Interaction effects of crumb rubber modified asphalt binders

Jeong, Kyu-Dong; Lee, Soon‐Jae; Amirkhanian, Serji; Kim, Kwang W.

doi:10.1016/j.conbuildmat.2009.10.024

Cited by 114 publications

(50 citation statements)

References 9 publications

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“…In 90 minutes of reaction time, the crumb rubber is fully incorporated in the bitumen binder. However, a study 1 showed that longer blending time has a significant effect on the binder properties, resulting in an increase in viscosity and rutting resistance. In recent years, researches on applications of rubberised bitumen binders have reported many advantages.…”

Section: Investigationsmentioning

confidence: 99%

“…Higher crumb rubber content led to improved physical and rheological properties of modified bitumen binder through higher softening point, an increase in viscosity and better rutting resistance 1,[13][14][15][16][17][18][19] . In the current study, crumb rubber content is highly significant in the elevation of the softening point leading to less susceptible temperatures of has a significant effect on rutting resistance, viscosity and high failure temperature of modified binders 1,23 .…”

Section: Comparison Of Findings With Previous Studiesmentioning

confidence: 99%

“…In an attempt to decrease the magnitude of this issue, crumb rubber modifier (CRM) obtained from waste tyre rubber has gained interest in asphalt modification. Generally, the rheological and performance properties of rubberised bitumen binder are influenced by blending conditions and crumb rubber contents [1][2][3] . Bitumen is a dark black semisolid material, obtained from the atmospheric and vacuum distillation of crude oil during petroleum refining.…”

Section: Introductionmentioning

confidence: 99%

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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: Investigationsmentioning

confidence: 99%

Section: Comparison Of Findings With Previous Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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 use of crumb rubber in asphalt pavements has shown promising results in previous studies (Shafabakhsh et al 2014;Moreno et al 2013;Hossain et al 2016;Ghavibazoo, Abdelrahman 2014). Considering facts, that crumb rubber modified bitumen performance mainly depends on processing conditions, there are still open questions related with modifying temperature, interaction time, crumb rubber type and amount (Lo Presti et al 2012;Jeong et al 2010;Willis et al 2013;Wang et al 2013).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Crumb Rubber on Modified Bitumen Properties

Šernas

Čygas

Vaitkus

et al. 2017

Proccedings of 10th International Conference "Environmental Engineering"

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Abstract. Rubber derived from grinding of recycled cars and trucks tyres may be successfully used as a bitumen modifier. Number of researches reported sufficient characteristics of rubber modified asphalt binders or modified asphalt mixes in terms of improved permanent deformation and fatigue cracking. The behavior of crumb rubber asphalt binders depends on several factors, such as modification method, rubber content and size, modification temperature, mixing speed and time applied during the digestion process. The aim of this study is to evaluate the effect of crumb rubber amount and type on modified bitumen low and high temperature properties. This paper presents results of unmodified bitumen, crumb rubber crumb rubber and polymer modified bitumen. Low and high temperature properties have been evaluated using bending beam rheometer and dynamic shear rheometer. Moreover, softening point and viscosity tests have been performed. The study results revealed that crumb rubber modified bitumen performed better than pure bitumen and similarly to polymer modified bitumen.

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“…As is known in [6], the reaction time and the developmental temperature have important implications for the rubber asphalt performance indicators based on DSR and GPC methods. It is reported that with the powder dosage increasing, the rubber asphalt temperature sensitivity is getting steadily worse based on Brookfield viscosity in [7][8].…”

Section: Introductionmentioning

confidence: 99%