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...

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Bibliographic Details
Published in:PloS one 2017-02, Vol.12 (2), p.e0171648-e0171648
Main Authors: Al-Mansob, Ramez A, Ismail, Amiruddin, Yusoff, Nur Izzi Md, Rahmat, Riza Atiq O K, Borhan, Muhamad Nazri, Albrka, Shaban Ismael, Azhari, Che Husna, Karim, Mohamed Rehan
Format: Article
Language:English
Subjects:
Additives
Analysis
Asphalt
Asphalt pavements
Chemical engineering
Chemical properties
Civil engineering
Construction Materials - analysis
Durability
Elastic Modulus
Elasticity
Engineering - methods
Epoxy compounds
Epoxy Compounds - chemical synthesis
Epoxy Compounds - chemistry
Extreme values
Fatigue
High temperature
High temperatures
Hot Temperature
Hydrocarbons - chemical synthesis
Hydrocarbons - chemistry
Laboratories
Maintenance costs
Materials Testing
Mechanical properties
Mechanical tests
Mixes
Mixtures
Natural rubber
Physical Sciences
Polymers
Polymers - chemical synthesis
Polymers - chemistry
Road maintenance
Roads & highways
Rubber
Rubber - chemistry
Structural engineering
Technologists
Tensile Strength
Tires
Transportation planning
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Summary: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.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0171648