Rheological Characteristics of Epoxidized Natural Rubber Modified Bitumen

Abstract

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%.

Engineering characterisation of epoxidized natural rubber-modified hot-mix asphalt

“…These properties in turn facilitate increased oil resistance, enhanced adhesion, damping, and reduced gas permeation [ 16 , 17 ]. Previous studies also report that ENR increased the viscosity and stiffness and decreased the temperature susceptibility of the binder [ 18 – 20 ].…”

Physical and rheological properties of acrylate–styrene–acrylonitrile modified asphalt cement

“…This temperature susceptibility limits its application and, therefore, it is essential to enhance the performance of AC by the addition of various modifiers, such as rubber, polymer, and nanoparticles [5][6][7]. In recent years, polymeric materials are commonly used as additives for modifying asphalt-road surfaces [4,8], thereby mitigating numerous main causes of asphalt-pavement disasters that occurred over the last years [9][10][11][12]. These polymers were reported to improve the properties of bitumen, such as its stiffness at high temperatures, cracking resistance at low temperatures, moisture resistance, and fatigue life [13,14].…”

Optimization of physical and mechanical properties of glycerol - modified natural rubber/starch - filled carbon black composites using two level factorial design

“…These values were very close to unity (R² = 1), where almost all the variations were presented by the model. This indicated the accuracy of the regression models in explaining the system hence predicting the significance for the two factors involved in this study [21,24].…”