Storage Stability and Morphology of Latex Modified Bitumen
Aliyu Usman1, Nurain Izzaty2, Rizwan Ibrahim3, Muslich Hartadi Sutanto4, Sri Sunarjono5
1Aliyu Usman*, Department of Civil & Environmental Engineering, Universiti Teknologi PETRONAS, Perak, Malaysia.
2Nurain Izzaty, Department of Civil & Environmental Engineering, Universiti Teknologi PETRONAS, Perak, Malaysia.
3Rizwan Ibrahim, Department of Civil & Environmental Engineering, Universiti Teknologi PETRONAS, Perak, Malaysia.
4Muslich Hartadi Sutanto, Department of Civil & Environmental Engineering, Universiti Teknologi PETRONAS, Perak, Malaysia.
5Sri Sunarjono, Department of Civil Engineering, Universitas Muhammadiyah Surakarta, Indonesia.
Manuscript received on October 14, 2019. | Revised Manuscript received on 23 October, 2019. | Manuscript published on November 10, 2019. | PP: 4435-4430 | Volume-9 Issue-1, November 2019. | Retrieval Number: A5257119119/2019©BEIESP | DOI: 10.35940/ijitee.A5257.119119
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Bitumen modification is done to enhance the properties of bitumen related to elasticity, temperature susceptibility, softening point etc. This research intends to assess the effects of natural rubber latex (NRL) in liquid form as a bitumen modifier. Conventional tests, temperature susceptibility and phase separation due to hot storage were investigated using two separate mixing speeds of 1200 and 1300 revolution per minutes (rev/min). Morphology due to the addition of NRL has also been explored utilizing Atomic Force Microscopy (AFM). NRL was incorporated into the bitumen by weight of the binder for the modification at three different amounts (i.e. 3%, 5% and 6%). Based on the softening point, penetration value, temperature susceptibility and storage stability the latex-modified asphalt binder were analyzed. Results of the investigation showed that owing to enhancement in viscoelastic properties, the latex-modified asphalt binder will not undergo phase separation during hot temperature storage. Meanwhile, a uniform dispersed network was indicated by the morphological analysis with the presence of three phases of para, peri and cata. It can be deduced from the results obtained that the latex-modified asphalt binders will perform better in terms of softening point, penetration value and susceptibility due to temperature.
Keywords: Natural Rubber Latex, Modified Bitumen, Atomic Force Microscopy, Temperature Susceptibility, Storage Stability.
Scope of the Article: Bio-Science and Bio-Technology