Evaluation and optimization of the engineering properties of polymer-modified asphalt

Chen, J. S.; Liao, Min Chih; Tsai, Huan‐Liang

doi:10.1007/bf02719194

Cited by 66 publications

(16 citation statements)

References 16 publications

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“…The presence of semi-crystalline EVA (different crystalline structures at different temperatures) and elastomeric SBS (enhanced high temperature and/or low frequency elastic response due to the polymer network) may attribute to the difference in the coefficient values. Previous findings suggested the critical network forms around 5% of modification and this may lead to the suggestions that the partial breakdown of a polymer network occurs in the PMB [Chen et al, 2002]. Moreover, the presence of "waves" …”

Section: The Sigmoidal Modelmentioning

confidence: 95%

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Modelling the linear viscoelastic rheological properties of bituminous binders

Yusoff

Shaw

Airey

2011

Construction and Building Materials

181

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Rheology involves the study and evaluation of the flow and permanent deformation of time-and temperature-dependent materials, such as bitumen, that are stressed through the application of a force. The fundamental rheological properties of bituminous materials including bitumen are normally measured using a dynamic shear rheometer (DSR), from low to high temperatures. DSR is a powerful tool to measure elastic, viscoelastic and viscous properties of binders over a wide range of temperatures and frequencies, provided the tests are conducted in the linear viscoelastic region. Therefore, the study of bitumen rheology is crucial since its reflects the overall performance of a flexible pavement. However, it is well known that the DSR also has limitations, where the measurements are exposed to compliance (testing) errors particularly at low temperatures and/or high frequencies.In addition, conducting laboratory tests are known to be laborious, time consuming and require skilled personnel. Therefore, this research is conducted to elucidate a better understanding of the rheological properties and modelling procedures of bitumens and bituminous binders.Various materials such as unmodified bitumens, polymer-modified bitumens (PMBs) and bitumen-filler mastics, unaged and aged samples, are used in this study.An extensive literature review was undertaken to identify reliable models that can be considered as a valuable alternative tool to describe or fit the rheological properties of bitumen. These properties are commonly presented in terms of complex modulus and phase angle master curves, together with the determination of shift factor values at a particular reference temperature. In general, the complex modulus and phase angle master curves can be modelled using different techniques; nomographs, mathematical equations and mechanical models. However, the nomographs have become obsolete in recent years and tended to be replaced by the two latter models.Those models are able to satisfactorily describe the rheological properties of unmodified bitumen. However, the observations suggest a lack of agreement between measured and predicted rheological properties for binders that contain a ii phase transition, such as found for highly crystalline bitumen, structured bitumen with high asphaltenes content and highly modified bitumen. An attempt was made to evaluate the validity of several mathematical equations and mechanical element approach using unaged and aged unmodified bitumens and PMBs database. I also owe a profound debt to those whose collective ideas and experiences have contributed greatly for writing the thesis: Prof. Emeritus Montgomery T. Shaw

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Section: The Sigmoidal Modelmentioning

confidence: 95%

“…Once the critical networks begin to form, no significant property increase can be observed, even though the polymer content is elevated [Chen et al, 2002]. The use of more than 8% of SBS concentration is generally impractical in road construction [Wojciech and Mieczyslaw, 1996].…”

Section: Elastomermentioning

confidence: 99%

Modelling the linear viscoelastic rheological properties of bituminous binders

Yusoff

Shaw

Airey

2011

Construction and Building Materials

181

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“…Przeprowadzono wiele badań dotyczących oceny wpływu dodatku miału gumowego na właściwości mieszanek mineralno-asfaltowych modyfi kowanych gumą, zarówno metodą "na sucho", jak i metodą "na mokro". Badania potwierdzają korzystny wpływ granulatu gumowego na takie właściwości MMA (mieszanek mineralno-asfaltowych), jak: zwiększenie modułu sztywności [3], zwiększenie trwałości zmęczeniowej [4,10]; zwiększenie odporności na koleinowanie [5,10,11,14]. Dodatek gumy do lepiszcza asfaltowego (metoda na mokro) wpływa na: zwiększenie lepkości [7,12,15], zwiększenie przyczepności do kruszywa [7,8], zmniejszenie penetracji [7,13], zwiększenie temperatury mięknienia [7,11,12,13,16] czy zmniejszenie wrażliwości temperaturowej [5,7,13,14].…”

Section: Wprowadzenieunclassified

Investigation of impact of a crumb rubbergranulate addition on the asphalt mixtures resistanceto water and frost

et al. 2019

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The article presents the results of the tests of hot mix asphalt (HMA) modi-fi ed with the addition of crumb rubber granulate using the dry method. This modifi cation consisted in the applying of rubber granules into the aggregate mixture, replacing a 0/2 mm fraction of the basalt aggregate. The tests were carried out for the Asphalt Concrete to be used in binder course of a road pavement (AC16W 50/70). There were 5 types of HMA analyzed: without the addition of rubber granules as well as with 1% or 2% (in relation to the weight of the aggregate mix) of activated with a grain size up to 2 mm and non-activated rubber granules with the same grain size. The activation process was carried out using an electro-magnetic mill with a microwave generator, centrifugal rotor mill with supersonic speed and auxiliary equipment. For each analyzed mixture type, density, bulk density, air voids and resistance to water and frost were determined. On the basis of the research, it was observed that the addition of crumb rubber granules to HMA adversely affects the air voids content causing its increase. The addition of crumb rubber granulate also affects the resistance of HMA to water and frost, but the quantitative changes depend on the amount of added crumb rubber granulate.

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“…According to the results of studies, these polymers led to some improvements in the properties of bitumen, such as higher stiffness at high temperatures, increased resistance to fracture at low temperatures, improved moisture resistance, and longer service life [2,4,17,[20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Polymer Bitumen Binder in the Presence of a Stabilizer

et al. 2021

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The article presents the results of research on the production of polymer-bitumen binder (PBB) based on mixtures of non-oxidized and oxidized petroleum products, namely high-viscosity tar, darkened vacuum distillate, and oxidized petroleum bitumen 70/100, obtained at technological installations of Limited Liability Partnership (LLP) “JV Caspi Bitum’’ and styrene-butadiene-styrene (SBS) block copolymer brand L 30-01A modifier in the presence of a stabilizer. The results obtained show that the introduction of the SBS modifier in the presence of a sulfur stabilizer improves the performance characteristics of PBB, such as elasticity, ductility, softening temperature, penetration, and brittleness temperature.

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Evaluation and optimization of the engineering properties of polymer-modified asphalt

Cited by 66 publications

References 16 publications

Modelling the linear viscoelastic rheological properties of bituminous binders

Modelling the linear viscoelastic rheological properties of bituminous binders

Investigation of impact of a crumb rubbergranulate addition on the asphalt mixtures resistanceto water and frost

Preparation of Polymer Bitumen Binder in the Presence of a Stabilizer

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