Effect of Rosin Modification on Bitumen and Hot Mix Asphalt
Abstract
This
study investigated the effect of rosin on modification of bitumen and hot mix
asphalt performance. Generally, natural resin is obtained from the body of tree
naturally and fractionated and rosin which is distilled and volatile terpenes
have been removed from natural resin. It is light yellow and transparent
material. Bitumen is modified with rosin in 2%, 4%, 6% and 8% by weight of
bitumen in mixture. Characteristics of bitumen after modification is determined
with bitumen tests (rotational viscometer, penetration, softening point, ductility, elastic recovery, and
penetration index). In this study, bitumen was graded according to Performance
Grading (PG) system and PG 64-22 bitumen was used. Also, stiffness modulus was
calculated by empirical model. Optimum bitumen contents of modified bitumen for
all percentages were determined. After optimum bitumen percentage is determined
hot mix asphalt samples were prepared with these percentages according to
SuperpaveTM mix design. After all, tensile strength and moisture
susceptibility is determined with Indirect Tensile Strength test. The results
showed that 2% rosin modified bitumen showed good results among the other
modifications. It has highest moisture resistance. And the indirect tensile
strength results of rosin modified Hot Mix Asphalt (HMA) were higher
than the reference sample. Also, 6% rosin modified bitumen showed best
stiffness modulus and elastic modulus according to the empirical model.
Keywords
References
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Details
Primary Language
English
Subjects
Engineering
Journal Section
Research Article
Authors
Publication Date
April 1, 2019
Submission Date
January 25, 2019
Acceptance Date
April 4, 2019
Published in Issue
Year 2019 Volume: 23 Number: 1
Cited By
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