Effect of organo-montmorillonite on aging properties of asphalt

Yu, Jianying; Feng, Pengcheng; Zhang, Henglong; Wu, Shaopeng

doi:10.1016/j.conbuildmat.2009.01.007

Cited by 215 publications

(70 citation statements)

References 18 publications

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“…Penetration is a useful property to evaluate the consistency of asphalt at intermediate service temperatures [33]. It is the depth in units of 1/10 mm that a standard needle with a load of 100 g penetrates into the asphalt vertically in a time period of 5 s. In this study, penetration of modified asphalt was tested using penetration test instrument (DF-4, Beijing Zhonghangkegong Instrument Co., Ltd., Beijing, China) at 25 • C according to ASTM D5 before and after TFOT.…”

Section: Characterization Methodsmentioning

confidence: 99%

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Short-Term Aging Effect on Properties of Sustainable Pavement Asphalts Modified by Waste Rubber and Diatomite

Liu

Jiao

et al. 2017

Sustainability

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Waste utilization has gained more and more interest. In this study, crumb rubber and diatomite were used to modify asphalt binder and the short-term aging effects on the properties of modified asphalts were evaluated. Three kinds of modified asphalt were prepared; they are diatomite modified asphalt (DA), crumb rubber modified asphalt (RA), and diatomite and crumb rubber compound modified asphalt (DRA). Thin film oven test (TFOT) was used to simulate short-term aging in the laboratory. Penetration, softening points, ductility, viscosity, elastic recovery, low temperature creep, and rutting susceptibility were tested and analyzed before and after TFOT. The results indicated that the softening point, viscosity, elastic recovery, creep stiffness, and G*/sinδ of DA, RA, and DRA are all linearly increased with increasing age, while the penetration and ductility are linearly decreased with increasing age. High temperature properties of asphalt are obviously improved by the addition of crumb rubber. Low temperature properties of asphalt are affected more seriously by the addition of diatomite. DRA could combine the advantages of diatomite and crumb rubber and achieve better performance in short-term aging resistance than DA and RA.

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Section: Characterization Methodsmentioning

confidence: 99%

“…As shown in Table 6, the PRP of DA, RA, and DRA are 72.79%, 75.71%, and 84.54%, respectively. Yu et al [33] indicated that the higher PRP is, the less aging has occured. Therefore, it can be concluded that DRA has better anti-aging properties than DA and RA.…”

Section: Penetrationmentioning

confidence: 99%

Short-Term Aging Effect on Properties of Sustainable Pavement Asphalts Modified by Waste Rubber and Diatomite

Liu

Jiao

et al. 2017

Sustainability

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“…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). Research on the reduction of carbonyl and sulfoxide groups in aging asphalts utilizing sodium borohydribe (NaBH 4 ) has been carried out as well indicating improvement on oxidation resistance (47).…”

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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“…Inorganic nano-materials, such as layered double hydroxides (LDHs) [8], montmorillonite [9,10], and carbon black [11,12], have a layered structure and are excellent barriers for oxygen, which can be used in improving the anti-aging performance of asphalt. However, the compatibility between inorganic materials and organic asphalt is poor, making it difficult for inorganic materials to disperse well in the asphalt; because of the van der Waals forces or the electrostatic forces, they tend to aggregation easily [13].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Aging Resistance of Graphene Oxide Modified Asphalt

Wu¹,

Zhao²,

Li³

et al. 2017

Applied Sciences

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Graphene oxide (GO) has a unique layered structure with excellent gas and liquid blocking properties. It is widely used in many areas, such as gas sensors, carbon-based electronics, impermeable membranes, and polymeric composite materials. In order to evaluate whether GO (1% and 3% by weight of asphalt) can improve the aging resistance performance of the asphalt, 80/100 penetration grade asphalt (90 A) and styrene-butadiene-styrene modified asphalt (SBS MA) were used to prepare the GO modified asphalt by the melt blending method. The surface morphology of the GO was analyzed by scanning electron microscope (SEM). The UV aging test was conducted to simulate the aging during the service period. After UV aging test, the physical performances of GO-modified asphalts were tested, and the I C=O and I S=O increments were tested by Fourier transform infrared spectroscopy (FTIR) to evaluate the aging resistance performance of the GO modified asphalt. In addition, the rheological properties of GO modified asphalts were studied using a dynamic shear rheometer (DSR). The SEM analysis indicated that the GO exhibits many shared edges, and no agglomeration phenomenon was found. With respect to the physical performance test, the FTIR and the DSR results show that GO can improve the UV aging resistance performance of 90 A and SBS MA. In addition, the analysis indicated that the improvement effect of 3% GO is better than the 1% GO. The testing on the rheological properties of the modified asphalt indicated that the GO can also improve the thermo-oxidative aging resistance performance of asphalt.

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Effect of organo-montmorillonite on aging properties of asphalt

Cited by 215 publications

References 18 publications

Short-Term Aging Effect on Properties of Sustainable Pavement Asphalts Modified by Waste Rubber and Diatomite

Short-Term Aging Effect on Properties of Sustainable Pavement Asphalts Modified by Waste Rubber and Diatomite

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

Evaluation of Aging Resistance of Graphene Oxide Modified Asphalt

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