Evaluation of thermal and mechanical properties of recycled polyethylene modified bitumen

Fuentes-Audén, Cristina; Herrera, Juan Andrés Sandoval; Jerez, Abel; Navarro, Francisco; Martínez‐Boza, F.J.; Partal, P.; Gallegos, C.

doi:10.1016/j.polymertesting.2008.09.006

Cited by 118 publications

(58 citation statements)

References 32 publications

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“…Consequently, all these results suggest an improved thermal resistance [28,29], as clearly revealed by the rutting parameter presented in Figure 4.…”

Section: In-service Performance Of the Modified Bitumensmentioning

confidence: 60%

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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“…Consequently, all these results suggest an improved thermal resistance [28,29], as clearly revealed by the rutting parameter presented in Figure 4.…”

Section: In-service Performance Of the Modified Bitumensmentioning

confidence: 60%

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

Cuadri¹,

García‐Morales²,

Navarro³

et al. 2014

Fuel

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“…The meaning of this parameter can be interpreted by a hypothetical dilution process. Some previous investigations [1,30] have observed that the swelling ratio of the polymer in PMB decreases when the polymer content increases, lightly or sharply depending on the material properties and discussed range of polymer content. Within the practical range of polymer content in PMB, the swelling ratio is relatively high and can be up to nine (by volume in the three-dimensional case and by area in the two-dimensional case) [31].…”

Section: Figure 1 Phase Diagram (A) and Free Energy Curves (B)mentioning

confidence: 98%

“…As for the dilution parameter , the values can be preliminarily estimated based on the reported swelling ratio values of polymer in PMB. According to the measurement results by [1,30,31], it is believed that may range from 5.0 to 9.0 in most cases within the practical range of polymer content in PMB.…”

Section: Simulation Environment and Parametersmentioning

confidence: 99%

Modelling and numerical simulation of phase separation in polymer modified bitumen by phase-field method

Zhu

Balieu

et al. 2016

Materials & Design

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In this paper, a phase-field model with viscoelastic effects is developed for polymer modified bitumen (PMB) with the aim to describe and predict the PMB storage stability and phase separation behaviour. The viscoelastic effects due to dynamic asymmetry between bitumen and polymer are represented in the model by introducing a composition-dependent mobility coefficient. A double-well potential for PMB system is proposed on the basis of the Flory-Huggins free energy of mixing, with some simplifying assumptions made to take into account the complex chemical composition of bitumen. The model has been implemented in a finite element software package for pseudo-binary PMBs and calibrated with experimental observations of three different PMBs. Parametric studies have been conducted. Simulation results indicate that all the investigated model parameters, including the mobility and gradient energy coefficients, interaction and dilution parameters, have specific effects on the phase separation process of an unstable PMB. In addition to the unstable cases, the model can also describe and predict stable PMBs. Moreover, the phase inversion phenomenon with increasing polymer content in PMBs is also well reproduced by the model. This model can be the foundation of an applicable numerical tool for prediction of PMB storage stability and phase separation behaviour.

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“…A study on the effect of PE on the modified asphalt properties was conducted by Fuentes-Audé n et al [33]. They have concluded that PE incorporation in the asphalt shold not exceed 5%, otherwise the resulting viscosity would reduce the processability of the mixture.…”

Section: A Case Studiesmentioning

confidence: 99%

Utilization of Recycled Polyethylene Terephthalate (PET) in Engineering Materials: A Review

Sulyman¹,

Haponiuk²,

Formela³

2016

IJESD

111

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Abstract-In general, the quantity of plastics of all types consumed annually all over the world has been growing in a phenomenal way. The manufacturing processes, service industries and municipal solid wastes (MSW) generate numerous waste plastic materials. The increasing awareness about the environment has tremendously contributed to the concerns related with disposal of the generated wastes. It is believed that the management of solid waste is one of the major environmental concerns in the world. Due to limited space on landfills and increasing costs of plastics, utilization of waste plastics has become an attractive alternative for disposal. This paper provides a summary of experimental efforts on the utilization of poly(ethylene terephthalate) (PET) in civil engineering projects, mainly in road pavement, cements and concretes. Presented data indicate that use of waste PET for modification of asphalt, cement and concretes improved their selected properties, which makes economical this approach. Furthermore, using of waste PET in building materials reduce usage of new polymeric materials, which has significant effect on environment pollution (e.g. emission of carbon dioxide, waste disposal problems, etc.) Index Terms-Bitumen, building materials, concrete, PET, recycling.

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Evaluation of thermal and mechanical properties of recycled polyethylene modified bitumen

Cited by 118 publications

References 32 publications

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

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

Modelling and numerical simulation of phase separation in polymer modified bitumen by phase-field method

Utilization of Recycled Polyethylene Terephthalate (PET) in Engineering Materials: A Review

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