The Effects of Sasobit® Modifier on Binder at High and Intermediate Temperatures
Ahmad Kamil Arshad1, Frag Ahmed Ma Kridan2, Mohd Yusof Abdul Rahman3
1Ahmad Kamil Arshad, Faculty of Civil Engineering, University Technology Amadesa Resort Condominium. Desa Petaling. Jalan Kuala Lumpur.
2Frag Ahmed Ma Kridan, Faculty of Civil Engineering, University Technology Amadesa Resort Condominium. Desa Petaling. Jalan Kuala Lumpur.
3Mohd Yusof Abdul Rahman, Faculty of Civil Engineering, University Technology Amadesa Resort Condominium. Desa Petaling. Jalan Kuala Lumpur.
Manuscript received on January 21, 2013. | Revised Manuscript received on February 11, 2013. | Manuscript published on February 28, 2013. | PP: 81-84 | Volume-2 Issue-3, February 2013. | Retrieval Number: C1014022313 /2013©BEIESP
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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: Research in the laboratory was carried out to determine if the addition of warm mix asphalt additive (sasobit® ) has effects on the stiffness of the virgin bitumen and if the modified bitumen has the potential to increase the amount of Reclaimed Asphalt Pavement (RAP) used in warm mix asphalt. To fulfil this purpose, two types of samples have been prepared. The first was identified as control samples (virgin bitumen 80/100 penetration grade). The other was modifed using the same bitumen penetration grade with sasobit-additive in concentrations from 1% to 3 % by weight of binder at intervals of 0.5%, identified as saso mixes. Both groups were subjected to viscosity test at high service temperatures (115, 125, 135 °C) and intermediate service temperatures (70, 80, 95°C) as well as penetration test to all samples at 25°C to determine the effect of sa sobit additive on binder at ambient temperature. The results showed significant reduction in penetration value to all samples in all concentrations of the modifier on the bitumen. The results also showed decrease in viscosity values at high service temperatures to all modified samples compared to that of control samples. However, these values increased at intermediate temperatures to confirm the similar trend in penetration values, which indicated that the addition of sasobit on virgin binder increase the stiffness at low and intermediate temperatures. With regard to incorporating the recovered binder from RAP, the same trend was observed at high service temperature of 135°C to modified samples at sasobit concentration of 1.5% . This may assist in increasing the amount of RAP materials used with this modifier in the mix compared to the amount allowed in conventional mix.
Keywords: Warm Mix Asphalt, Sasobit additive, viscosity, high service temperature, intermediate service temperature, Reclaimed Asphalt Pavement.