Mechanistic performance evaluation of pavement sections containing RAP and WMA additives in Manitoba

Kim, Dahae; Norouzi, Amirhossein; Kass, S; Liske, T; Kim, Y. Richard

doi:10.1016/j.conbuildmat.2016.12.035

Cited by 31 publications

(7 citation statements)

References 21 publications

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“…Nonetheless, the addition of high RAP contents in asphalt mixtures typically tends to improve the resistance to permanent deformation as a result of the physical hardening and chemical aging (i.e., because of the evaporation of the lighter oil fractions in the bitumen) suffered by the asphalt binder during its service life. Analogous results for mixes containing high and total rates of RAP and additives have been found and contrasted by multiple authors [74,75,76,77,78,79]; whilst the results reported by other authors are rather less conclusive, in the sense that mixtures manufactured at low temperatures and emulsified bitumen are typically characterized by having a lower rutting performance than that of the conventional HMA mixtures [15].…”

Section: Advanced Mechanical Characterization Of the Mixturesupporting

confidence: 57%

Laboratory Compaction Study and Mechanical Performance Assessment of Half-Warm Mix Recycled Asphalt Mixtures Containing 100% RAP

Marcobal¹,

Lizárraga

Gallego

2019

Materials

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The use of low-carbon and energy-efficient paving technologies is gaining worldwide acceptance in recent years as a means to encourage commitment towards more sustainable pavement management practices. However, there still remain some technical gaps regarding mix design procedures for the half-warm mix asphalt (HWMA) mixtures’ preparation and characterization in the laboratory. To this end, three different laboratory compaction methods (e.g., static load, Marshall impactor, and gyratory compactor) were selected and put into assessment to define the most suitable compaction test method for half-warm mix recycled asphalt (HWMRA) mixtures with 100% reclaimed asphalt pavement (RAP). Posteriorly, the effect of four-accelerated curing treatments (0, 24, 48, and 72 h) on the mixtures’ mechanical performance was investigated. Then, advanced mechanical characterization of the mixture performance was conducted to quantify the indirect tensile strength (ITS), stiffness modulus, rutting, and four-point bending (4PB) fatigue test. Thus, based on the authors’ findings, the HWMRA mixtures with 100% RAP and emulsified bitumen exhibited proper volumetric (e.g., air voids and density) and mechanical behavior in terms of moisture damage, ITS, stiffness modulus, rutting, and fatigue cracking. These findings encourage greater confidence in promoting the use of these sustainable asphalt mixes for their use in road pavements or urban streets.

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Section: Advanced Mechanical Characterization Of the Mixturesupporting

confidence: 57%

Laboratory Compaction Study and Mechanical Performance Assessment of Half-Warm Mix Recycled Asphalt Mixtures Containing 100% RAP

Marcobal¹,

Lizárraga

Gallego

2019

Materials

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“…Refs. [49,50] mention that the higher stiffness of the RAP could affect the performance of the asphalt mixtures, such as with crack propagation increase and fatigue resistance decrease. The moisture content of the RAP is another point of concern that could also affect the service life of the asphalt layer [24].…”

Section: Recommendationsmentioning

confidence: 99%

Potential Carbon Footprint Reduction for Reclaimed Asphalt Pavement Innovations: LCA Methodology, Best Available Technology, and Near-Future Reduction Potential

et al. 2021

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The carbon footprints of asphalt mixtures with increasing reclaimed asphalt pavement (RAP) content were estimated using a life-cycle assessment methodology. Three asphalt mixtures with different applications and technical requirements, namely porous asphalt (PA), stone mastic asphalt (SMA), and asphalt concrete (AC), were included. The technology leaps needed to achieve asphalt mixtures containing up to 93% RAP were modelled. Mixtures containing up to 57% RAP were hot-mix asphalts (175 °C), while mixtures containing more RAP were produced at 135 °C and 105 °C. The energy requirements and their respective carbon footprints were calculated based on the heat capacity of the aggregates, RAP, and other bituminous materials. Furthermore, the effects of changing the country’s electricity mix were also evaluated. A potential carbon footprint reduction of between 55% and 64% was found for one tonne of asphalt containing 93% RAP and produced at 105 °C compared to the 0% RAP mixture produced at 175 °C. Considering the uncertainty of this technology at its early stage of development, the reduction could be as low as 45% or as high as 79%. Changing the electricity mix to one that is likely to be implemented until 2030 in the Netherlands further reduces the footprint by 10%.

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“…This reduces the energy required for the manufacture of asphalt mixtures and polluting emissions into the atmosphere (You & Goh, 2008, Bonaquist, 2011, Mohammad et al 2015, helps reduce wear and tear of asphalt plants (Biro, Gandhi & Amirkhanian, 2009) and decreases the aging of asphalt (Ran et al, 2010;Rondón, Noguera & Reyes, 2015). Other advantages reported with the use of WMA are: a) they allow their extension and compaction in colder environments (Ran et al, 2010); b) can be used to produce mixtures where the viscosity of the asphalt binder needs to be decreased, for example in asphalt mixtures modified with elastomeric or plastomeric polymers (Liu, Cao & Fang, 2010, Habal & Singh, 2017, Singh et al, 2018 , recycled RAP type -Reclaimed Asphalt Pavement (Howard, Doyle & Cox, 2013;Zhao et al, 2015;Kim et al, 2017; or porous (Frigio et al, 2016); c) the WMA allow to be transported greater distances before being extended and compacted (Robjent & Dosh, 2009). The WMA can be manufactured by modifying the asphalt or asphalt mix with an additive such as Cecabase, Rediset or Sasobit, among others.…”

Section: Warm MIX Asphaltmentioning

confidence: 99%

Evaluation of a Warm Mix Asphalt Manufactured with Blast Furnace Slag

Quintana¹,

Chaves-Pabón²,

Escobar³

2018

MAS

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The study evaluated the response under monotonic loading (Marshall and indirect traction) and the resistance to moisture damage and abrasion of a warm mix asphalt (WMA) manufactured with an additive called HUSIL, when the coarse fraction of the aggregate was replaced by a blast furnace slag (BFS). In conclusion, it is reported that the additive is capable of reducing the manufacturing temperature of the asphalt mixture by 30 ° C. Additionally, the BFS can be used as a partial substitute for the coarse fraction of aggregates in WMA, since when replacing it in 21%, the mixture reach a significant increase in stiffness, resistance to moisture damage, and similar resistance to abrasion with respect to the control asphalt mixture.

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Mechanistic performance evaluation of pavement sections containing RAP and WMA additives in Manitoba

Cited by 31 publications

References 21 publications

Laboratory Compaction Study and Mechanical Performance Assessment of Half-Warm Mix Recycled Asphalt Mixtures Containing 100% RAP

Laboratory Compaction Study and Mechanical Performance Assessment of Half-Warm Mix Recycled Asphalt Mixtures Containing 100% RAP

Potential Carbon Footprint Reduction for Reclaimed Asphalt Pavement Innovations: LCA Methodology, Best Available Technology, and Near-Future Reduction Potential

Evaluation of a Warm Mix Asphalt Manufactured with Blast Furnace Slag

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