesh, R., Indian Institute of Technology (BHU), Varanasi, India
Appears in Collections:Conference Publications [CE]

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