The effect of progressive aging on the bond strength of bitumen to siliceous stones

Rajib, Amirul Islam; Shariati, Saba; Fini, Elham H.

doi:10.1016/j.apsusc.2021.149324

Cited by 27 publications

(12 citation statements)

References 27 publications

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“…The change in shear-thinning slope after water conditioning is closely related to the effect of water at the interface between bitumen and glass beads. A MISTI value closer to 1 indicates better resistance to moisture damage. , …”

Section: Methodsmentioning

confidence: 99%

“…The interaction between bitumen and glass beads is closely related to the shear-thinning slope; a steeper shear-thinning slope indicates greater interaction between bitumen and glass beads. 44,46,71 Better resistance to moisture damage is associated with a MISTI value closer to 1; a MISTI value of 1 implies no changes at the interface due to water. 44 It is worth mentioning that improvements in moisture resistance were observed for bitumen containing amines; bitumen containing amines had MISTI deviations values lower than the MISTI deviation value of bitumen containing non-treated zeolite.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…44,46,71 Better resistance to moisture damage is associated with a MISTI value closer to 1; a MISTI value of 1 implies no changes at the interface due to water. 44 It is worth mentioning that improvements in moisture resistance were observed for bitumen containing amines; bitumen containing amines had MISTI deviations values lower than the MISTI deviation value of bitumen containing non-treated zeolite. This is consistent with other studies' findings that amine-based additives are a highly effective antistripping agent.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Reducing the Carbon Footprint of Bituminous Composites Using Amine-Impregnated Zeolite

Mousavi

Aldagari

Seo

et al. 2022

ACS Sustainable Chem. Eng.

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Moisture damage in bituminous composites is a major concern, reducing the service life of infrastructures. The use of lime and amine-based additives to mitigate the damage has been practiced in the industry. Lime production is an inherently carbon-intensive process involving large quantities of CO2 emissions. Amine-based additives lose their effectiveness over time when exposed to weathering and UV irradiation. Inspired by the technology of amine-functionalized porous materials, here, we study the merits of using amine-impregnated zeolite in bituminous composites to protect amines from weathering and UV. We hypothesize that some of the ethylenediamine molecules loaded into the zeolite’s pores are gradually released into the matrix of bitumen, with the protection in the zeolite’s pores allowing the ethylenediamine molecules to maintain their effectiveness as antistripping agents until their release. Our laboratory experiments used the moisture-induced shear-thinning index to compare the moisture resistance of samples with amine-impregnated zeolite to samples with amines and zeolite added separately. Initially (before aging), the samples with amines and zeolite added separately have higher resistance to moisture damage compared to amine-impregnated zeolite (in which 52% of the total amines are retained in the zeolite). The superior performance of amine-impregnated zeolite is shown after short-term laboratory aging. After short-term aging and throughout long-term aging in the laboratory, the comparative resistance to moisture damage increasingly favored the amine-impregnated zeolite owing to the slow release of retained amines under an external stimulus induced by aging. This slow release of retained amines extends the effectiveness of the amines as the amines retained within zeolite pores are protected from early aging. Our quantum-based calculations using density functional theory (DFT) show that some small polar compounds of bitumen take advantage of stronger interactions with zeolite’s active sites to substitute for amine molecules; this could be a driving force for the gradual release of amine molecules from zeolite to the bitumen matrix. Our DFT studies on seven polar compounds of bitumen (quinoline, pyridine, benzofuran, benzoic acid, hexanal, 3-pentylthiophene, and hexanethiol) show that many of these compounds have stronger interactions with the zeolite model, particularly in the exterior walls of the intact sodalite cage ({111} face) and supercage-window sites, leading to deliver the loaded substance (ethylenediamine) into the medium. In contrast, amine molecules grafted onto the active sites of the broken sodalite cage ({100} cut) benefit from many H-bonding interactions at this active site, so these amine molecules are not easily substituted or released into the bitumen matrix.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Reducing the Carbon Footprint of Bituminous Composites Using Amine-Impregnated Zeolite

Mousavi

Aldagari

Seo

et al. 2022

ACS Sustainable Chem. Eng.

