Dynamic Shear Rheometer to Measure the Improvement of Asphalt Properties with the Addition of Buton Natural Asphalt-Rubber (BNA-R)

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Abstract

The characteristic of asphalt was influenced from temperature and load. Modifications of the characteristics of asphalt can improve their performance. Changes to the complex shear modulus will affect the stiffness modulus of asphalt. Indonesia has considerable deposits of natural asphalt, namely Buton natural asphalt, which has the potential to be used as an asphalt modifier. Buton natural asphalt-rubber (BNA-R) is one of the products of Buton natural asphalt mixed with rubber. This study uses a dynamic shear rheometer (DSR) to examine the effects of BNA-R on the rheology of virgin asphalt. Tests were carried out on samples before and after aging. The added quantity of BNA-R was varied from 2.5 % to 20 % with respect to Pen 64.2 virgin asphalt. The addition of BNA-R increased the hardness and improved the rheological properties of asphalt by increasing its performance grade (PG) and complex shear modulus (G*). The black diagram and master curve analysis show that the phase angle value (δ) decreases with the addition of BNA-R and increases the resistance to temperature.

Original languageEnglish
Pages (from-to)4156-4162
Number of pages7
JournalInternational Journal of Engineering Research and Technology
Volume13
Issue number12
Publication statusPublished - 2021

Keywords

  • Buton Asphalt Rubber
  • Complex Shear Modulus
  • Modified Asphalt
  • Stiffness Modulus
  • Temperature

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