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Multi-performance Evaluation of Recycled Warm-mix Asphalt Mixtures with High Reclaimed Asphalt Pavement Contents by Weiying Wang; Huailei Cheng; Lijun Sun; Yiren Sun; Ning Liu is a Environmental Science article available to read on EtoBox.

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The recycled warm-mix asphalt (RWMA) technique is advanced in increasing the reclaimed asphalt pavement (RAP) content of the recycled mixture and mitigating the secondary aging of the RAP binder. However, the effects of this technique on the mixture performance need to be further investigated, as existing findings tend to be inconsistent and may bias the RWMA's engineering application. In this research, multi performances (moisture susceptibility, low-temperature, high-temperature, fatigue) of RWMA mixtures prepared with various design components, i.e., RAP contents (50% and 70%), WMA additive (wax R and surfactant M) and gradation (AC-13 and AC-16), were assessed. It was found that increasing RAP content reduces the moisture damage resistance and low-temperature performance of RWMA mixtures, and these reductions can be compensated by using WMA additives. By contrast, the rutting resistance and fatigue performance of the RWMA mixture rise as the appropriate combination of WMA additive and RAP content is adopted. The analysis of variance (ANVOA) statistical analysis was conducted to quantitatively assess the impacts of different design components on RWMA performances. It was observe

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Author

Weiying Wang; Huailei Cheng; Lijun Sun; Yiren Sun; Ning Liu

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)