Precision of Iatroscan Method for Assessment of SARA Compounds in Bitumen

Simnofske, Diana; Mollenhauer, Konrad

doi:10.1007/978-3-030-00476-7_26

Cited by 8 publications

(11 citation statements)

References 7 publications

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“…Hence, the SARA group‐type composition results obtained using the procedures IP decr and GUT decr can be considered as definitely more representative for the investigated asphalts and VR. To obtain satisfying reproducibility, it is necessary to ensure compliance with the subsequent steps of the procedure, as its results are affected by the weight of the sample applied to the rod, scanning speed, age of the prepared solution, and the degree of wear of the Chromarod rods [23]. The repeatability values expressed by the standard deviation of the mean value (Supporting Material Appendix A1) and the calculated values of the CIs (Supporting Material Appendix A2, Figure 2B) are similar for all separation conditions tested including the standardized IP 469 methodology.…”

Section: Resultsmentioning

confidence: 99%

A novel thin layer chromatography–flame ionization detection method for saturated, asphaltenes, resins, and asphaltenes group‐type composition analysis with reverse order of chromatogram development

Wojewódka,

Dyguła,

Przyjazny

et al. 2023

J of Separation Science

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The methodologies of asphaltenes‐containing petroleum materials: saturated, aromatics, resins, asphaltenes group‐type composition analysis are performed with the use of column adsorption‐desorption or thin layer chromatography (TLC)‐flame ionization detection under normal phase conditions with silica gel as the adsorbent. In a three‐step procedure, the TLC chromatogram is developed within a decreasing distance by the mobile phase with increasing elution strength (polarity). The n‐alkane used in the first step does not dissolve asphaltenes, which leads to the occlusion effect and an underestimation of the percentage of saturated hydrocarbons. In this article, the reverse order of the subsequent elution steps was proposed: the solvent polarity is simultaneously reduced and the chromatogram development distance is increased in the order dichloromethane:methanol 95:5 v/v, 3 cm; toluene, 6 cm; and n‐hexane, 10 cm. It was also intentional to reduce the weight of the applied sample to 5 μg for bitumen and 2 μg for asphaltene purity testing. It should be the rule that in stepwise TLC chromatogram development, the first mobile phase is a good solvent for all testing components. The IP 469 procedure should be corrected.

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Section: Resultsmentioning

confidence: 99%

A novel thin layer chromatography–flame ionization detection method for saturated, asphaltenes, resins, and asphaltenes group‐type composition analysis with reverse order of chromatogram development

Wojewódka,

Dyguła,

Przyjazny

et al. 2023

J of Separation Science

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“…Fractionation analysis was carried out by making use of a methodology that combines thin layer chromatography (TLC, LSI Medience Corporation, Tokyo, Japan) and flame ionization detection (FID, LSI Medience Corporation, Tokyo, Japan) [ 17 , 18 , 19 ]. TLC allows the separation of SARA fractions (saturates, aromatics, resins and asphaltenes) through their successive elution in solvents of increasing polarity, while FID allows for the quantification of the relative amounts of the four fractions.…”

Section: Methodsmentioning

confidence: 99%

Experimental Evaluation and Modeling of Physical Hardening in Asphalt Binders

et al. 2021

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The research described in this paper deals with the experimental evaluation and modeling of physical hardening in asphalt binders. The term physical hardening refers to a reversible phenomenon occurring at low temperatures that causes time-dependent changes in viscoelastic properties. The experimental approach, followed to quantitatively assess physical hardening, was based on flexural creep tests carried out by means of the Bending Beam Rheometer at various temperatures and conditioning times. The results obtained confirmed that hardening phenomena have a significant influence on the creep response of asphalt binders, to an extent that can be quantitatively assessed by referring to the appropriate rheological parameters and by applying the loading time–conditioning time superposition principle. The experimental data were fitted to a mechanical model proposed in the literature (composed of a single Kelvin–Voigt element) and thereafter to an improved model (with two Kelvin–Voigt elements in series). Both models were assessed in terms of their prediction accuracy. The improved model was found to better describe physical hardening effects in the case of both short- and long-term conditioning. Practical implications of the study were finally highlighted by referring to possible ranking criteria to be introduced in acceptance procedures for the comparative evaluation of asphalt binders.

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“…One such research demonstrated that a minor increase in the percentage of PEFs from 1.5 % to 1.75 % corresponded with an STS and tensile strain enhancement by approximately 15 % and 6 % [ 148 ]. In comparison, another research found an increase in STS and tensile strain up to a PEFs of 1 %, after which both started to decline [ 154 ]. The introduction of 1 % PEFs (by vol.)…”

Section: Impacts Of Parameters Related To Fibers On Uhpgpcmentioning

confidence: 99%

A state-of-the-art review of the physical and durability characteristics and microstructure behavior of ultra-high-performance geopolymer concrete

Hakeem,

Zaid,

Arbili

et al. 2024

Heliyon

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Precision of Iatroscan Method for Assessment of SARA Compounds in Bitumen

Cited by 8 publications

References 7 publications

A novel thin layer chromatography–flame ionization detection method for saturated, asphaltenes, resins, and asphaltenes group‐type composition analysis with reverse order of chromatogram development

A novel thin layer chromatography–flame ionization detection method for saturated, asphaltenes, resins, and asphaltenes group‐type composition analysis with reverse order of chromatogram development

Experimental Evaluation and Modeling of Physical Hardening in Asphalt Binders

A state-of-the-art review of the physical and durability characteristics and microstructure behavior of ultra-high-performance geopolymer concrete

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