Performance Comparison of Laboratory-Produced Short-Term Aged Mixtures with Plant-Produced Mixtures

Sadek, Husam; Rahaman, Mohammed Ziaur; Lemke, Zachary; Bahia, Hussain U.; Reichelt, Signe; Swiertz, Daniel

doi:10.1061/(asce)mt.1943-5533.0002980

Cited by 3 publications

(3 citation statements)

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“…To date, several studies have been conducted that demonstrate the effects of aging by varying the asphalt's mixture characteristics. Among others, the binder's performance grade, the binder's content, the aggregates, the filler, and the duration of mixing and construction have been examined for their influence in the pavement's quality [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…The first phase, known as short-term aging (STA), takes place during production, up to the laying and compaction stage. There is well-known evidence that the considerably high temperatures for a relatively short period in this phase mainly provoke mechanisms such as volatilization and oxidation [2,5,10]. Successively, during service life, long-term aging (LTA) is the governing coupled reaction-diffusion process that affects the pavement's performance [9].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, understanding the potentially detrimental effects of aging on volumetric properties is of utmost importance. Following Sadek et al (2020), an equivalent level of volumetric properties of plant-produced mixtures can be captured using corresponding lab-produced mixtures [5].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Short-Term Aging on the Compactibility and Volumetric Properties of Asphalt Mixtures Using the Response Surface Method

et al. 2020

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Several factors affect asphalt binder and mixture characteristics. This makes pavement performance assessment a mounting task. This paper evaluates the effects of short-term aging on compactibility and volumetric properties of asphalt mixtures using the Response Surface Method (RSM). Three different binders were utilized to produce mixtures (type AC-14). Aging temperature, aging duration, and duration in a climate chamber with increased humidity and ultraviolet lighting were considered as independent variables (IV), while compactibility and volumetric properties were regarded as dependent variables (DV). The findings revealed significant impacts of aging temperature and duration on compactibility, air voids, voids in mineral aggregate, and voids filled with asphalt, while duration in the climate chamber exhibited no significant influence on the DVs. The effects of IVs on DVs varied by binder type. This was achieved through an elaborate statistical analysis. The study, finally, demonstrates the RSM’s potential to predict changes in responses from mathematical equations—converging with the experimental observation—with excellent accuracy. Potentially, pavement contractors can use this method by replacing haulage duration and mixtures’ temperatures during paving in the developed models. It enables them to predict the pavement density and adjust pressure as well as the number of roller passes to achieve the desired requirements.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%