Laboratory evaluation of antioxidants for asphalt binders

Apeagyei, Alex K.

doi:10.1016/j.conbuildmat.2010.06.058

Cited by 151 publications

(66 citation statements)

References 3 publications

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“…In this study, lead antioxidant appears to be more effective than zinc. Furthermore, combination of furfural and dilaurylthiodipropionate could further improve the oxidative aging resistance at low and high temperatures (45). Also, introduction of montmorillonite appeared to improve the physico-mechanical properties of AB against oxidative aging (46).…”

Section: Anti-aging Technologies 31 Anti-oxidantsmentioning

confidence: 99%

Synthesis of Asphalt Binder Aging and the State of the Art of Antiaging Technologies

Apostolidis

Liu

Kasbergen

et al. 2017

Transportation Research Record

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Abstract:Aging is the accumulation process of diverse detrimental changes in molecular structures with advancing age. Resistance to aging is termed durability. Complex molecular systems such as asphalt binder need to be protected against aging. In this paper, a state-ofthe-art review of anti-aging technologies used to prohibit or to rejuvenate the aged asphaltic materials is provided. The kinetics of molecular structures during aging and the group of molecules affected mainly are discussed. The latest developments on anti-oxidation and rejuvenation technologies are given as well showing the impact of anti-aging technologies for the asphalt binder. INTRODUCTIONThe transportation industry consumes approximately 32.6% of the total energy produced in the European Union and almost 28% in the United States. In parallel with the increasing cost and the strong global demand for low prices of the paving materials and operations, the rapid aging of asphalt pavements due to the aggressive environmental conditions is becoming a pragmatic concern for the whole transportation industry. Avoiding the aging of asphalt binder or preventing the undesirable effects of ultimate degradation of asphalt mixes after certain time are among the major topics in which governmental authorities and infrastructure contractors have focused. Strategies, such as preventive maintenance techniques and reconstructive treatments of asphalt pavements, have been deployed in the last years to deal with the aging phenomena of asphaltic materials. Also, the utilization of additives as the countermeasure to prohibit aging of asphaltic materials (i.e., anti-oxidants) and to restore materials' characteristics (i.e., rejuvenators) shows significant benefits in these efforts. Asphalt binder (AB) is composed of an extremely large number of different types of organic molecules ranging from paraffins to alkyl polyaromatics containing heteroatoms of nitrogen (≤ 2%), oxygen (≤ 2%), sulphur (≤ 6%) and traces of metals such as vanadium and nickel. These molecules are separated in categories based on the chemical reactivity and the polarity of organic molecules. The dispersion of polar organic molecules in a medium of less polar molecules and their interaction are highly associated with the performance-related properties of ABs and their susceptibility under oxidation. When the material is oxidized, the state of molecular dispersion within the binder alters and new polar molecules are produced.Several studies have reported on the oxidation chemistry of AB, the main factors influencing aging and how aging can be addressed using chemical additives and anti-aging technologies. In this paper, focus was given to combine information of the most valuable researches which were validated for several times for the aged ABs and the anti-aging technologies. The current and concise state-of-the-art review on aging and anti-aging is provided with highlighting the chemistry of AB and the chemical interaction of anti-aging additives on them.

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Section: Anti-aging Technologies 31 Anti-oxidantsmentioning

confidence: 99%

Synthesis of Asphalt Binder Aging and the State of the Art of Antiaging Technologies

Apostolidis

Liu

Kasbergen

et al. 2017

Transportation Research Record

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“…Ouyang et al (2006) concluded that zinc dialkyldithiophosphate could improve the aging resistance of asphalt by retarding the oxidation of asphalt through the inhibition of peroxides and radical scavenging. Apeagyei (2011) found that a combination of furfural and dilaurylthiodipropionate could improve the oxidative aging resistance of asphalt remarkably. Yamaguchi et al (2005) found carbon black could protect the asphalt from photodegradation caused by UV radiation.…”

Section: Introductionmentioning

confidence: 98%

The Aging Resistance of Asphalt Containing a Compound of LDHs and Antioxidant

Zhao

et al. 2015

Petroleum Science and Technology

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Effects of layered double hydroxides (LDHs), antioxidant (Irganox 1010) and their compounds on physical and rheological properties and chemical compositions of asphalt were investigated to evaluate the antiaging performance. Results indicate that Irganox 1010 modified asphalt shows good thermooxidative aging resistance, LDHs modified asphalt shows good ultraviolet (UV) aging resistance, while the compound consisting of LDHs and Irganox 1010 modified asphalt exhibits excellent resistance to both thermo-oxidative aging and UV aging. Furthermore, changes of chemical compositions of asphalt show that Irganox 1010 peptizes the asphaltenes, and the compound of LDHs and Irganox 1010 exhibits the most effective inhibition of gelatinization of asphalt binder during aging process.

