Effects of polyphosphoric acid (<scp>PPA</scp>), <scp>styrene‐butadiene‐styrene</scp> (<scp>SBS</scp>), or rock asphalt on the performance of desulfurized rubber modified asphalt

Liu, Hengbin; Zhang, Zhengqi; Li, Zhuolin; Li, Naiqiang

doi:10.1002/app.50621

Cited by 13 publications

(10 citation statements)

References 29 publications

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“…At a mass loss of 50%, the decomposition temperatures of SBSMA, RP/SBSMA, and TA‐TPC‐Rubber/SBSMA were 460, 456, and 458°C, respectively. These temperature values were quite similar; however, after the first decomposition stage, the remaining mass of TA‐TPC‐Rubber/SBSMA with the highest decomposition temperature is slightly higher than that of RP/SBSMA and greater than SBSMA, indicating that TA‐TPC‐Rubber can effectively improve the high‐temperature stability of SBSMA 40 . This may be due to the strong RP chain and ester bond formed by cross‐linking TA and TPC, which requires more heat for cleavage and hence TA‐TPC‐Rubber/SBSMA realized higher thermal stability 41,42 …”

Section: Resultsmentioning

confidence: 84%

“…The Superpave specification requires a viscosity of no more than 3 Pa·s at 135°C to facilitate storage and pumping during construction. However, it is difficult for the asphalt modified by RP to meet this requirement, 40 and higher temperature is needed to attain a viscosity of 3 Pa·s. Therefore, during the storage, mixing, and construction application, RP/SBSMA needs to be heated to a higher temperature 44 …”

Section: Resultsmentioning

confidence: 99%

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Synthesis of tannic acid‐terephthalyl chloride modified rubber powder for the fabrication of tannic acid‐terephthalyl chloride‐rubber/styrene‐butadiene‐styrene modified asphalt

Wang

Muhammad

Mao

et al. 2021

J of Applied Polymer Sci

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Herein, tannic acid‐terephthalyl chloride (TA‐TPC) was prepared and was applied for the preparation of TA‐TPC‐Rubber to composite styrene butadiene styrene (SBS)‐modified asphalt (SBSMA). Fourier transform infrared spectroscopy and scanning electron microscopy indicated that TA‐TPC successfully attached to the surface of rubber powder (RP), which improved the bonding between RP and SBSMA. Fluorescence microscopy analysis showed that TA‐TPC‐Rubber formed a complete crosslinking network structure in SBSMA, while thermogravimetry analysis proved the higher thermal stability of TA‐TPC‐Rubber/SBSMA. Dynamic shear rheometer and multi‐stress creep recovery tests confirmed that compared with SBSMA, the storage modulus (G') and loss modulus (G") of 12% TA‐TPC‐Rubber/SBSMA at 46°C were increased by 37.14% and 34.36%, respectively, the recovery rate was increased by 35.49% (0.1 kPa) and 31.91% (3.2 kPa) while the average creep compliance was decreased by 68.67% (0.1 kPa) and 59.87% (3.2 kPa). The phase segregation test proved that the compatibility between RP and SBSMA was improved by the modification of TA‐TPC, and the difference between the upper and lower softening points were reduced by 53.85%. The findings of this study can be of great significance for designing modified asphalt from cost‐effective raw materials through a convenient process for highways and construction applications.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Synthesis of tannic acid‐terephthalyl chloride modified rubber powder for the fabrication of tannic acid‐terephthalyl chloride‐rubber/styrene‐butadiene‐styrene modified asphalt

Wang

Muhammad

Mao

et al. 2021

J of Applied Polymer Sci

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“…NR has two main types: natural rubber latex (NRL) and a new type of NR known as cup lump natural rubber (CLNR) (Figure 1), which is produced when latex is allowed to coagulate under bacterial attack [12,13]. NRL polymer can be used as a modifier to enhance bitumen's physical qualities, such as increasing the softening point, reducing penetration while enhancing the penetration index, and improving the properties of shortand long-term ageing [3,14,15]. NRL also addresses the common problems of bitumen, such as fatigue, permanent deformation, fracture strength and thermal cracking resistance, helping improve the durability of bitumen pavement [5,16].…”