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“…Oxidation introduces polar carbonyl (CO) and sulfoxide (SO) functional groups to the asphaltene molecules , and reinforces the asphaltene’s agglomeration in bitumen; agglomeration of oxidized asphaltene has been reported as a major cause of bitumen’s aging that reduces the efficacy of bitumen as a binder . Oxidative stress and loss of mass at high temperatures are linked to the premature aging of bitumen . An experiment compared the resistance to aging of a bitumen blown at 200 °C and a bitumen blown at 245 °C .…”

Section: Introductionmentioning

confidence: 99%

Reducing the Carbon Footprint of Air-Blown Bitumen Using Physisorption

Shariati

Hajikarimi

Rahi

et al. 2022

ACS Sustainable Chem. Eng.

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This research uses experiments and molecular modeling calculations to study the efficacy of using polyphosphoric acid (PPA) grafted to silica to produce airblown bitumen with the desired stiffness at a lower air-blowing time and temperature. Lowering the air-blowing time and temperature leads to reductions in the emitted volatile organic compounds (VOCs), the environmental carbon footprint, and the use of energy and resources. Our experiment showed that using PPA-grafted silica reduced the air-blowing time required to achieve the desired penetration [90 (0.1 mm)] and softening point (45 °C) by up to 29 and 50%, respectively, compared to neat vacuum bottom residue (VBR). Molecular modeling calculations showed that the adsorption of PPA to silica changed the intramolecular hydrogen-bond network in the backbone of PPA and promoted the interaction of PPA-grafted silica with VBR molecules, especially with VOCs. Increased intermolecular interactions facilitate the stiffening of VBR, leading to a lower duration of air blowing. Furthermore, these interactions can directly trap the VOCs and reduce their emission to the environment. The study outcomes show the merits of using PPA-grafted silica to produce the desired bitumen grades while reducing the duration of air blowing, to improve the energy efficiency and reduce the environmental impact of the process.

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“…Te Hansen solubility parameter was used to understand the components in asphalt models [7]. Researchers have built computational modeling in order to investigate the mechanism of asphalt's adhesion to a mineral surface [25]. For instance, Fan et al used molecular dynamics (MD) simulation to study the adhesion mechanisms between asphalt and component minerals [26].…”

Section: Introductionmentioning

confidence: 99%

Effect of Iron Oxide on Self-Healing and Thermal Characteristics of Asphalt Based on Molecular Dynamics Simulation Perspective

Zhu³

et al. 2022

Advances in Materials Science and Engineering

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To compare the effects of two powders, iron oxide and mineral, on the healing process of asphalt molecules, Fe2O3-asphalt and SiO2-asphalt were constructed by Material Studio software (MS). The mean square displacement, diffusion coefficient, concentration distribution of the asphalt layer, and the thermal conductivity of the two models were analyzed to evaluate the influence of two powders on the diffusion behavior of asphalt molecules on a microlevel. The results show that the effect of Fe2O3 on the diffusion rate of asphalt molecules is greater than that of SiO2 at high temperature, but the effects are similar at low temperature. The diffusion coefficient of the Fe2O3-asphalt model increases faster than that of the SiO2-asphalt model with increasing temperature. Compared with SiO2, Fe2O3 is more conducive to the model’s reaching a state of uniform concentration, which is manifested as the rapid repair of cracks on a macrolevel. The thermal conductivity of the Fe2O3-asphalt model is higher than that of the SiO2-asphalt model.

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The effect of progressive aging on the bond strength of bitumen to siliceous stones

Cited by 27 publications

References 27 publications

Reducing the Carbon Footprint of Bituminous Composites Using Amine-Impregnated Zeolite

Reducing the Carbon Footprint of Bituminous Composites Using Amine-Impregnated Zeolite

Reducing the Carbon Footprint of Air-Blown Bitumen Using Physisorption

Effect of Iron Oxide on Self-Healing and Thermal Characteristics of Asphalt Based on Molecular Dynamics Simulation Perspective

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