Rheological Characteristics of Epoxidized Natural Rubber Modified Bitumen

2014 ◽  
Vol 505-506 ◽  
pp. 174-179 ◽  
Author(s):  
Ramez A. Al-Mansob ◽  
Amiruddin Ismail ◽  
Nur Izzi Md Yusoff ◽  
Che Husna Azhari ◽  
Mohamed Rehan Karim ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Storage Stability ◽  
Asphalt Mixture ◽  
Epoxidized Natural Rubber ◽  
Rheological Characteristics ◽  
Polymer Modification ◽  
Modified Bitumen ◽  
Modified Binders ◽  
Temperature Susceptibility

Polymer modified bitumens have tended to be the most popular among the various types of modified binders that are available worldwide. Polymer modification significantly alters the rheological characteristics of the binder, thereby requiring the use of fundamental rheological testing methods to provide an indication of the performance of the binder and subsequently the asphalt mixture. In this paper the characterization of bitumen modified with epoxidized natural rubber (ENR) was done with four percentages of ENR content. The effects of the modifier on the conventional properties, storage stability and rheological properties were investigated. The results indicated that storage stability of ENR modified bitumens (ENRMB) were mainly dependent on the ENR content. ENR reduced the temperature susceptibility. The degree of the improvement generally increased with ENR content up to 9%.

THE INFLUENCE OF POLYMER ON RHEOLOGICAL AND THERMO OXIDATIVE AGING PROPERTIES OF MODIFIED BITUMEN BINDERS

2017 ◽  
Vol 79 (6) ◽  
Author(s):  
Nura Bala ◽  
Ibrahim Kamaruddin ◽  
Madzlan Napiah
Keyword(s):  
Softening Point ◽  
Storage Stability ◽  
Elastic Behavior ◽  
Modified Bitumen ◽  
Oxidative Aging ◽  
Modified Binders ◽  
Aging Resistance ◽  
Lower Temperature ◽  
Modified Binder ◽  
Temperature Susceptibility

Polymer modified bitumen (PMB) has been used for many years to improve the performance of asphalt concretes against premature pavement defects. In this research, modified samples were prepared with 2%, 3%, 4%, 5% and 6% Linear Low Density Polyethylene (LLDPE) polymer by weight of bitumen binder. The influence of LLDPE polymer was evaluated through binder properties test which includes penetration, softening point, storage stability, temperature susceptibility, rutting, fatigue and thermal oxidative aging resistance from a dynamic shear rheometer (DSR) measurements at a temperature of 20 OC to 60 OC. Results show that LLDPE polymer has a significant effect on binder properties. Penetration decreases and softening point increases with increasing LLDPE content on the modified binder after aging, which implies LLDPE improves the thermo oxidative aging resistance of the binder. Furthermore, the storage stability test shows that at higher LLDPE concentrations phase separation may occur. DSR analysis shows that modified binders have lower temperature susceptibility and higher aging resistance with increased stiffness and elastic behavior compared with unmodified binders. In addition, modified binders show enhanced resistance against high temperature rutting and at low temperature fatigue performance. It was found that the optimum LLDPE content is 6%.

Physical and rheological characteristics of liquid natural rubber modified bitumen

1998 ◽  
Vol 68 (1) ◽  
pp. 53-61 ◽  
Author(s):  
N. Radhakrishnan Nair ◽  
N. M. Mathew ◽  
Sabu Thomas ◽  
Prabha Chatterjee ◽  
M. A. Siddiqui
Keyword(s):  
Natural Rubber ◽  
Rheological Characteristics ◽  
Modified Bitumen ◽  
Liquid Natural Rubber

Fabrication and Characterization of Epoxidized Natural Rubber-Chitosan Membrane

2013 ◽  
Vol 844 ◽  
pp. 205-208 ◽  
Author(s):  
Wirach Taweepreda ◽  
Anuchit Wichianchom
Keyword(s):  
Ionic Conductivity ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Chitosan Solution ◽  
Epoxidized Natural Rubber ◽  
Ether Linkage ◽  
Ft Ir ◽  
Lcr Meter ◽  
Ft Ir Spectroscopy

The membranes obtained from the mixtures of epoxidized natural rubber latex (ENR) and chitosan solution were prepared and characterized. The chemical structure of the membrane was confirmed by ATR-FT-IR spectroscopy and found the peak at 1315 and 1155 cm-1 indicated ether linkage was formed between epoxide group and chitosan corresponding with an enhancement of their mechanical properties which were observed using dynamic mechanical thermal analysis (DMTA). The dielectric properties and ionic conductivity of membrane were investigated using LCR meter and found that the ionic conductivity was increased with increasing the chitosan content.

Characterization of epoxidized natural rubber by 2D NMR spectroscopy

Polymer ◽  
2007 ◽  
Vol 48 (3) ◽  
pp. 750-757 ◽  
Author(s):  
Takayuki Saito ◽  
Warunee Klinklai ◽  
Seiichi Kawahara
Keyword(s):  
Nmr Spectroscopy ◽  
Natural Rubber ◽  
2D Nmr ◽  
Epoxidized Natural Rubber ◽  
2D Nmr Spectroscopy
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