Rheology of asphalts modified with glycidylmethacrylate functionalized polymers

Polacco, Giovanni; Stastna, Jiri; Biondi, Dario; Antonelli, Federico Roberto; Vlachovicova, Zora; Zanzotto, Ludo

doi:10.1016/j.jcis.2004.08.043

Cited by 168 publications

(115 citation statements)

References 45 publications

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“…Hence, different blends of bitumen with a large variety -4 -of modifiers have been studied [9,10]. The polymers used for the modification can be divided into three categories, namely thermoplastic elastomers, plastomers and reactive polymers [11,12]. However, the two first classes of polymers usually present a limited compatibility with bitumen.…”

Section: Introductionmentioning

confidence: 99%

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Processing of bitumens modified by a bio-oil-derived polyurethane

Cuadri¹,

García‐Morales²,

Navarro³

et al. 2014

Fuel

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Castor oil (CO) functionalized by isocyanate groups (-NCO) is proposed as a novel bio-based reactive polyurethane (PU) for bitumen modification. This work presents a comparative analysis conducted on blends of bitumen and 2 wt.% of a PU prepolymer prepared by NCO-functionalization of castor oil. Four preparation procedures were evaluated, which resulted from the combination of two processing times (1h or 24h, at 90ºC) followed by two different post-treatments (water addition or ambient curing for up to 6 months). It was found that the degree of modification attained after posttreatment depends on the previous processing conditions. Thus, short processing times are required if the binder is further subjected to ambient curing. Instead, the success of the water-addition modification falls on a previous long processing step. As revealed by rheological tests, ambient curing was seen to be by far a more efficient way of modification if compared to direct addition of water, and makes clear that the resulting binder evolves towards a better performance when in service. In that sense, Thin Layer Chromatography tests, Modulated DSC and AFM images demonstrated a more complex microstructure characterized by the presence of a larger content of molecules with higher polarity, size and molecular weight.

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Section: Introductionmentioning

confidence: 99%

“…However, the two first classes of polymers usually present a limited compatibility with bitumen. The addition of reactive polymers, which contain functional groups able to react with certain bitumen compounds, may yield some advantages in the resulting binder [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Processing of bitumens modified by a bio-oil-derived polyurethane

Cuadri¹,

García‐Morales²,

Navarro³

et al. 2014

Fuel

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“…The sample blends were prepared using the recommended process (Polacco et al, 2004). Aluminium cans of approximately 500 cm 3 were filled with 250 to 260 g of the asphalt binder and put in a thermoelectric heater Thermo Scientific Precision (Model 6555) where the temperature was raised to 200°C.…”

Section: Sample Preparationmentioning

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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“…Also, there is the epoxy opening ring that can react with the hydroxyl groups and causes the formation of an ether bond. The same reaction may happen through an amino group, and once the epoxy ring is open, crosslinking between the polymer chains may occur, not necessarily involving asphaltene molecules [3] . Examples of reactive polymers are thermoplastic elastomers functionalized with maleic anhydride and ethylene copolymers containing epoxy rings [3] .…”

Section: Introductionmentioning

confidence: 99%

“…The same reaction may happen through an amino group, and once the epoxy ring is open, crosslinking between the polymer chains may occur, not necessarily involving asphaltene molecules [3] . Examples of reactive polymers are thermoplastic elastomers functionalized with maleic anhydride and ethylene copolymers containing epoxy rings [3] . Various studies show the improvement of the characteristics of PAC by adding ethylene-butyl acrylate-glycidyl methacrylate terpolymer (EBGMA) [3][4][5][6] .…”

Section: Introductionmentioning

confidence: 99%