Effect of hydrated lime and organosilane based adhesion promoters on performance of bituminous concrete mixes

Goel, Gourav; Sachdeva, S. N.

doi:10.1016/j.matpr.2020.01.375

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…Following this treatment, the interfacial free energy of the aggregates surface/bitumen interface becomes favoured over that of the aggregates surface/water interface which led to a very strong aggregate/bitumen adhesion that resisted de-bonding by water. Goel and Sachdeva [ 111 ] employed hydrated lime and organosilane-based adhesion promoters to increase the resistance of bituminous concrete mixes to moisture damage. The results show that 2 % hydrated lime and 0.05 % organosilane-based adhesion promoter enhances the tensile strength ratio of bituminous concrete mixes which indicates that they are less susceptible to moisture damage.…”

Section: Factors Affecting Bitumen Propertiesmentioning

confidence: 99%

Durability of bitumen binder reinforced with polymer additives: Towards upgrading Nigerian local bitumen

Olalekan,

Olatunde,

Kolapo

et al. 2024

Heliyon

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Section: Factors Affecting Bitumen Propertiesmentioning

confidence: 99%

Durability of bitumen binder reinforced with polymer additives: Towards upgrading Nigerian local bitumen

Olalekan,

Olatunde,

Kolapo

et al. 2024

Heliyon

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“…This special molecular feature allows an organosilane to bridge between the organic and inorganic components of a composite material, leading to better stability due to the increased intermolecular interactions. The merits of using organosilane to increase the quality of bituminous mixtures have been shown in several studies. − It was found that a nanostructured organosilane could effectively strengthen bitumen–aggregate adhesion and improve the resistance of a bituminous composite to moisture damage . A nano-organosilane was introduced for applying with tack coat to ensure the strong bonding of the tack coat to an existing layer .…”

Section: Introductionmentioning

confidence: 99%

Bio-Modifier: A Sustainable Suturing Technology at the Bitumen–Aggregate Interface

Shariati

Aldagari

Fini

2023

ACS Sustainable Chem. Eng.

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Premature failure at the bitumen−aggregate interface is attributed to the surface chemistry of stone aggregates. Bitumen modifiers with high affinity toward aggregates are often used to change the surface chemistry of aggregates, which in turn changes the type and strength of stones' interactions with bitumen.Here, the mechanisms of action and the effects of an organosilane and bio-oil separately on the bitumen−aggregate interface, including their binding to aggregates from one side and to bitumen from the other side, were studied and compared. The binding of bio-oils and organosilanes to aggregates is well documented, as well as their efficacy as anti-stripping agents, but their binding to bitumen is not well understood. Using glass beads as a surrogate for siliceous stones, we obtained laboratory measurements of interfacial strength as measured by resistance to shear forces at the interface of bitumen and silica. Our laboratory measurements showed the highest value for the bitumen modified with bio-oil, followed by the control bitumen with no modification, and the lowest value for the bitumen modified with organosilane. Our molecular modeling calculations showed that the adhesion of bitumen molecules to silica coated with bio-oil was notably stronger (up to 72%) than the adhesion of bitumen molecules to silica coated with organosilane. The higher interfacial strength observed for bitumen with bio-oil is attributed to bio-oil having various functional groups with the ability to form hydrogen bonds and π−π interactions with the aromatic and polar components of bitumen. The study outcomes highlight the importance of modifiers' ability to strongly interact with both aggregates and bitumen. The bio-oil modifier introduced in this work can form a robust bridge between bitumen and siliceous aggregates to improve the adhesive properties, enhancing the sustainability and durability of bituminous composites.

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Effect of anti-stripping agents and polypropylene fibreon stripping of polymer modified bitumen

Jalota,

Suthar

2024

AIP Conference Proceedings

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Effect of hydrated lime and organosilane based adhesion promoters on performance of bituminous concrete mixes

Cited by 3 publications

References 9 publications

Durability of bitumen binder reinforced with polymer additives: Towards upgrading Nigerian local bitumen

Durability of bitumen binder reinforced with polymer additives: Towards upgrading Nigerian local bitumen

Bio-Modifier: A Sustainable Suturing Technology at the Bitumen–Aggregate Interface

Effect of anti-stripping agents and polypropylene fibreon stripping of polymer modified bitumen

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