Predicting Mixing and Compaction Temperatures of Polymer Modified Bitumen

Year 2020, Volume: 16 Issue: 3, 263 - 268, 29.09.2020

Ali Almusawı , Burak Şengöz , Derya Kaya Özdemir , Ali Topal

https://doi.org/10.18466/cbayarfbe.706537

Abstract

Despite many advantages of using polymer additives in bitumen, there are several challenges bordering on standards and specifications with regards to their utilization. One of these challenges is related with specifying the required heating or mixing and compaction temperatures of the polymer modified bitumen. The standard method (ASTM D 2493) aims to determine mixing and compaction temperatures of the base or unmodified bitumen. Nevertheless, the application of this method in the case of polymer modified bitumen led to very high temperatures which may not be appropriate for PMB. In this paper, some alternative methods named as the high shear rate and steady shear flow method suggested in the literature have been examined and tested for 50/70 and 160/220 penetration grade bitumen samples involving an elastomeric type of additive. A suggested method has also been proposed to overcome the complexities in the implementation of the alternative methods.

Keywords

Mixing, Compaction, Polymer Modified bitumen, High Shear Rate, Steady Shear Flow

Supporting Institution

Department of Scientific Research projects, Dokuz Eylul University

Project Number

2019.KB.FEN.021

Thanks

This research was sponsored by the Department of Scientific Research projects, Dokuz Eylul University under the project number 2019.KB.FEN.021 for which the authors are greatly indebted. The authors are also thankful to the Graduate School of Natural and Applied Sciences of Dokuz Eylul University for its support.

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