Thermal characteristics of bitumen pyrolysis

Zhao, Houyin; Cao, Yan; Sit, Song P.; Lineberry, Quentin; Pan, Wei‐Ping

doi:10.1007/s10973-011-1590-x

Cited by 50 publications

(19 citation statements)

References 14 publications

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“…One-stage decomposition of ER has also been reported [16]. For asphalt, its TGA curve can also be separated into two stages: breaking of weak chemical bonds and generation of small gaseous molecules from 250°C to 400°C in the first stage and later decomposition of large molecules into smaller molecules from 400°C to 550°C [16,36,81,118,119] (see Figure 14). If modifiers like [36] and brucite [13] are added, a third stage often appeared (see also Figure 14).…”

Section: Ermogravimetric Analysis (Tga)mentioning

confidence: 85%

Application of Epoxy-Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Chen

Hossiney

Yang

et al. 2021

Advances in Materials Science and Engineering

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One of the failure mechanisms associated with asphalt paving layers, especially on steel deck bridges, is large permanent deformation, which adversely affects its long-term performance in service. Thus, epoxy resin was introduced in asphalt paving industry to tackle permanent deformation of asphalt mixtures due to its thermosetting nature. In this review, epoxy resin as a dominant component of the epoxy-asphalt composite system was first considered, followed by a discussion on its curing methods and curing mechanism. Furthermore, the physicochemical property and mechanical performance of epoxy asphalt and epoxy asphalt mixture were thoroughly examined. Crosslink density of epoxy asphalt dictates its viscosity and thus the allowable construction time. Phase separation and dispersion of asphalt particles in the epoxy matrix was observed for epoxy-asphalt composite, and it showed superior elastic behavior and deformation resistance capability when compared with conventional asphalt materials. Furthermore, epoxy asphalt mixture exhibited significantly higher compressive strength, much better rutting resistance, and superior durability and water resistance properties. However, its low-temperature cracking resistance was slightly compromised.

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Section: Ermogravimetric Analysis (Tga)mentioning

confidence: 85%

Application of Epoxy-Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Chen

Hossiney

Yang

et al. 2021

Advances in Materials Science and Engineering

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“…11) shows the presence of saturated monocarboxylic fatty acids (as pointed out by GC-MS in other samples), a series of alkanes and alkenes (C10-C25), naphthalene and benzene. This result could suggest the presence of bituminous material (also known as "asphalt" (Connan et al 2006;Burger et al 2016;Zhao et al 2012)) associated with the aromatic fraction observed. Specifically, in the sample were identified naphthalene and benzene which can be considered some of the natural biomarker of asphalt (Languri et al 2002).…”

Section: As Itmentioning

confidence: 95%

Life after death: a physicochemical study of materials used by the ancient Maya in human bone ointments

Izzo

Rigon

Pascual

et al. 2021

Archaeol Anthropol Sci

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Ancient Maya believed in life after death. They used to prepare dead bodies during burial ceremonies whose purpose was to celebrate the dead and to help them passing through the way from earthly life to the beyond one. Bodies preparation included coloured scented body ointment application, with a deep symbolic connotation and probably also a conservative purpose. The aim of this research was to characterize pigments and binders used by ancient Maya in the preparation of body ointments used to paint human bones. Emblematic painted bone samples from Xcambó (Maya archaeological site located in the municipality of Dzemul, in the Mexican state of Yucatán) were investigated through a non-destructive and micro-destructive analytical techniques. Results pointed out the presence of two mainly red pigments, i.e. red ochre and cinnabar, as already observed in other Maya painted bones. The new insight of the research is the identification of the organic compounds used as binding media in the ointments: a mixture of vegetable drying oil (probably Chia seed oil) mixed with an aromatic compound (bitumen). This knowledge, together with that obtained in the last decades, is important to reconstruct the cultural habitat and social customs of this pre-Hispanic civilization and transfer them to today's context.

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“…It is expected that weak links, such as heteroatomic chemical bonds within the chain, are cut first in the low-activation-energy region. Subsequently, dissociation of the side chains or random scission reactions requiring more energy take place, and finally, the backbone chains are broken as the reaction progresses to completion [42,43].…”

Section: Isoconversional Analysismentioning

confidence: 99%

Kinetic analysis using thermogravimetric analysis for nonisothermal pyrolysis of vacuum residue

Shin

Nho

et al. 2016

J Therm Anal Calorim

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Pyrolysis is a relatively simple upgrading process that can produce light oil from unconventional oil and heavy residue. For effective utilization of pyrolysis processes, it is important to understand its kinetic parameters. In this study, the nonisothermal pyrolysis of vacuum residue (VR) was analyzed using a thermogravimetric analyzer and the activation energy of the VR pyrolysis reaction was estimated by several theoretical methods. It was found that isoconversional methods were more suitable than nonisoconversional methods for analyzing complex pyrolysis reaction of VR. The Friedman method, a differential isoconversional method, is thought to be the most appropriate among the various methods tested because it can describe the complexity of the pyrolysis reaction of VR and there is no need for information of exact reaction model and mathematical assumptions for temperature integral, which can raise systematic errors in the kinetic analysis. Finally, the kinetic parameters of VR pyrolysis were determined based on the results of Friedman analysis and distributed activation energy model (DAEM), and VR pyrolysis behavior was well expressed with the kinetic parameters obtained from DAEM analysis.

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Thermal characteristics of bitumen pyrolysis

Cited by 50 publications

References 14 publications

Application of Epoxy-Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Application of Epoxy-Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Life after death: a physicochemical study of materials used by the ancient Maya in human bone ointments

Kinetic analysis using thermogravimetric analysis for nonisothermal pyrolysis of vacuum residue

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