Viscous properties and microstructure of recycled eva modified bitumen

García‐Morales, M.; Partal, P.; Navarro, Francisco; Martínez‐Boza, F.J.; Gallegos, C.; González, Nekane; González, O.; Muñoz, Manuel López

doi:10.1016/s0016-2361(03)00217-5

Cited by 197 publications

(90 citation statements)

References 13 publications

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“…Ea, only fitting parameter in Eq. (1), has been elsewhere related to the binder thermal susceptibility [9]. Thus, Fig.3 demonstrates that, in the temperature range selected, the Th-modified bitumen presents the lowest value of activation energy (and consequently, lowest thermal susceptibility).…”

Section: Linear Viscoelastic Behaviour Of Thiourea-modified Bindersmentioning

confidence: 77%

Enhancing the viscoelastic properties of bituminous binders via thiourea-modification

Cuadri¹,

García‐Morales²,

Navarro³

et al. 2012

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Although added in a very low concentration, bitumen controls the final properties and performance of the resulting asphalt mixture. As an alternative to classic bitumen modification with polymers, we herein propose the use of thiourea, which has proved to efficiently enhance the binder thermo-rheological properties in a broad temperature interval. As revealed by thermogravimetric and chemical analysis, benefits above may derive from new structures, probably formed by the interaction between ammonium thiocyanate and bitumen most polar fraction. Thus, flexural DMTA and dynamic shear tests demonstrated an improvement in the binder flexibility and an increase in its elasticity, at low and medium/high in-service temperatures, respectively. In addition, this research emphasizes the use of isothermal frequency sweep tests (and frequency/temperature-dependence conversion) as a means of achieving glass transition temperature values which, in contrast to isochronal temperature sweep tests, do not depend on the selected heating rate.

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Section: Linear Viscoelastic Behaviour Of Thiourea-modified Bindersmentioning

confidence: 77%

Enhancing the viscoelastic properties of bituminous binders via thiourea-modification

Cuadri¹,

García‐Morales²,

Navarro³

et al. 2012

Fuel

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“…Regarding the use of polymer (plastic) wastes for asphalt modification, those mentioned in the literature are mainly low density polyethylene (LDPE) [24], high density polyethylene (HDPE) [25], polypropylene (PP) [26], ethylene-vinyl acetate (EVA) [27], [28], acrylonitrile-butadiene-styrene (ABS) [26], polyethylene terephthalate (PET) [29] and polyvinyl chloride (PVC) [30]. 2007; Awwad and Hbeeb [31] have investigated the improvement of asphalt modified with polyethylene (PE).…”

Section: A Case Studiesmentioning

confidence: 99%

“…According to the study of Garcí a-Morales et al [27], the modification of asphalt with recycled EVA led to very satisfying results. In their work, concentrations which were studied ranged from 0 to 9% wt.…”

Section: A Case Studiesmentioning

confidence: 99%

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

Sulyman¹,

Haponiuk²,

Formela³

2016

IJESD

108

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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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“…and waste (plastics from agriculture, crumb tyre rubber, etc.) (Fawcett and McNally 2001;García-Morales et al 2004Airey 2004).…”

Section: Introductionmentioning

confidence: 99%

The development of polyurethane modified bitumen emulsions for cold mix applications

et al. 2014

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Bitumen emulsions stand for an alternative paving practice to the traditional hot-mix asphalts. In addition, modified bitumen emulsions show a better performance than unmodified ones. This work studies the feasibility of obtaining polyurethane modified bitumen emulsions, in which an isocyanate-functionalized polyol constitutes the bitumen modifier (in varying concentration from 1 to 4 wt.%). Storage stability and high in-service performance are evaluated by means of evolution of droplet size distribution (DSD) and rheology tests, respectively. Regarding the emulsion stability, the key factor seems to be the bitumen modifier concentration used to prepare the modified emulsions. Thus, for a selected 50 wt.% bitumen fraction, there is a limit concentration (between 1 and 2 wt.%) above which the emulsion becomes unstable under storage. Hence, this result limits the modifier content that can be used in the emulsion and the final level of modification achieved if compared to the original nonmodified emulsion. On the other hand, the rheological characterization conducted on the emulsion residues at 60ºC has shown an improved resistance to deformation.In terms of applicability, polyurethane modified bitumens allows for the obtaining of modified emulsions which can be prepared at much lower temperatures than those derived from other polymers.

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Viscous properties and microstructure of recycled eva modified bitumen

Cited by 197 publications

References 13 publications

Enhancing the viscoelastic properties of bituminous binders via thiourea-modification

Enhancing the viscoelastic properties of bituminous binders via thiourea-modification

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

The development of polyurethane modified bitumen emulsions for cold mix applications

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