Influence of calcium sulfate whisker on the high temperature performance of asphalt binder

Fan, Taotao; Wang, Xiushan

doi:10.1080/10916466.2019.1702687

Cited by 15 publications

(5 citation statements)

References 11 publications

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“…In contrast to the base asphalt mixture, after the single addition of 6%ACSW, the DS of the modified asphalt mixture increased by 97.3% from 2287 to 4512 times/mm. This finding is consistent with the results obtained in an earlier investigation reported by Fan et al [ 43 ] that the ACSW provide strength and stiffness to asphalt mixture, resulting in better-resisting deformation under high-temperature conditions. In contrast to the ACSW-modified asphalt mixture, there was a minor decrease in DS with an increase in the WCO level.…”

Section: Resultssupporting

confidence: 93%

Experimental Investigation of Eco-Friendly Anhydrous Calcium Sulfate Whisker and Waste Cooking Oil Compound Modified Asphalt Mixture

2023

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In recent years, waste material recycling and reuse have attracted great interest as environmentally friendly modifiers to improve asphalt pavement performance. In this study, anhydrous calcium sulfate whiskers (ACSW), synthesized using phosphogypsum waste, and waste cooking oil (WCO), one of the most prevalent waste oils, were used together as modifiers to create an environmentally friendly asphalt mixture. In particular, WCO was used to compensate for the negative effects of ACSW on asphalt mixture performance at low temperatures. A variety of ACSW and WCO compound-modified asphalt mixtures were fabricated. High-temperature stability, medium-temperature fatigue, low-temperature anti-cracking, moisture susceptibility, repeated freeze–thaw, and long-term aging tests were conducted to comprehensively evaluate the pavement performance. Compared to the base asphalt mixture, the compound-modified asphalt mixtures were demonstrated to have better high- and low-temperature, moisture susceptibility, fatigue, anti-freezing, and anti-aging properties, especially for the 6%ACSW and 2%WCO compound-modified asphalt mixture. Therefore, the 6%ACSW and 2%WCO compound-modified asphalt mixture was ultimately selected for use in construction, as this mixture can meet the requirements for regions with cold winters and hot summers.

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Section: Resultssupporting

confidence: 93%

Experimental Investigation of Eco-Friendly Anhydrous Calcium Sulfate Whisker and Waste Cooking Oil Compound Modified Asphalt Mixture

2023

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“…Combining the results of the Brookfield rotational viscosity test and the DSR test, the ACSW and polyester fiber-compound modification had an obvious enhancement in the temperature-sensitivity and high-temperature anti-deformation of the asphalt binder, and this finding was consistent with the references [15,16]. The optimal contents of the APMA with better high-temperature rheological characteristics were 11 wt.% ACSW and 8 wt.% polyester fiber.…”

Section: Failure Temperaturesupporting

confidence: 84%

“…Fan et al investigated the high-and low-temperature, rheological, and viscosity-temperature properties of ACSWs based on the DSR, BBR, and Brookfield rotational viscosity tests. The authors found that, when the contents of ACSW ranged from 7 wt.% to 11 wt.%, the high-temperature and rheological properties of the asphalt were obviously enhanced, while, on the contrary, their temperature-sensitivity and low-temperature properties were weakened [15,16]. To overcome the disadvantage of ACSWs on the low-temperature properties of asphalt binders, it is necessary to develop a compound-modified asphalt binder.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of the Properties of Asphalt Binders Modified with Calcium Sulfate Anhydrous Whiskers and Polyester Fibers

Fan,

Si,

Gao

2023

Coatings

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The use of waste calcium sulfate whiskers in pavement construction is cost-effective and beneficial to the environment. In this paper, modified asphalt binders are prepared by adding calcium sulfate anhydrous whiskers (ACSW, 9 wt.%,11 wt.%, and 13 wt.% by weight of asphalt binder) and polyester fibers (4 wt.%,6 wt.%, and 8 wt.% by weight of asphalt binder). The viscosity-temperature, rheological, and low-temperature properties of the modified asphalt binder were evaluated using the Brookfield rotational viscosity test, the dynamic shear rheometer (DSR) test, the bending beam rheometer (BBR) test, and the force ductility test. The results demonstrated that the addition of the ACSW and polyester fiber could improve the anti-deformation and low-temperature properties of the asphalt binders, but reduce their viscosity-temperature properties to some extent. The modified asphalt binder with 11 wt.% ACSW and 8% polyester fiber showed the best anti-deformation property, while the 11 wt.% ACSW and 6 wt.% polyester fiber modified asphalt binder had a better low-temperature performance. The force ductility test was more suitable than the BBR test to characterize the low-temperature properties of the modified asphalt binders. The Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) tests were conducted to study the functional groups and micro-structure of the modified asphalt binders, and the results indicated that no new functional groups were generated and that the interaction between the ACSW, polyester fiber, and asphalt binder was a physical adsorption and interleaving process.

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“…In dentistry, these whiskers are used as raw materials for oral coatings to improve the hardness and corrosion resistance of the tooth surfaces. 84 In addition, they can be used as drug delivery carriers to improve the therapeutic efficiency of antitumor drugs. 85 Inorganic salt whiskers are used the surface or internal structure of implants, thereby improving the biocompatibility and osseointegration of implants.…”

Section: Classification Of Whiskersmentioning

confidence: 99%

Recent Advances in Whiskers: Properties and Clinical Applications in Dentistry

Han,

Zhang,

Liu

et al. 2024

IJN

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Whiskers are nanoscale, high-strength fibrous crystals with a wide range of potential applications in dentistry owing to their unique mechanical, thermal, electrical, and biological properties. They possess high strength, a high modulus of elasticity and good biocompatibility. Hence, adding these crystals to dental composites as reinforcement can considerably improve the mechanical properties and durability of restorations. Additionally, whiskers are involved in inducing the value-added differentiation of osteoblasts, odontogenic osteocytes, and pulp stem cells, and promoting the regeneration of alveolar bone, periodontal tissue, and pulp tissue. They can also enhance the mucosal barrier function, inhibit the proliferation of tumor cells, control inflammation, and aid in cancer prevention. This review comprehensively summarizes the classification, properties, growth mechanisms and preparation methods of whiskers and focuses on their application in dentistry. Due to their unique physicochemical properties, excellent biological properties, and nanoscale characteristics, whiskers show great potential for application in bone, periodontal, and pulp tissue regeneration. Additionally, they can be used to prevent and treat oral cancer and improve medical devices, thus making them a promising new material in dentistry.

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Influence of calcium sulfate whisker on the high temperature performance of asphalt binder

Cited by 15 publications

References 11 publications

Experimental Investigation of Eco-Friendly Anhydrous Calcium Sulfate Whisker and Waste Cooking Oil Compound Modified Asphalt Mixture

Experimental Investigation of Eco-Friendly Anhydrous Calcium Sulfate Whisker and Waste Cooking Oil Compound Modified Asphalt Mixture

Experimental Evaluation of the Properties of Asphalt Binders Modified with Calcium Sulfate Anhydrous Whiskers and Polyester Fibers

Recent Advances in Whiskers: Properties and Clinical Applications in Dentistry

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