Studies on the properties of modified heavy calcium carbonate and SBS composite modified asphalt

Li, Jing; Song, Yang; Liu, Yu; Muhammad, Yaseen; Su, Zhibin; Yang, Jing

doi:10.1016/j.conbuildmat.2019.05.139

Cited by 71 publications

(24 citation statements)

References 27 publications

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“…DSR test affords direct information of the complex modulus (G*) and phase angle ( δ ) caused by asphalt deformation under certain shear stress, and determines the corresponding storage modulus (G') and loss modulus (G") based on Equations ) and (), respectively 41

normalG' = ∣ G^{*} ∣ * \cos δ

normalG " = ∣ G^{*} ∣ * \sin δ

where G' and G" refer to the energy stored in the asphalt during the deformation process determining the elastic properties of the asphalt, and the energy lost during the deformation process of the asphalt due to external forces, respectively, and measure the asphalt's viscous properties.…”

Section: Resultsmentioning

confidence: 99%

Preparation of hyperbranch‐structured polyester fiber via thiol‐ene click reaction under UV light irradiation for asphalt binder modification

Meng

Muhammad

et al. 2020

J of Applied Polymer Sci

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This study reports the application of UV induced "thiol-ene click reaction" by coupling the covalent bonds of venyl-terminated dendritic polyester (VTDP) and polyester (PET) fiber and resulting in the fabrication of hyperbranchstructured PET named as VTDP-PET fiber. The PET fiber or VTDP-PET fiber as additives were blended with styrene-butadiene-styrene modified asphalt (SBSMA) to prepare fiber/SBSMAs. Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectrometry, and X-ray photoelectron spectroscopy characterizations indicated that VTDP-PET fiber was linked with spherical three-dimensional dendritic molecular structure. Cone penetration, dynamic shear rheometer, multistress creep recovery, and thermogravimetric analysis tests showed that VTDP-PET/SBSMA exhibited enhanced resistance to flow, viscoelasticity, resistance against rutting, and thermal stability as compared to those of PET/SBSMA. The newly designed PET fiber and VTDP-PET fiber can be envisioned as effective alternative candidate for the fabricated of modified SBSMA with enhanced performances for practical applications in construction and highway industries.

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normalG' = ∣ G^{*} ∣ * \cos δ

normalG " = ∣ G^{*} ∣ * \sin δ

Section: Resultsmentioning

confidence: 99%

Preparation of hyperbranch‐structured polyester fiber via thiol‐ene click reaction under UV light irradiation for asphalt binder modification

Meng

Muhammad

et al. 2020

J of Applied Polymer Sci

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“…G * expresses the deformation resistance of asphalt while G′ represents the elastic properties of asphalt and their larger values indicate better elastic properties of asphalt 21 . G″ characterizes the viscosity performance of asphalt and its higher value is indicative of better viscosity performance of asphalt 22,23 …”

Section: Resultsmentioning

confidence: 99%

“…21 G 00 characterizes the viscosity performance of asphalt and its higher value is indicative of better viscosity performance of asphalt. 22,23 F I G U R E 1 The flow chart of modified fiber preparation [Color figure can be viewed at wileyonlinelibrary.com] Figure 2 shows that the G * of fiber incorporated SBS modified asphalt is larger than that of the pristine SBS modified asphalt. The G * of PAN/SBS and KD-PAN/ SBS composite modified asphalt raises as the fiber content increases.…”

Section: Dsr Testmentioning

confidence: 99%

Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt

Huang

et al. 2020

J of Applied Polymer Sci

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This study reports the effect of polydopamine bionic coating and γ-methacryloxypropyltrimethoxysilane (KH570) composite modified polyacrylonitrile (PAN) fiber as a secondary modifier on the performance of styrenebutadiene-styrene (SBS) modified asphalt. Dynamic shear rheometer test indicated the complex shear modulu, storage modulus, and loss modulus of modified PAN (KD-PAN) incorporated SBS modified asphalt was increased by 12.4, 20.5, and 11.2%, respectively compared with PAN/SBS modified asphalt. The master curve of G * of fiber/SBS composite modified asphalt shows that the deformation resistance of KD-PAN/SBS modified asphalt is greater than that of PAN/SBS modified asphalt in the entire loading frequency range. The cone penetration test showed significantly enhanced shear strength of KD-PAN/SBS modified asphalt. The adhesion work test results and SEM images of interface between fiber and SBS modified asphalt revealed that the adhesion effect of KD-PAN and SBS modified asphalt is better than that of PAN and SBS modified asphalt. SEM and AFM images of fiber further showed that the fiber surface becomes rough after modification. The increased surface

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“…As described in some researches, the electrons loss of iron element on the interface between steel bar and air or water is essential in steel bars' corrosion. After corrosion, the conductive path of pore solution is blocked by the rust, leading eventually to reducing the conductivity of steel bars reinforced concrete [21,22]. Therefore, specimens with higher electrical resistivity possess better corrosion resistance.…”

Section: Corrosion Resistance Of Steel Barsmentioning

confidence: 99%

Research on the Influence of Carbonation on the Content and State of Chloride Ions and the Following Corrosion Resistance of Steel Bars in Cement Paste

Wang

Zhang

et al. 2020

Coatings

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In this paper, the changes of free chloride ion concentration and bound chloride concentration in cement paste with different total and proportion of mineral admixtures under carbonation were studied. Moreover, the following corrosion resistance of steel bars buried in cement paste under carbonation was researched by testing the electrical resistance and alternating current (AC) impedance spectroscopy of reinforced cement paste. Results indicated that fly ash and granulated blast furnace slag powder with the content less than 20% by mass ratio of total binder hindered the solidification of chloride ions in cement-based materials, and blast furnace slag powder with the content higher than 20% promoted the solidification of chloride ions in cement paste. The carbonation effect was able to decrease the amount of solidified chloride ion and increase the amount of free chloride ions leading to accelerating the corrosion of reinforcement. Meanwhile, the blast furnace slag powder with the content higher than 20% could effectively promote the corrosion resistance of steel bars.

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Studies on the properties of modified heavy calcium carbonate and SBS composite modified asphalt

Cited by 71 publications

References 27 publications

Preparation of hyperbranch‐structured polyester fiber via thiol‐ene click reaction under UV light irradiation for asphalt binder modification

Preparation of hyperbranch‐structured polyester fiber via thiol‐ene click reaction under UV light irradiation for asphalt binder modification

Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt

Research on the Influence of Carbonation on the Content and State of Chloride Ions and the Following Corrosion Resistance of Steel Bars in Cement Paste

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