TY  - JOUR
T1  - COMPARISON BETWEEN ZERO SHEAR VISCOSITY AND STEADY SHEAR FLOW METHODS TO DETERMINE MIXING AND COMPACTION TEMPERATURES OF PMB
AU  - Almusawı, Ali
PY  - 2019
DA  - December
JF  - Eurasian Journal of Civil Engineering and Architecture
JO  - EJCAR
PB  - Serkan ŞAHİNKAYA
WT  - DergiPark
SN  - 2602-3865
SP  - 1
EP  - 8
VL  - 3
IS  - 2
LA  - en
AB  - In order toobtain a better performance, different modifiers types have been adopted tocomplement the rheological characteristics of the bitumen used in the asphaltroad construction. To bring the asphalt mixture to the desired workability,bitumen and aggregate must be heated at an elevated temperature before mixing.Thus, estimating mixing and compaction temperatures is necessary to achieve therequired performance. The equiviscous method (ASTM D 2493) has been developedthrough the bitumen viscosity measurement to calculate the required mixing andcompaction temperatures. But a problem with excessive temperatures resultedthrough the implementation of this method when it is applied for the modifiedbitumen. Insufficiency of the equiviscous method led to a necessary need toinvestigate for an alternative method which should be more applicable for themodified bitumen. In this study, two methods named Zero Shear Viscosity (ZSV)and Steady Shear Flow (SSF) have been examined to measure the applicability forthe modified bitumen. For this purpose, 50/70 bitumen grade was modified with5% elastomeric type – Styrene Butadiene Styrene (SBS), and 1.5 % ReactiveElastomeric Terpolymer type – Elvaloy (RET). The results have shown that theapplication of the new alternative methods resulted in lower mixing andcompaction temperatures for the modified bitumen.
KW  - Compaction
KW  - Mixing
KW  - Modified bitumen
KW  - Steady Shear Flow
KW  - Zero Shear Viscosity
CR  - Hunter RN, Self A, Read J, Hobson E. (2015). The shell bitumen handbook, ICE Publishing, London, UK.
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UR  - https://dergipark.org.tr/tr/pub/ejcar/issue//602933
L1  - https://dergipark.org.tr/tr/download/article-file/835407
ER  -