Evaluation of asphalt mixture behavior incorporating warm mix additives and reclaimed asphalt pavement

Omranian, Seyed Reza; Hamzah, Meor Othman; Gungat, Lillian; Teh, Su Yean

doi:10.1016/j.jtte.2017.08.003

Cited by 17 publications

(4 citation statements)

References 24 publications

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“…However, aging duration exhibits the opposite impacts on the corresponding values, where increasing the aging duration increases CEI, V a , and VMA, while VFA is decreased. These results are in agreement with the findings outlined by [32]. In the case of mixtures produced with binder B80, the aging duration trend exhibits similar effects on the CEI, V a , VMA, and VFA, while the aging temperature only affects CEI and has no influence on other responses.…”

Section: Resultssupporting

confidence: 92%

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: Resultssupporting

confidence: 92%

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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“…The effectiveness of higher aging temperature can be correlated to the existence of lighter oily fraction volume in the binders, which accelerates the volatilization as clearly was detected by RSM. These results are in line with the results outlined by [22]. The RSM great capability to estimate the CEI with respect to the IVs can be also understood from the even or normal distribution of residuals along the fitting lines as shown in Figure 3.…”

Section: Tablesupporting

confidence: 90%

Application of Response Surface Method for Analyzing Pavement Performance

Omranian¹

2021

Response Surface Methodology in Engineering Science

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Hot mix asphalt (HMA) is a common material that has been largely used in the road construction industries. The main constituents of HMA are asphalt binder, mineral aggregate, and filler. The asphalt binder bounds aggregate and filler particles together and also waterproofs the mixture. The aggregate acts as a stone skeleton to impart strength and toughness to the structure, while the filler fills pores in the mixture which can improve adhesion and cohesion as well as moisture resistance. The HMA behavior depends on individual component properties and their combined reaction in the mixture. Asphalt binder properties change due to different factors. Over the years, asphalt pavement materials age, causing binder embrittlement which adversely affects pavement service life. Response Surface Method (RSM) is a set of techniques that are used to develop a series of experiment designs, determining relationships between experimental factors and responses, and using these relationships to determine the optimum conditions. Incorporating RSM in pavement technologies can beneficially help researchers to develop a better experimental matrix and give them the opportunity to analyze the changes in pavement performance in a faster, more effective, and reliable way.

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“…Various types of aggregates, such as slag aggregates, have been used in hot asphalt mixtures, for example, to help with environmental issues (Fallah Tafti, et al 2017). It has been demonstrated that increasing the RAP content in an asphalt mix has a significant impact on the viscoelastic properties of the blend of the binder recovered from the RAP and the virgin bitumen (Omranian, et al,2018) .…”

Section: Introductionmentioning

confidence: 99%

Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method

Khabiri,

Saboohi

2023

Slovak Journal of Civil Engineering

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In recent years, the use of materials derived from recycled asphalt has attracted the attention of airfield and highway construction researchers. Since the making of these products is economically cost-effective, one idea about how to use them is to use coarse-grained crumbs from recycled Asphalt Pavement (RAP), which are agglomerates that can be found in coarse RAP, as a replacement for virgin asphalt.The goal of the current study is to investigate the performance of hot mix asphalt created with various percents of RAP. The punching shear strength of cylindrical specimens versus the penetration of steel rods with fixed and determined diameters into an asphalt specimen is one of the tests used to study the shear strength of asphalt. Other typical tests include a test of the structural strength and resilient modulus with two rectangular and sinusoidal loading shapes, respectively, as well as the specimen's strength against different temperatures of asphalt mixtures containing 10, 20, and 30% coarse-grained RAP. The results show that the resilient strength of the samples with a maximum 30% coarse-grained RAP is within reasonable limits. Furthermore, the semi-sinusoidal loading has a higher resilience modulus than rectangular loading. It is also observed during uniaxial penetration testing (UPT) that increasing the RAP increases the penetration of the steel rod, thereby implying that the shear strength of the asphalt has decreased.

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Evaluation of asphalt mixture behavior incorporating warm mix additives and reclaimed asphalt pavement

Cited by 17 publications

References 24 publications

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

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

Application of Response Surface Method for Analyzing Pavement Performance

Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method

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