Development of blending chart for different degrees of blending of RAP binder and virgin binder

Shirodkar, Prashant; Mehta, Yusuf; Nolan, Aaron; Dubois, Éric; Reger, Darren; McCarthy, Leslie Myers

doi:10.1016/j.resconrec.2013.01.018

Cited by 52 publications

(30 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Given 6 the lack of results obtained from comprehensive field studies about the long-term performance of road 7 pavements incorporating new pavement engineering solutions, it is pertinent to consider that new 8 paving materials/solutions may not be as durable as the conventional materials. Furthermore, there is 9 also literature arguing that in some cases, not all of the binder on the recycled aggregates will be 10 mobilized (partial blending effects for RAP integration) (Shirodkar et al, 2013(Shirodkar et al, , 2011. In addition, the 11 degree of blending may be lower in WMA due to lower mixing temperatures, but this effect is not fully 12 known yet (Bowers et al, 2014;Gaitan et al, 2013).…”

Section: Sensitivity and Scenario Analysismentioning

confidence: 99%

Road route planning for transporting wind turbines in Europe

Autelitano¹,

Garilli²,

Giuliani³

2017

Transport Infrastructure and Systems

View full text Add to dashboard Cite

. Environmental and economic assessment of pavement construction and management practices for enhancing pavement sustainability. Resources, Conservation and Recycling, Elsevier, 2017, 116, pp.15-31. 10.1016/j.resconrec.2016 WMA mixtures, reducing energy consumed and emissions generated in mixtures production, applying 7 in-place recycling techniques, and implementing preventive treatments. In this study, a comprehensive 8 and integrated pavement life cycle costing-life cycle assessment model was developed to investigate, 9 from a full life cycle perspective, the extent to which several pavement engineering solutions, namely 10 hot in-plant recycling mixtures, WMA, cold central plant recycling and preventive treatments, are 11 efficient in improving the environmental and economic dimensions of pavement infrastructure 12 sustainability, when applied either separately or in combination, in the construction and management 13 of a road pavement section located in Virginia, USA. Furthermore, in order to determine the preference 14 order of alternative scenarios, a multicriteria decision analysis method was applied. The results showed 15 that the implementation of a recycling-based maintenance and rehabilitation strategy where the asphalt 16 mixtures are of type hot-mix asphalt containing 30% RAP, best suits the multidimensional and 17 conflicting interests of decision-makers. This outcome was found to be robust even when different 18 design and performance scenarios of the mixtures and type of treatments are considered. 19 20

show abstract

Section: Sensitivity and Scenario Analysismentioning

confidence: 99%

Road route planning for transporting wind turbines in Europe

Autelitano¹,

Garilli²,

Giuliani³

2017

Transport Infrastructure and Systems

View full text Add to dashboard Cite

show abstract

“…Several studies consistently concluded (Al-Qadi, Elseifi, & Carpenter, 2007;Al-Qadi et al, 2009;Kandhal & Foo, 1997;Khosla, Nair, Visintine, & Malpass, 2012;McDaniel, Soleymani, Anderson, Turner, & Peterson, 2000;Navaro et al, 2012;Shirodkar et al, 2011Shirodkar et al, , 2013) that the real re-activated binder degree comprises the abovementioned limit conditions. Therefore, a wrong assumption of the re-activated binder degree can cause an inaccurate choice of virgin binder quantity and grade with negative effects on pavement performance.…”

Section: Introductionmentioning

confidence: 97%

“…Previous researches (Khosla et al, 2012;Navaro et al, 2012;Shirodkar et al, 2011Shirodkar et al, , 2013 pointed to the development of methods for determining the proper re-activated binder degree by comparing the main rheological properties of the virgin binder with those estimated or measured for blends between re-activated and virgin binders. Other studies addressed the analysis by performing mechanical tests on recycled HMA prepared with various RAP contents and different mix designs (Al-Qadi et al, 2009;Kandhal & Foo, 1997;McDaniel et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Other studies addressed the analysis by performing mechanical tests on recycled HMA prepared with various RAP contents and different mix designs (Al-Qadi et al, 2009;Kandhal & Foo, 1997;McDaniel et al, 2000). Shirodkar et al (2013) studied the impacts of partial RAP binder re-activation on the critical grade of the blended binder (re-activated + virgin) by developing a chart for different degrees of re-activation (blending). Their study was based on the critical grade of blends related to different proportions between re-activated and virgin binders.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

New method to estimate the “re-activated” binder amount in recycled hot-mix asphalt

Stimilli

Virgili

Canestrari

2015

Road Materials and Pavement Design

View full text Add to dashboard Cite

The magnitude of the binder re-activation within the reclaimed asphalt pavement (RAP) fraction is a major concern when recycled hot-mix asphalt (HMA) is produced, since it directly affects the final performance of the mix. Currently, no reliable methods to predict the RAP binder re-activation are available and the lack of such information prevents the quantification of the proper amount of virgin binder to be added to the recycled HMA.This study proposes a new method to estimate the re-activated binder amount based on the surface area (SA) of RAP aggregates. Laboratory results demonstrated the effectiveness of the SA approach in the case of RAP amounts typically used for hot-recycled HMA. Moreover, the experimental investigation suggested that revised coefficients are needed for the evaluation of the SA to account for the presence of clumps when high amounts of fine RAP aggregates are used.

show abstract

“…In recent years, many researchers have investigated ageing behavior based on macro-and microperformance by simulating long-term ageing in laboratory [10]. Optimum contents and effects of rejuvenators on performance-based properties of recycled asphalt binders have been studied [11][12][13]. Analysis of binders' ageing rate shows that selecting the proper rejuvenator can extend the binders' service life up to 10 years more than that softened by a less effective rejuvenator [14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Asphalt Binders Ageing Behavior and Rejuvenating Feasibility in Multicycle Repeated Ageing and Recycling

Nie

Sun

et al. 2018

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Multicycle repeated utilization of reclaimed asphalt pavement (RAP) is a quite recent development of sustainable pavement materials technology. To investigate ageing rules and recycling possibility of asphalt binders in repeatedly used asphalt mixture, virgin asphalt AH-70 samples were heated by the rolling thin film oven test (RTFOT) at 163°C, respectively, for 40, 85, 180, 240, and 300 minutes to simulate different ageing degrees, and then the aged ones were rejuvenated by adding a self-made rejuvenator.is ageing and recycling process was repeated altogether for 5 cycles to simulate repeated use of RAP binders. In repeated recycling, rejuvenator contents for different cycle numbers or ageing durations were not the same, and the optimum ones were initially estimated by an empirical formula and finally obtained by comparative tests. Empirical rheological tests and the infrared spectral (IR) analysis were done before and after each cycle of recycling. Results indicate that for impact on deterioration of asphalt binders, ageing time is more important than cycle number. Meanwhile, the asphalt after multicycle repeated ageing and recycling can be restored to the empirical rheological indices level of the virgin asphalt and meet specifications requirements.

show abstract

Development of blending chart for different degrees of blending of RAP binder and virgin binder

Cited by 52 publications

References 1 publication

Road route planning for transporting wind turbines in Europe

Road route planning for transporting wind turbines in Europe

New method to estimate the “re-activated” binder amount in recycled hot-mix asphalt

Experimental Investigation on Asphalt Binders Ageing Behavior and Rejuvenating Feasibility in Multicycle Repeated Ageing and Recycling

Contact Info

Product

Resources

About