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“…To reduce the deterioration of bitumen properties as much as possible and thereby to improve the properties of HMA mixture, the following additives of bitumen are used: antioxidants (Apeagyei 2011), modifiers (Haddadi et al 2008), and adhesion enhancers. One of the prime roles of a bitumen modifier is to increase the resistance of the asphalt to permanent deformation at high road temperatures without adversely affecting the properties of bitumen or asphalt at other temperatures.…”

Section: Introductionmentioning

confidence: 99%

Dependences of Sma Mixture and Its Bituminous Binder Properties on Bitumen Batching System, Mixing Time and Temperature on Asphalt Mixing Plant

Bražiūnas

Sivilevičius

Virbickas³

2013

Journal of Civil Engineering and Management

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Bitumen holds the aggregate in hot mix asphalt (HMA). Without asphalt binder, HMA would simply be crushed stone or gravel. A bitumen batching system (BBS) is comprised of bitumen storage, transportation, weighing and discharge equipment in an asphalt mixing plant (AMP). The function of the equipment is to batch the binder heated up to working temperature and to discharge it into a mixer in batches. In the entire system, the binder is exposed to high temperature and oxygen. Bitumen is slowly oxidized when it is in contact with oxygen. The degree of oxidation is highly dependent on temperature, time and thickness of a bitumen film. This article models the key factors influencing on the dynamics of bitumen oxidation in BBS equipment. Stone mastic asphalt (SMA) mixture was produced from the same materials according to the same job-mix formula (JMF) in neighbouring batch type AMP by changing the mixing time of materials from 20 to 60 s. Bitumen binder was separated from the taken SMA samples and its gradation was identified. Thus, Marshall specimens were produced and tested. Penetration Pen 25 of bitumen binder recovered in rotary evaporator, softening point T sp was determined and penetration index I p was calculated. The presented findings of experimental investigation show that the properties of bitumen binder in BBS working at two different technologies changed inconsistently. Due to gravitation, the bitumen intensively flowing into a mixer (BBS1) is impacted by oxidation more than the bitumen batched by a high-pressure pump (BBS2).Keywords: bitumen; hot mix asphalt (HMA); stone mastic asphalt (SMA); bitumen batching system (BBS); job-mix formula (JMF); oxidation, short-term ageing; rheology; penetration; viscosity; asphalt mixing plant (AMP).Reference to this paper should be made as follows: Bražiūnas, J.; Sivilevičius, H.; Virbickas, R. 2013. Dependences of SMA mixture and its bituminous binder properties on bitumen batching system, mixing time and temperature on asphalt mixing plant, Journal of Civil Engineering and Management 19(6): 862-872. http://dx.. Research interests: flexible pavement life-cycle, hot mix asphalt mixture production technology, application of statistical and quality control methods, recycling asphalt pavement technologies and design, decision-making and expert systems theory.Romualdas VIRBICKAS. Quality Control manager of JSC "Fegda", Vilnius. Research interests: research and application of new technologies of roads, urban streets and airport pavements construction, design of roads, urban streets and airport pavements, project and structure inspection, maintenance inspection of roads and urban streets. 872 J. Bražiūnas et al. Dependences of SMA mixture and its bituminous binder properties on bitumen batching system ... Downloaded by [Tufts University] at 12:01 04 November 2014

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Laboratory evaluation of antioxidants for asphalt binders

Cited by 151 publications

References 3 publications

Synthesis of Asphalt Binder Aging and the State of the Art of Antiaging Technologies

Synthesis of Asphalt Binder Aging and the State of the Art of Antiaging Technologies

The Aging Resistance of Asphalt Containing a Compound of LDHs and Antioxidant

Dependences of Sma Mixture and Its Bituminous Binder Properties on Bitumen Batching System, Mixing Time and Temperature on Asphalt Mixing Plant

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