Section: Natural Rubber As a Bitumen Modifiermentioning

confidence: 99%

“…Latex-modified bitumen does not experience phase separation during hot-temperature storage due to improved viscoelastic capabilities. Morphological analysis revealed that the material has a homogeneous dispersed network [14,18]. such as fatigue, permanent deformation, fracture strength and thermal cracking resistance, helping improve the durability of bitumen pavement [5,16].…”

Section: Natural Rubber As a Bitumen Modifiermentioning

confidence: 99%

Potential Additives in Natural Rubber-Modified Bitumen: A Review

et al. 2023

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Conventional bitumen pavement is no longer suitable for handling increasing loads and weather variations, which cause road deterioration, Thus, the modification of bitumen has been suggested to counter this issue. This study provides a detailed assessment of various additives for modifying natural rubber-modified bitumen used in road construction. This work will focus on the use of additives with cup lump natural rubber (CLNR), which has recently started to gain attention among researchers, especially in rubber-producing countries such as Malaysia, Thailand and Indonesia. Furthermore, this paper aims to briefly review how the addition of additives or modifiers helps elevate the performance of bitumen by highlighting the significant properties of modified bitumen after the addition of modifiers. Moreover, the amount and method of application of each additive are discussed further to obtain the optimum value for future implementation. On the basis of past studies, this paper will review the utilisation of several types of additives, including polyphosphoric acid, Evotherm, mangosteen powder, trimethyl-quinoline and sulphur, and the application of xylene and toluene to ensure the homogeneity of the rubberised bitumen. Numerous studies were conducted to verify the performance of various types and compositions of additives, particularly in terms of physical and rheological properties. In general, additives enhance the properties of conventional bitumen. Future research should investigate CLNR because studies on its utilisation are limited.

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“…Natural rock asphalt refers to the asphalt that exists in rock crevices, which is often used as an additive and modifier for asphalt materials [ 1 , 2 , 3 , 4 , 5 ]. Buton Rock Asphalt (BRA) is a kind of rock asphalt that originates from Buton Island, Sulawesi province, Indonesia [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Physical Properties and Storage Stability of Buton Rock Asphalt Modified Asphalt

Wan

et al. 2022

Materials

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Buton Rock Asphalt (BRA) refers to the natural rock asphalt natively produced on the Buton island of Indonesia. It is often used as a modifier to enhance the performance of asphaltpavement. However, the segregation of BRA in BRA-Modified Asphalt (BRA-MA) has restricted its application. This study aims to investigate how the particle size and content of BRA affect the physical properties and storage stability of BRA-MA. Penetration, softening point, viscosity, and viscosity-temperature susceptibility (VTS) were analyzed. The evaluation method of storage stability was discussed and determined. The segregation of BRA in BRA-MA of static storage and transportation process were simulated and tested. The results suggest that the softening point and viscosity were positively correlated to BRA content and inversely determined by particle size. Penetration, VTS, and ductility were reduced due to the decline in particle size and increment of BRA content. The index of segregation value based on viscosity difference showed better statistical and quantitative significances than the softening-point difference in evaluating the storage stability. The particle size and content of BRA are positively correlated to the segregation of BRA-MA. Both the storage temperature and time were positively correlated to the segregation of BRA-MA. We prove that the relationship between specific surface area and segregation are power functional. BRA-MA with BRA whose 50% particle sizes are lower than 13.6 μm showed low segregation in transportation.

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Effects of polyphosphoric acid (PPA), styrene‐butadiene‐styrene (SBS), or rock asphalt on the performance of desulfurized rubber modified asphalt

Cited by 13 publications

References 29 publications

Synthesis of tannic acid‐terephthalyl chloride modified rubber powder for the fabrication of tannic acid‐terephthalyl chloride‐rubber/styrene‐butadiene‐styrene modified asphalt

Synthesis of tannic acid‐terephthalyl chloride modified rubber powder for the fabrication of tannic acid‐terephthalyl chloride‐rubber/styrene‐butadiene‐styrene modified asphalt

Potential Additives in Natural Rubber-Modified Bitumen: A Review

Physical Properties and Storage Stability of Buton Rock Asphalt Modified Asphalt

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