Low-Temperature Fracture Toughness Study for Hot Mix Asphalt and Warm Mix Asphalt Under Pure Mode I and II Loading Condition

Akhtari, Mohammad Reza Pour Ebrahim; Kordani, Ali Abdi; Zarei, Mohammad

doi:10.1007/s42947-021-00024-2

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…In this part, costs and benefits from adding Nano carbon black were calculated. In this method, a 6lane road (3 lanes in each direction) with a length of 1 km (Zarei et al, 2022;Zahedi et al, 2020b;Rassafi et al, 2021;Zarei et al, 2021c) was evaluated. It should be noted that the unit weight of asphalt mixture is approximately ɣ = 2.3 ton m 3 .…”

Section: Economic Analysismentioning

confidence: 99%

“…Nano carbon black is one of the nanomaterial that has recently been considered in the pavement industry. In addition to improving the mentioned features, using these materials in the pavement industry is suitable when it is economically viable (Cong and Chen, 2014;Abdi et al, 2020;Akhtari et al, 2022;Zahedi et al, 2020;Zarei and Zahedi 2016;Ahmad et al, 2018;ASTM D1559, 1997. Therefore, the lack of a study examining the effect of these materials on asphalt pavement encouraged the authors to evaluate the economic impact of this additive on asphalt pavement.…”

Section: Introductionmentioning

confidence: 99%

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Technical-economic studies about the effect of Nano-carbon black on asphalt mixtures

Zarei

Naseri

Salehikalam³

et al. 2022

EJSE

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Nanomaterial have been considered as one of the new additives by researchers for use in asphalt pavement. In this study, economic analysis along with technical analysis of the effect of different percentages of Nano carbon black on a 1 km long road was evaluated. The results showed that the addition of Nano carbon black to the asphalt mixture in low percentages reduced the Marshall stability due to the lack of proper bonding between bitumen and Nano carbon black. By increasing the percentage of Nano carbon black in the asphalt mix, Marshall Stability increased. Also, Nano carbon black has clearly shown potential for improving the permanent deformation resistance of the modified asphalt mixture. During the Marshall Quotient test, more than two times increase in rutting resistance has been observed by adding more than 10% Nano carbon black to the asphalt mixture. On the other hand, the results of economic analysis showed that the project has become uneconomic in different percentages; however, due to the positive effect of adding Nano carbon black on the technical properties of asphalt mixtures, it is recommended that Nano carbon black be used sparingly in areas where the pavement suffers from a lack of load-bearing capacity.

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Section: Economic Analysismentioning

confidence: 99%