Evaluations of Asphalt-Based Sealant Used in Concrete Caulking: Rheology, Adhesion Properties, and Microstructures

Li, Jiarong; Sha, Aimin; Wang, Zhenjun; Cao, Yangsen; Song, Rui; Xue, Hengxiao

doi:10.1061/(asce)mt.1943-5533.0004471

Cited by 3 publications

(1 citation statement)

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“…In Figure 7A, the densely distributed dotted material on the asphalt surface indicates agglomerated SBS polymer distribution in the asphalt phase, and the larger particle size of the SBS polymer reveals an incomplete swelling development. 61 In Figure 7B, the dotted material exhibits better dispersion. Still, there is entanglement and agglomeration in the strips, which is attributed to the 3D network structure of the fiber-incorporated asphalt that efficiently helps the SBS polymer to absorb the lighter components of asphalt.…”

Section: Characterization Of the Fiber-asphalt Interfacementioning

confidence: 95%

Investigating the adhesion and rheological properties of metal organic framework incorporated polyester fiber/zeolite imidazolium salt framework‐67‐modified asphalt composite

He,

Ren,

Muhammad

et al. 2023

Polymer Composites

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Utilizing efficient and cost‐effective modifiers is essential for the development of high‐performance asphalt materials. In this study, a polydopamine (PDA) chelated cobalt ion (Co2+)‐assisted in situ growth strategy was employed to anchor nanoporous zeolite imidazolium salt framework‐67 (ZIF‐67) on polyester (PET) fiber substrates for the preparation of styrene‐butadiene‐styrene block copolymer‐modified asphalt (SBS‐MA). Experimental results indicated that optimal fiber incorporation of 1.5% led to the best interfacial interaction at the modified asphalt fracture section. ZIF‐67 nanoporous structure acted as an organic–inorganic hybridization interfacial layer to enhance the fiber–asphalt interfacial interaction. The adhesion work of the modified fiber with SBS‐MA increased by 42.12%. Furthermore, the adhesion work, peeling work, and compatibility ratio of modified asphalt with aggregates were also improved. Similarly, the complex modulus of the 1.5% ZIF‐67–PDA–PET/SBS‐MA at 46°C was increased by 131.30% in comparison with that of the pristine SBS‐MA. More importantly, the synergistic effect of the highly thermally stable PET fibers and ZIF‐67 nanocrystals improved the thermal decomposition of SBS‐MA. These results suggest that ZIF‐67–PDA–PET fiber holds great promise for application in designing novel materials for the construction industry.

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Section: Characterization Of the Fiber-asphalt Interfacementioning

confidence: 95%