Recycled asphalt mixtures produced with high percentage of different waste materials

Abreu, Liliana; Oliveira, Joel; Silva, Hugo Manuel Ribeiro Dias da; Fonseca, Pedro

doi:10.1016/j.conbuildmat.2015.03.063

Cited by 55 publications

(18 citation statements)

References 20 publications

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“…From an economic and environmental point of view, the possibility to produce bituminous mixtures without the addition of heat, results in a significant reduction in energy consumption and emissions during the in plant production and laying processes (Jacobson and Hornwall, 2000; Pettinari and Simone, 2015; . More recent studies (Silva et al, 2012;Simone et al, 2012;Abreu et al, 2015) also assessed the possibility of incorporating up to 100 % of RAP in fully recycled mixtures.…”

Section: Introduction and Scopementioning

confidence: 99%

A laboratory and filed evaluation of Cold Recycled Mixture for base layer entirely made with Reclaimed Asphalt Pavement

Sangiorgi

Tataranni

Simone

et al. 2017

Construction and Building Materials

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Asphalt concrete (AC) recycling is probably the most cost-effective technique for the rehabilitation of stressed road pavements and for the construction of new ones. The increased interest in this technology comes from the need of reducing the costs connected to the production processes and to the use of virgin raw materials. In fact, the benefits connected to the use of Reclaimed Asphalt Pavement (RAP) are related to the possibility of substituting the natural aggregates and the virgin binder of an AC mixture, without negatively affecting its mechanical properties. When this process is made at ambient temperature (Cold Recycled Mixes-CRM), more advantages are brought about with, above all, the reduction in energy consumption and emissions during in plant production and laying, in addition to the actual possibility of achieving durable pavement layers. A CRM totally made of RAP is proposed in this research, the main goal of which was to evaluate the different physical and mechanical characteristics derived by the large use of recycled materials. According to the final mix-design, CRM does not show significant differences in terms of physical properties, when compared to a Hot Mix Asphalt (HMA) for base layers. Moreover, even if the experimental mixture *Manuscript Click here to view linked References

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Section: Introduction and Scopementioning

confidence: 99%

A laboratory and filed evaluation of Cold Recycled Mixture for base layer entirely made with Reclaimed Asphalt Pavement

Sangiorgi

Tataranni

Simone

et al. 2017

Construction and Building Materials

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“…In terms of existing asphalt pavement construction technology, hot mix asphalt (HMA) is a main technology [6][7][8]. During the production of hot mix asphalt, a large amount of fuel was consumed, and the massive toxic gases and dust was released [9,10]. These toxic gases would pollute the entire environment and seriously endanger human health [11,12].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation on Physical, Rheological Thermal and Microscopic Characteristics of Water-Foamed Asphalt under Three Environmental Conditions

Guo

Li³

et al. 2020

Coatings

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Applications of water-foamed binders have received widespread attention due to its environmental and economic benefits. This study aims to evaluate the properties of water-foamed asphalt under three environmental conditions (high-temperature evaporation, low-temperature frozen and the freeze–thaw cycle). Conventional physical properties tests, dynamic shear rheometer test (DSR), differential scanning calorimetry test (DSC) and scanning electron microscope test (SEM) are employed to assess the physical, rheological thermal and microscopic characteristics of samples. Conventional physical properties test results showed that the performance of a foamed binder had declined under three environmental processes and the foamed asphalt gradually returned to the characteristics before being foamed, with the increase of process time. A comprehensive evaluation index, deterioration degree was proposed based on the test results and entropy theory, and the deterioration process of the foamed binder under three environmental conditions was quantified. Moreover, freeze–thaw (F–T) cycles had been proved to have the most significant influence on the performance of a foamed binder among three environmental factors, which was a key issue that limits the application and promotion of foamed asphalt in seasonal frozen regions. The DSR test showed that the resistance to high-temperature permanent deformation of the foamed binder was improved after F–T cycles, and the fatigue resistance became worse. The sensitivity analysis of complex modulus and frequency illustrated that foamed asphalt after F–T cycles were more sensitive to the loading frequency and less sensitive to the temperature. The DSC test indicated that the thermal stability of foamed asphalt was improved after F–T cycles. The disappearance of circular “cavitation” observed through SEM test revealed that moisture of foamed asphalt was gradually precipitated and self-healing phenomenon occurred during F–T cycles.

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“…Among these solutions, the addition of polymeric materials may be very efficient. Indeed, plastic can actually improve the mixture and the pavement performance [19][20][21][22][23][24][25], because it can affect in a remarkable way the physical and mechanical behaviour of the binder. Previous studies proved that, in particular, polymers can improve rutting resistance, high-temperature stiffness, susceptibility to temperature variations and, sometimes, also fatigue cracking resistance [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Laboratory and in-situ tests for estimating improvements in asphalt concrete with the addition of an LDPE and EVA polymeric compound

Celauro

Bosurgi

Sollazzo

et al. 2019

Construction and Building Materials

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Recycled asphalt mixtures produced with high percentage of different waste materials

Cited by 55 publications

References 20 publications

A laboratory and filed evaluation of Cold Recycled Mixture for base layer entirely made with Reclaimed Asphalt Pavement

A laboratory and filed evaluation of Cold Recycled Mixture for base layer entirely made with Reclaimed Asphalt Pavement

Laboratory Investigation on Physical, Rheological Thermal and Microscopic Characteristics of Water-Foamed Asphalt under Three Environmental Conditions

Laboratory and in-situ tests for estimating improvements in asphalt concrete with the addition of an LDPE and EVA polymeric compound

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