Application of Hansen Solubility Parameters to Predict Compatibility of SBS-Modified Bitumen

Wang, Tao; Huang, Xiaosheng; Zhang, Yuzhen

doi:10.1061/(asce)mt.1943-5533.0000011

Cited by 19 publications

(16 citation statements)

References 6 publications

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“…However, as HSP values of bitumen depend on the bitumen nature, slight changes prevailed for instance either a Venezuelan bitumen or another bitumen is used [16,17]. Overall, the TPUs exhibit higher polarities than bitumen and than SBS [19,39] copolymers which are usually combined with bitumen. In order to precisely evaluate the bitumen compatibility with the TPUs, their solubility parameters were compared.…”

Section: Bitumen -Tpumentioning

confidence: 99%

“…These authors also showed that it was possible to properly understand the storage stability and morphology in bitumen-polymer systems by associating solubility theory to the free energy of the blends. Another study on SBS-modified bitumens reported that the compatibility could be predicted either from considering the overall solubility parameter or the dispersive component as SBS is a nonpolar polymer (δTOT=17.29 MPa 1/2 ), whereas poor affinity could be expected with highly polar bitumens [19]. The use of Hansen solubility parameters was also associated to turbidimetric titration to describe compatibility between aged and non-aged bituminous binders [20].…”

Section: Introductionmentioning

confidence: 99%

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Investigating compatibility between TPU and bitumen SARA fractions by means of Hansen solubility parameters and interfacial tension measurements

Gallu

Méchin

Dalmas

et al. 2021

Construction and Building Materials

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Section: Bitumen -Tpumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigating compatibility between TPU and bitumen SARA fractions by means of Hansen solubility parameters and interfacial tension measurements

Gallu

Méchin

Dalmas

et al. 2021

Construction and Building Materials

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“…Comprehensive analysis confirmed that the developmental time was 1h. Through the above investigation of the preparation process conditions of modified asphalt, and drawing lessons from the asphalt modification process proposed by other researchers [6][7][8][9][10]. The preparation process of modified asphalt is determined as follows: heating the base asphalt and maintaining its temperature at about 175℃.…”

Section: Development Timementioning

confidence: 99%

“…Based on the above considerations, the SBS modified emulsified asphalt suitable for climatic environment in alpine region was developed through a large number of experiments in this study [6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Preparation of SBS Modified Emulsified Asphalt in High Cold Region

Yan-ming

2019

MATEC Web Conf.

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A kind of SBS modified emulsified asphalt for highly cold area was studied by experiments. The research includes two aspects: the first is preparation of SBS modified asphalt. The influence of temperature, time, shear rate and development time on asphalt modification are determined, so as to determine the process of SBS modified asphalt. On this basis, the blending ratio of SBS modified emulsified asphalt was determined by experiments. The results show that the emulsified asphalt produced by the equipment is of good quality and good ductility.4%SBS latex content can make emulsified asphalt meet the standard requirements, but only 6%SBS latex content can obtain better road performance. Although the softening point of SBS modified emulsified asphalt prepared by this method is still low, it can meet the requirements of high cold area.

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“…us, changing the density difference between SBS and asphalt would improve the thermal storage stability. Wang et al indicated that adding aromatic oil would help obtain effective compatibility of asphalt and SBS because aromatic compounds in asphalt had a strong interaction with polybutadiene in SBS [8]. However, Sun and Lu studied and interpreted the different hot storage stabilities of three SBS modified asphalts with the interface layer principle; the results show that physical modification methods cannot work because SBS interphase still relied on van der Waals forces to form the physical network [9].…”

Section: Introductionmentioning

confidence: 99%

Identifying the Thermal Storage Stability of Polymer‐Modified Asphalt with Carbon Nanotubes Based on Its Macroperformance and Micromorphology

Liu

Wang

Lu³

et al. 2021

Advances in Materials Science and Engineering

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The thermal storage stability of polymer-modified asphalt (PMA) is the key to avoid performance attenuation during storage and transportation in pavement engineering. However, phase separation of PMA continuously occurs after long-term thermal storage due to the overlooked influence of the phase interface. Two kinds of carbon nanotubes (CNTs) and styrene-butadiene-styrene triblock copolymer (SBS) were selected in this paper to address the aforementioned issue. The segregation test was used to simulate the long-term storage process from 0 to 10 days. Macroperformance included the softening point difference (△SP), irrecoverable compliance (Jnr), recovery rate (R%), and complex modulus (G∗) measured by the softening point test, multistress creep recovery (MSCR) test, and small strain oscillatory rheological test. Microcharacteristics were obtained by the SBS characteristic peak index, SBS-rich phase distribution, polymer swelling degree, and particle characteristics of the SBS-rich phase. They were measured by Fourier-transformed infrared spectroscopy (FT-IR), fluorescence microscopy (FM), and atomic force microscopy (AFM), respectively. Results showed that the optimum CNT amount necessary to obtain an improved thermal storage stability of PMA was 0.5 wt.%. After 10 days of storage, the largest R% of SBS modified asphalt (SBSMA) decreased to 2.24% and the smallest Jnr increased to 0.069 1/kPa, while R% of SBSMA with CNTs was 62.15% and its Jnr was 0.013 1/kPa. R% and Jnr of SBSMA with CNTs showed almost no change after 6 days of storage, implying an effective antirutting performance. The results from the microperformance investigation showed that phase separation of SBS mainly occurred on day 4, while SBS degradation and base asphalt aging led to the worse macroperformance after 10 days of storage. Additional CNTs restrained the SBS-rich phase from floating upward. Meanwhile, a small size of polymer-rich phase and dense network of SBSMA with CNTs were observed in fluorescence microscopy and atomic force microscopy images, thereby exhibiting improved thermal storage stability. Adding CNTs would retard the segregation due to CNT entanglement with SBS.

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Application of Hansen Solubility Parameters to Predict Compatibility of SBS-Modified Bitumen

Cited by 19 publications

References 6 publications

Investigating compatibility between TPU and bitumen SARA fractions by means of Hansen solubility parameters and interfacial tension measurements

Investigating compatibility between TPU and bitumen SARA fractions by means of Hansen solubility parameters and interfacial tension measurements

Preparation of SBS Modified Emulsified Asphalt in High Cold Region

Identifying the Thermal Storage Stability of Polymer‐Modified Asphalt with Carbon Nanotubes Based on Its Macroperformance and Micromorphology

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