Effects of reclaimed asphalt pavement content and virgin binder grade on properties of plant produced mixtures

McDaniel, Rebecca S; Shah, Ayesha; Huber, Gerald; Copeland, Audrey

doi:10.1080/14680629.2012.657066

Cited by 52 publications

(23 citation statements)

References 2 publications

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“…The Indiana DOT performed two studies prior to setting new RAP binder selection grades (Beeson et al 2011;McDaniel et al 2012). In the first numerous stockpiles of RAP were sampled and the asphalt binder was recovered to inventory grades of asphalt binder.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a 100 % Rap Recycling Project in Fort Wayne, Indiana

Rowe¹,

Barry

Crawford

2015

RILEM Bookseries

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A project site investigation involving a high RAP (close to 100 %) recycling has been evaluated to determine the performance differences with a control section, located in Fort Wayne, Indiana, one year after construction. The analysis involved cutting cores from the surface and determining recovered binder properties and mixture physical properties. Binder properties included standard PG grading in accordance with AASHTO M320 and the development of full master curves over the range of temperatures −30 to +80°C. From the master curve analysis was conducted to look at parameters such as cross-over frequency, rheology index and viscos-elastic transition temperature. The data from this testing has been used in a manner to judge the effectiveness of a recycling oil, particularly when inspecting the relationship between cross-over frequency and rheological index. Mixture testing included evaluation of strength properties by conducting tests in bending beam rheometers and the development of mixture master curves. At the current time little difference is seen in the performance of the 100 % RAP section compared to the control section, which provides significant support for continuing the effort to develop technologies for high percentage RAP recycling projects.

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Section: Introductionmentioning

confidence: 99%

Evaluation of a 100 % Rap Recycling Project in Fort Wayne, Indiana

Rowe¹,

Barry

Crawford

2015

RILEM Bookseries

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“…The blends' compositions were determined by calculating the percentage that would be present in 50% RA mixtures with a 5% total binder content and assuming full blending (all RA binder in the mixture would activate and blend with the fresh binders). This blending assumption was made taking into account previous studies which showed that when high RA amounts are added to a new mix, high blending between fresh and RA binders may occur (McDaniel et al, 2012;Shirodkar et al, 2011;Soleymani et al, 2000). Nevertheless, the actual blending percentage remained unknown at this point of the investigation and the blends produced could be the different than the final binder present in the mixture.…”

Section: Bindersmentioning

confidence: 99%

Linear viscoelastic properties of high reclaimed asphalt content mixes with biobinders

Carrión

Presti

Pouget

et al. 2017

Road Materials and Pavement Design

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The use of high Reclaimed Asphalt (RA) content mixtures together with binders produced from renewable resources (biobinders) is one of the current challenges in pavement engineering research. On one hand, RA has been used for decades but there are still some concerns about its performance, especially when high contents are used (>30%). On the other hand, biobinders are relatively new materials which have to be deeply characterised and studied in order to develop good-practices for their use. In this paper, linear viscoelastic properties of biobinders and bio-mixtures manufactured with high-RA content and biobinders are analysed and discussed.High-modulus mixtures with 50% RA were selected for the mix design. Binders and mixtures were tested over a wide range of asphalt service temperatures and frequencies by means of DSR and two-point bending tests respectively. Results show that biobinders have an important effect on mixtures behaviour. However, no direct links between their linear viscoelastic properties were found. Bio-asphalt mixtures still need further development for commercial exploitation; however the take-away fact of this investigation is that it is possible to manufacture asphalt-like mixtures with acceptable viscoelastic properties while being composed only of RA and non-petroleum based binders.

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“…recent researches have argued that for high RA contents (>20%) high blending rates take place 127 (Soleymani et al, 2000;Shirodkar et al 2011;McDaniel et al 2012). 128…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%