Linking intermolecular interactions and rheological behaviour in capillary suspensions

Jarray, Ahmed; Feichtinger, Annika; Scholten, Elke

doi:10.1016/j.jcis.2022.07.067

Cited by 12 publications

(1 citation statement)

References 54 publications

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“…From a physicochemical point of view, modification of the binder with a polymer and surfactant is accompanied by a change in the heterophase, the dispersion of the bitumen system, and ends with the formation of a new, stable system under these conditions, differing from the original bitumen in spatial, rheological, structural, and mechanical characteristics of the modified compositions. The rheological assessment of the bulk properties of solutions provides an idea of the change in the intermolecular interactions of the system [13]. It has been established [14] that viscosity is very sensitive to the formation of self-organizing intermolecular assemblies of various types.…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Microstructure and Viscosity of Modified Bitumen on the Strength of Asphalt Concrete

Dyuryagina,

Byzova,

Ostrovnoy

et al. 2024

Polymers

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The purpose of these studies was to establish the influence of the microstructural and rheological characteristics of modified bitumen compositions on the strength indicators of asphalt concrete. The effect of additives concentration on the rheological characteristics and microstructure of binary “bitumen–surfactant”, “bitumen-AG-4I”, and ternary “bitumen-AG-4I-AG-4I” systems has been studied. To assess the effect of bitumen dispersion on the physical and mechanical characteristics of modified asphalt concrete samples, the compressive strength value was determined. The following chemicals have been used as additives: the original product AS-1, industrial additive AMDOR-10, and used sealant AG-4I, a product based on polyisobutylene and petroleum oils. At an increased content of AG-4I (C ≥ 1.0 g/dm3) in ternary systems, the contribution of the emerging intermolecular polyisobutylene network to the development of structuring processes increases while the viscous effect of the surfactant AS-1 decreases. It has been established that the minimum size of bee-like bitumen structures (1.66 µm) is recorded with the joint presence of additives in the bitumen, AS-1 at a level of 1.0 g/dm3 and AG-4I at a level of 1.0 g/dm3. Under the same concentration regimes of the ternary bitumen composition, the maximum increase in compressive strength RD was achieved with the smallest size of bee-like structures of modified bitumen.

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Section: Introductionmentioning

confidence: 99%