Chapter 11 Analysis of Asphalt and Its Components by Thin-Layer Chromatography

Dunn, Kerry; Chilingarian, George V.; Lian, Hsienjen; Wang, Y.Y.; Yen, Teh Fu

doi:10.1016/s0376-7361(09)70282-1

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…In total, seven healing agents were used in this study, which are listed as follows: sunflower oil (KY), sunflower oil emulsion (KR), aromatic oil (FY), aromatic oil emulsion (FR), two commercial maltene-based emulsions (HA-2 and HA-3), and base asphalt emulsion (BBE). Table 2 gives the test results on the measured viscosity and the four components (saturates, aromatics, resins, and asphaltenes) determined by means of thin-layer chromatography (TLC) interfaced with flame ionization detection (FID) (IATROSCAN MK-6, LSI Medience Corporate, Tokyo, Japan) [ 39 ]. The particle size of the healing emulsions including KR, FR, HA-2, HA-3, and BBE agents was observed by an XSP-16A biological microscope produced by Nanjing Jiangnan Yongxin Optical Co., Ltd. (Nanjing, China) Almost all of particles are less than 10 μm and more than 80% of them were less than 5 μm.…”

Section: Methodsmentioning

confidence: 99%

Effect of Healing Agents on Crack Healing of Asphalt and Asphalt Mortar

et al. 2018

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This study investigated the effect of seven healing agents on crack healing ability of long-term aged asphalt and its mortar. Different healing agents including sunflower oil, aromatic oil, bitumen emulsion, and maltene-based emulsions were used. The crack healing of asphalt made use of two asphalt disk samples and healing was evaluated using direct tensile tests. For asphalt mortar, notched semi-circular samples were used. Test results indicated that the crack healing of asphalt and its mortar depended strongly on the type of healing agent. In general, asphalt healed faster than its mortar. Asphalt healing could be well improved by using oil agents, while asphalt mortar could be well healed with maltene-based emulsions. The crack healing of asphalt mortar developed rapidly followed by a steady state of increase. Initial crack healing using healing agents could be contributed by the diffusion and softening effects, which resulted in low strength recovery. Long term healing could lead to the bonding reconstitution in the cracks, which were decisive for the final strength gain. The promising healing agent should be able to achieve maximum strength recovery to resist cracking as well as a sufficient re-healing ability to deal with crack opening and closing.

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Section: Methodsmentioning

confidence: 99%

Effect of Healing Agents on Crack Healing of Asphalt and Asphalt Mortar

et al. 2018

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“…is technique separates asphalt fractionates by some organic solvents. For example, asphaltene is precipitable by n-heptane where maltene dissolves, saturate by cyclohexane, aromatic by dichloromethane, and finally, resin by methanol or isopropanol [11,12]. In this test process, a mobility parameter (R f ) for the fractionate is determined using a model, as shown in equation (1).…”

Section: Molecular Groups Of Asphaltmentioning

confidence: 99%

A Synthesis of Computational and Experimental Approaches of Evaluating Chemical, Physical, and Mechanistic Properties of Asphalt Binders

Hossain

2019

Advances in Civil Engineering

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Asphalt binder is a very complex chemical compound. Much work has been done to understand and model its chemical, morphological, rheological, and mechanical features. This paper synthesizes and presents findings from pertinent studies available in the public domain. Understanding of asphalt characteristics at the very finite level is the first critical step to develop a better macroscopic- or pavement-level performance model. This paper showcases a summary of current knowledge gained on (a) how chemical elemental compositions and molecular groups play critical roles in asphalt binder’s performance in pavement composites; (b) morphological properties and their relationships with the asphalt’s structural performance; and (c) mechanistic characteristics of asphalt binder’s at nanoscopic, mesoscopic, and microscopic levels, and how they are related to macroscopic- or pavement-level performance.

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