Optimizing the mix design of cold bitumen emulsion mixtures using response surface methodology

Nassar, Ahmed I.; Thom, Nick; Parry, Tony

doi:10.1016/j.conbuildmat.2015.12.073

Cited by 96 publications

(23 citation statements)

References 30 publications

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“…A performance-based mix design approach was adopted to optimize the mix proportions for CAEM using a statistical technique described in a previous research work [24]. According to this procedure, pre-wetting water and optimum bitumen emulsion contents were 2.12% and 6.75% of total weight of aggregate, respectively.…”

Section: (B) (C) (D) (E) (A)mentioning

confidence: 99%

Mechanical, durability and microstructure properties of Cold Asphalt Emulsion Mixtures with different types of filler

Nassar

Mohammed

Thom

et al. 2016

Construction and Building Materials

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102

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractThe primary aim of this study is to investigate the enhancement of Cold Asphalt Emulsion Mixtures (CAEMs) using binary and ternary blended fillers (BBF and TBF), including an indepth assessment of the microstructure. Ordinary Portland cement (OPC), fly ash (FA) and ground granulated blast furnace slag (GGBS) were used for the BBF while silica fume (SF) was added to the BBF to obtain TBF. The mechanical and durability results indicated that the TBF was more suitable than the BBF for the production of CAEMs. The microstructural assessment indicated that the effect of BBF on the internal microstructure of CAEMs was slightly negative and more noticeable in CAEMs containing FA. It is proposed that the addition of SF to BBF mixtures can eliminate the delay in formation of hydration products caused by the bitumen emulsion. Overall, the research suggests that the use of BBF-CAEMs might be appropriate for pavements in cold climate whereas TBF-CAEMs would be effective in road pavements exposed to severe conditions both in hot and cold climates.

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Section: (B) (C) (D) (E) (A)mentioning

confidence: 99%

Mechanical, durability and microstructure properties of Cold Asphalt Emulsion Mixtures with different types of filler

Nassar

Mohammed

Thom

et al. 2016

Construction and Building Materials

Self Cite

102

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“…As the asphalt to aggregate ratio increases, the air voids of the PAM decreases. This is because, as the amount of asphalt increases, there is more free asphalt in addition to the structural asphalt wrapped on the aggregate surface, and these asphalt fill the voids in PAM, thereby reducing the air voids [30,31]. It can be seen in Figure 5a,c that as the rubber powder content increases, the air voids increase first, and then decrease.…”

Section: Analysis Of Air Voids (Va)mentioning

confidence: 95%

A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber

et al. 2019

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In this paper, the performance of environmentally friendly porous asphalt mixture was optimized by the response surface method. Taking the asphalt-aggregate ratio, crumb-rubber content, and basalt fiber content as the independent variables, the air void, Marshall stability, flow value, Marshall quotient, and Cantabro particle loss are the response values. The best model was determined by fitting the experimental data. After the influence of the independent variables on the response values was clarified, the models were used to optimize the dosage of the asphalt, crumb rubber, and basalt fiber through comprehensive analysis. The results showed that the application of the response surface method can complete the establishment of the models and the optimization of the performance of the porous asphalt mixture with sufficient accuracy. The optimum dosage of the asphalt to aggregate ratio, crumb rubber, and basalt fiber is 4.51%, 11.21%, and 0.42%, respectively. The high-temperature stability, low-temperature crack resistance, water stability, and Cantabro particle loss resistance of the optimized porous asphalt mixture were effectively improved, which provides a reference for the construction of eco-friendly pavement.Sustainability 2019, 11, 5754 2 of 21 worth mentioning that there have been many studies showing that crumb rubber can improve the performance of PAM more comprehensively. Specifically, Jiao et al. [14] researched the failure mode of SBS (styrene-butadiene-styrene)-modified PAM and SBS-crumb-rubber modified PAM by compression and splitting experiments, the results showed that PAM modified by crumb rubber has a more uniform structure and more stable performance. Xie et al. [15] studied the pavement performance of crumb rubber-modified PAM in a long-term operation stage and the results showed that the pavement still showed good anti-rutting performance after five years of operation. Sangiorgi et al. [16] conducted a comprehensive evaluation of the performance of a crumb rubber-modified asphalt mixture. The results showed that although the application of rubber powder reduces the permeability of PAM, it increases the adhesion between the binder and aggregate and decreases the Cantabro particle loss of the mixture. At the same time, the rubber powder-modified asphalt mixture improves its low-temperature crack resistance. The above studies have proved the beneficial effect of crumb rubber on PAM. However, the considerations are relatively simple, and it is impossible to combine various factors to determine the optimum amount of crumb rubber.Fiber-based modifiers have been extensively studied in PAMs [17,18]. It is worth mentioning that basalt fiber is gradually used in modified asphalt mixture due to its high strength, good corrosion resistance, and high-temperature resistance. Cheng et al. [19] determined that the optimum dosage of diatomite and basalt fiber in an asphalt mixture was 14% and 0.32%, respectively, through an orthogonal experimental design. It was found that basalt fiber significantly improves...

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“…For this study, Design Expert software version 9.0.2.0 was used to produce statistical analysis and experimental designs. Related literature [18]- [19], as well as preliminary studies, were used to select the independent variables as well as their respective experimental ranges.…”

Section: Methods Of Analysismentioning

confidence: 99%

Application of Response Surface Methodology for Mix Design Optimization of Nanocomposite Modified Asphalt Mixtures

Bala¹

2017

GEOMATE

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ABSTRACT:Recently the application of polymer nanocomposite has been increasingly recognized as an alternative to polymer modified binders for durable asphalt mixtures. In this study, the optimization of nanosilica and binder content for nanocomposite modified asphalt mixtures has been examined to obtain optimum quantities for higher volumetric properties. Response Surface Methodology (RSM) based on face centered central composite design (FCCCD) was utilized. Interaction effects of independent variables nanosilica and binder content on nanocomposite volumetric properties namely stability, flow, void in total mix (VTM) and voids in mineral aggregate (VMA) were evaluated. The result indicates that the individual effects of nanosilica and binder content are both important; however, the asphalt binder content had more significance on the volumetric properties. Higher Stability was achieved with the mixtures prepared with 2% nanosilica and binder content range of 5 -6%. Also, the mean error obtained in all the responses from optimization results are all less than 5%, this indicates that predicted values are in agreement with experimental results. Furthermore, it was concluded that asphalt mixture design with high performance properties, optimization using RSM is a very effective approach.

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Optimizing the mix design of cold bitumen emulsion mixtures using response surface methodology

Cited by 96 publications

References 30 publications

Mechanical, durability and microstructure properties of Cold Asphalt Emulsion Mixtures with different types of filler

Mechanical, durability and microstructure properties of Cold Asphalt Emulsion Mixtures with different types of filler

A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber

Application of Response Surface Methodology for Mix Design Optimization of Nanocomposite Modified Asphalt Mixtures

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