Novel Methodology to Investigate and Obtain a Complete Blend between RAP and Virgin Materials

The Influence of Using Sustainable Materials on Paving Cost of AL-Kut-Maysan Highway Using Cost-Benefit Analysis

“…used an advanced technique, Nano-indentation to investigate the level of blending between https://doi.org/10.17993/3cemp.2023.120151.463-478 RAP and virgin materials for a mixture incorporating some warm additives such as; Sasobit, Rediset WMX and Rediset LQ and concluded that RAP cannot be considered as black rocks even with the inclusion RAP materials up to 40%. Furthermore, a novel protocol was reported to find a complete blend between RAP and virgin materials [8]…”

Quantitative assessment of the parameters linked to the blending between reclaimed asphalt binder and recycling agent: A literature review

“…Abd et al [20] used specially prepared cylindrical specimens of a gap-graded hot rolled asphalt mixture containing 40% RA for testing in modified DSR equipment to estimate DoB. Even though it was not quantified, the results showed that there was no complete blending between RAb and VB, except in the case when a lubricant was used at higher mixing temperatures.…”

“…The interface between two binders was not clearly identified and it was not possible to measure DoAv, although the binder film thickness between stones could be precisely measured. Abd et al [20] used a nanoindentation technique to determine DoV, concluding that the effect of the aggregate type on DoB can be neglected by using this technique, because measured mechanical properties of RA aggregate were almost the same as properties of the virgin aggregate. Obtained results confirmed the results from the same study obtained by binder testing: there was no complete blending between RAb and VB, except in the case when a lubricant was used.…”

“…The quantity of activated/available RA binder (RAb) and the degree of blending between RAb and recycling agent (DoB) have been interchangeably used in previous studies due to the lack of a general consensus on these terms. The first term was, at times, identified as effective RAb [11], replaced VB [12,13], transferred binder [14], mobilized binder [15][16][17][18] or re-activated binder [19], whereas the second term was identified most often as DoB [20][21][22][23][24][25][26][27], but also as blending efficiency [28][29][30], blending status [31], blending ratio [32], rate of intermixing [33] or mesoblending [34]. In order to overcome this issue, Lo Presti et al [35] provided a nomenclature and a theoretical framework of the blending phenomena.…”