Mechanistic approach for polypropylene-modified flexible pavements

Al-Hadidy, A. I.; Tan, Yiqiu

doi:10.1016/j.matdes.2008.06.021

Cited by 133 publications

(38 citation statements)

References 5 publications

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“…Polypropylene modification also resulted in a saving of 30% in the amount of bitumen, resulting in considerable cost savings 19 . There are also a number of other studies in the literature on different applications of polypropylene fiber modification of asphalt concrete in the last decade which deserve attention [25][26][27][28][29][30][31][32][33] .…”

Section: Available Literature Published In the Last Four Years On Thementioning

confidence: 99%

Utilising neural networks and closed form solutions to determine static creep behaviour and optimal polypropylene amount in bituminous mixtures

2012

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The testing procedure in order to determine the precise mechanical testing results in Marshall design is very time consuming. Also, the physical properties of the asphalt samples are obtained by further calculations. Therefore if the researchers can obtain the stability and flow values of a standard mixture with the help of mechanical testing, the rest of the calculations will just be mathematical manipulations. Determination of mechanical testing parameters such as strain accumulation, creep stiffness, stability, flow and Marshall Quotient of dense bituminous mixtures by utilising artificial neural networks is important in the sense that, cumbersome testing procedures can be avoided with the help of the closed form solutions provided in this study. Marshall specimens, prepared by utilising polypropylene fibers, were tested by universal testing machine carrying out static creep tests to investigate the rutting potential of these mixtures. On the very well trained data basis, artificial neural network analyses were carried out to propose five separate models for mechanical testing properties. The explicit formulation of these five main mechanical testing properties by closed form solutions are presented for further use for researches.

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Section: Available Literature Published In the Last Four Years On Thementioning

confidence: 99%

Utilising neural networks and closed form solutions to determine static creep behaviour and optimal polypropylene amount in bituminous mixtures

2012

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“…The polymeric materials used as modifiers of AC can be divided into two categories, elastomers and plastomers. Elastomer modifiers of asphalt extend both low and the high service temperatures, whilst plastomers are known as efficient modifiers at high service temperatures [20][21][22]. Plastomers increase the viscosity and stiffness of bitumen by forming rigid network structures resisting deformation, while elastomers improve the elastic behavior of bitumen since they resist permanent deformation under tensile forces and recover their original shape after loading [23,24].…”

Section: Introductionmentioning

confidence: 99%

Physical and rheological properties of acrylate–styrene–acrylonitrile modified asphalt cement

Ali‬

Ismail

Yusoff

et al. 2015

Construction and Building Materials

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“…The fibers were premixed with bitumen using a standard mixer at 500 revolutions per minute for two hours. The mixing temperature was around 165-170 °C [68] . For the sake of testing reasons, the reference bitumen samples were also subjected to the same temperature to equalise the oxidation and aging effects of two hours of heat effect utilised in polypropylene modification.…”

Section: Materials Propertiesmentioning

confidence: 99%

Rutting analysis of 100 mm diameter polypropylene modified asphalt specimens using gyratory and Marshall compactors

Tapkın

Keskín

2013

Mat. Res.

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Compaction technique used in Marshall design does not model the process of actual rolling procedures on site exactly. Carrying out laboratory compaction of dense bituminous mixtures with Superpave gyratory compactors is a more realistic way of simulating actual compaction. In this study, mechanical differences of reference and polypropylene modified asphalt mixtures were compared using Superpave gyratory and Marshall compaction methods by carrying out repeated creep tests utilising universal testing machine. In addition, there is no standard Superpave design procedure for 100 mm diameter samples till date. The other purpose of this study is to propose new standards for the compaction and testing procedures of these 100 mm specimens. Indeed, extensive studies have shown that the design gyration number should be 40 for reference and 33 for polypropylene modified specimens under medium traffic conditions for the similar and specific type of aggregate sources, bitumen, aggregate gradation, mix proportioning, modification technique and laboratory conditions. Moreover, it was shown that, the asphalt samples produced by Superpave gyratory compactor were much resistant to destructive rutting effects than the asphalt specimens prepared by Marshall design.

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Mechanistic approach for polypropylene-modified flexible pavements

Cited by 133 publications

References 5 publications

Utilising neural networks and closed form solutions to determine static creep behaviour and optimal polypropylene amount in bituminous mixtures

Utilising neural networks and closed form solutions to determine static creep behaviour and optimal polypropylene amount in bituminous mixtures

Physical and rheological properties of acrylate–styrene–acrylonitrile modified asphalt cement

Rutting analysis of 100 mm diameter polypropylene modified asphalt specimens using gyratory and Marshall compactors

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