Characteristics of elastomeric and plastomeric binders in contact with natural asphalts

Widyatmoko, Iswandaru; Elliott, Richard

doi:10.1016/j.conbuildmat.2005.12.025

Cited by 105 publications

(66 citation statements)

References 1 publication

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“…The higher values of phase angles corresponded to binders that became more viscous, also with lower values and more elastic in nature. In general, this reflects a trade-off between high and low temperature performances of bitumen binders 37 . The phase angle is the shift between the applied stress and the resultant strain.…”

Section: Analysis Of Phase Angle Results At 76 °Cmentioning

confidence: 99%

Investigating the rheological properties of crumb rubber modified bitumen and its correlation with temperature susceptibility

Mashaan

Karim

2012

Mat. Res.

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There is substantial evidence on the advantages of using crumb rubber in enhancing conventional bitumen properties, gaining environmental protection and boosting industrial-economical benefits. Thus, the use of this ingenious additive in bitumen modification through sustainable technology is highly advocated.The main objective of this research is to investigate the effects of different blending conditions (of time and temperature) and various crumb rubber contents on the properties of bitumen binders. Testing was conducted using the Dynamic shear rheometer (DSR) test and softening point test. The results showed that differing crumb rubber contents and blending temperature have significant effects on modified binder properties whereas the blending time showed an insignificant effect. Higher blending temperature and crumb rubber content were found to influence the interaction of bitumen-rubber blends and also increased the swelling rate of rubber particles, resulting in an increase in complex shear modulus (G*), storage modulus (G'), loss modulus (G") and softening point as well as a decrease in phase angle (δ). Thus, the modified bitumen became less susceptible to deformation after stress removals. The study also presented a considerable relationship between rheological parameters (G*, G', G' and δ) and softening point in terms of predicting physical-mechanical properties regardless of blending conditions. Thus, in terms of elasticity for the softening point data, the storage modulus and phase angle were found to be good indicators of binder elasticity. When softening point is made available, a prediction about binder ability to recover its original shape after stress removals can be done.

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Section: Analysis Of Phase Angle Results At 76 °Cmentioning

confidence: 99%

Investigating the rheological properties of crumb rubber modified bitumen and its correlation with temperature susceptibility

Mashaan

Karim

2012

Mat. Res.

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“…The graphical relationship of G* vs δ is referred to as a black curve. The shifting of the G* vs. δ curves from the curve of the base binder (TLA and TPB) due to modification such as the addition of PS reflects changes in composition or structure caused by the addition of the PS additive (Widyatmoko and Elliott, 2008;Maharaj, 2009). As shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The performance properties of fatigue cracking resistance and rutting resistance (G*sin δ and G*/sin δ respectively) were significantly higher for parent TLA and PS modified TLA blends compared to the parent TPB and PS modified TPB blends. The unique components of TLA are responsible for its world renowned superior performance characteristics (Widyatmoko and Elliott, 2008). Composition studies indicated that TLA contains 35.3% wt inorganic material which was found to be a kaolinitic in nature.…”

Section: Discussionmentioning

confidence: 99%

Rutting and Fatigue Cracking Susceptibility of Polystyrene Modified Asphalt

Mohamed¹,

Ramlochan²,

Maharaj³

2017

American Journal of Applied Sciences

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Abstract:The absence of studies investigating the influence of waste Polystyrene (PS) on the performance characteristics of rutting resistance and fatigue cracking resistance of the indigenous asphaltic materials Trinidad Lake Asphalt (TLA) and Trinidad Petroleum Bitumen (TPB), has hindered the possible use of PS as a performance enhancer as observed with other asphalts from different sources thus also developing a sustainable approach for the disposal of PS. The influence of PS on TLA and TPB was investigated by measuring the rheological properties of complex modulus (G*) and phase angle (δ) of prepared blends and calculating the fatigue cracking resistance and rutting resistance parameters (G*sin δ and G*/sin δ respectively). The addition of PS to TLA resulted in an increase in the fatigue cracking resistance as well as the rutting resistance compared to the pure TPB binder. Despite having improvements in rutting resistance due to PS addition, the fatigue cracking resistance of the TPB parent binders were superior compared with the PS modified TPB blends. The incremental increase in temperatures for TPB and TLA based blends resulted in gradual improvements in their fatigue cracking resistances but gradual deterioration in the rutting resistance of the modified blends. The conclusions were identical for both the Research Program Super pave specification and the Strategic Highway Research Program specifications. There is strong rheological evidence of the possibility to utilize waste PS as an asphalt performance enhancer for both TLA and TPB thus creating a sustainable strategy for the reuse of waste PS.

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“…However, as natural bitumen, it displays ample content of asphaltenes, proper content ratio of aromatic to resins, high softening point, and thus perfect stabilization at high temperature and many other unique performances for producing asphalt. That is exactly why it is well known that natural bitumen can be used as an excellent bitumen modifier in order to obtain improved performance (Zhang et al, 2009;Widyatmoko and Elliott, 2008;Jada and Salou, 2002). Based on the above factors, simply blending a relatively lower content of bitumen extract into certain types of vacuum residues with high saturated and resins content, such as those from Oman, Iran crude oil and Saudi Arabian light crude oil, or fluid catalytic cracking (FCC) slurry, etc., may permit it to produce high-grade road asphalt meeting the domestic specification of SH/T 0522-2000 or GB/T 15180-2000.…”

Section: Experiments On Extracting Bitumen From Asphaltic Sandmentioning

confidence: 94%

Physicochemical Characteristic and Potential Utilization of an Indonesian Asphaltic Sand

Zhang

2014

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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Despite considerable efforts on deposit asphaltic sand worldwide, there has been limited research on physicochemical property and comprehensive utilization of asphalt from Indonesia. In this article, an Indonesian asphaltic sand and its extracted products were characterized by a series of analysis tests. Experimental result of 30% bitumen extract shows potentially great value in recovery and utilization of asphaltic sand. Up to 70% asphaltene and resin in the bitumen brings about high density, high viscosity, and high softening point, which suggests the extracted bitumen can be used as an excellent modifier of high-grade road asphalt, building asphalt, and special-purpose asphalt. Moreover, the solid minerals remaining can also be used as a good filler or as an assistant of cement, rubber, and so on.

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Characteristics of elastomeric and plastomeric binders in contact with natural asphalts

Cited by 105 publications

References 1 publication

Investigating the rheological properties of crumb rubber modified bitumen and its correlation with temperature susceptibility

Investigating the rheological properties of crumb rubber modified bitumen and its correlation with temperature susceptibility

Rutting and Fatigue Cracking Susceptibility of Polystyrene Modified Asphalt

Physicochemical Characteristic and Potential Utilization of an Indonesian Asphaltic Sand

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