Engineering characterisation of epoxidized natural rubber-modified hot-mix asphalt.
Road distress results in high maintenance costs. However, increased understandings of asphalt behaviour and properties coupled with technological developments have allowed paving technologists to examine the benefits of introducing additives and modifiers. As a result, polymers have become extremely popular as modifiers to improve the performance of the asphalt mix. This study investigates the performance characteristics of epoxidized natural rubber (ENR)-modified hot-mix asphalt. Tests were conducted using ENR-asphalt mixes prepared using the wet process. Mechanical testing on the ENR-asphalt mixes showed that the resilient modulus of the mixes was greatly affected by testing temperature and frequency. On the other hand, although rutting performance decreased at high temperatures because of the increased elasticity of the ENR-asphalt mixes, fatigue performance improved at intermediate temperatures as compared to the base mix. However, durability tests indicated that the ENR-asphalt mixes were slightly susceptible to the presence of moisture. In conclusion, the performance of asphalt pavement can be enhanced by incorporating ENR as a modifier to counter major road distress.
Sustainable Urban Transport Research Centre (SUTRA), Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor, Malaysia.
Ramez A
RA
Al-Mansob
Sustainable Urban Transport Research Centre (SUTRA), Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor, Malaysia.
Amiruddin
A
Ismail
Sustainable Urban Transport Research Centre (SUTRA), Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor, Malaysia.
Nur Izzi Md
NI
Yusoff
Sustainable Urban Transport Research Centre (SUTRA), Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor, Malaysia.
Riza Atiq O K
RA
Rahmat
Sustainable Urban Transport Research Centre (SUTRA), Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor, Malaysia.
Muhamad Nazri
MN
Borhan
Sustainable Urban Transport Research Centre (SUTRA), Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor, Malaysia.
Shaban Ismael
SI
Albrka
Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor, Malaysia.
Che Husna
CH
Azhari
Department of Civil Engineering, University of Malaya, Jalan Universiti, Kuala Lumpur, Malaysia.
Mohamed Rehan
MR
Karim
D003252:Construction Materials / Q000032:analysis*; D055119:Elastic Modulus; D004738:Engineering / Q000379:methods; D004852:Epoxy Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D006358:Hot Temperature; D006838:Hydrocarbons / Q000138:chemical synthesis / Q000737:chemistry*; D008422:Materials Testing; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D012408:Rubber / Q000737:chemistry*; D013718:Tensile Strength
D004852:Epoxy Compounds; D006838:Hydrocarbons; D011108:Polymers; C006647:asphalt; D012408:Rubber