An environmental friendly anti-ageing additive to bitumen

Gaweł, Irena; Czechowski, Franciszek; Kosno, Jacek

doi:10.1016/j.conbuildmat.2016.02.004

Cited by 40 publications

(18 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, in the studies of changes in Molecular Weight Distribution (MWD) upon oxidation by air analyzed with Gel Permeation Chromatography, it is well documented that the MWD becomes bimodal. While this may be due to the agglomeration of molecules with increased polarity, it is thought to also indicate that oligomerization is 3 and Cu (BFeCl 3 Cu) (up) and bitumen with Cu (BCu) (down), during exposure to air at 163°C measured by ATR-FT-IR as compared to the spectra at the previous time step occurring in the bitumen upon oxidation parallel to a settled uptake of singular molecules of oxygen into the mass [38][39][40]. However, examining the step differential spectra we clearly see that the oxidation of bitumen is a stepwise reaction (Fig.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

The oxidation of bitumen witnessed in-situ by infrared spectroscopy

2017

View full text Add to dashboard Cite

During the production and recycling of asphalt concrete, bitumen in contact with inorganic particles is exposed to air at high temperatures. As a result an oxidation of bitumen, also known as aging, occurs. The reaction between bitumen and air at 163°C was studied insitu with and without the presence of inorganic impurities by means of fourier transform infrared spectroscopy in the attenuated reflectance mode. This oxidation was discovered to be a step-wise reaction facilitated by the oxidation of thiols and creation of peroxides within the system. The rate of reaction was demonstrated to depend on the type of impurity present, of which iron (III) chloride was the strongest catalyst. It was further demonstrated that the oxidation reaction is inhibited by the adsorption of thiol species present in the system on copper particles. Combining copper with the iron (III) chloride-containing system also resulted in the inhibition of signal increase in the sulfoxide region of the spectra. The results of this preliminary research on the bitumen oxidation reaction presented are proposed for further research regarding control of aging of asphalt concrete, especially during the recycling works.

show abstract

Section: Resultsmentioning

confidence: 99%

“…This phenomenon has been observed [38][39][40], but suggested as originating from unspecified form of elimination reaction releasing a water molecule [46]. A dimerization of carboxylic acids was proposed for a model.…”

Section: The Progress Of the Oxidation Reaction In Homogenous Bitumenmentioning

confidence: 99%

The oxidation of bitumen witnessed in-situ by infrared spectroscopy

2017

View full text Add to dashboard Cite

show abstract

“…Stiffness aging index (SAI) can be adopted to evaluate the properties of TMA to resist PAV aging. The index can be defined as following [36]:…”

Section: Aging Resistance Of Tmamentioning

confidence: 99%

Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline

Dong

Wang

et al. 2019

Materials

View full text Add to dashboard Cite

Tourmaline modified asphalt (TMA) binders were prepared with different modifier types and contents in this research. The routine properties, rheological properties, and aging resistance were evaluated to research the function of tourmaline on the performances of asphalt binders. Test results show that the storage stability can be improved significantly by the smaller particle size and negative-ion treated surface of tourmaline modifier. It indicates that the stiffness and rutting-resistance of TMA binder can be enhanced significantly, and the elastic component of the viscoelastic characteristic can also be increased. Moreover, the complex viscosity and the Zero Shear Viscosity (ZSV) values of tourmaline modified asphalt are increased within the test frequency range, which results in the improvement of deformation resistance of tourmaline modified asphalt. When mixed with asphalt, the tourmaline modifier maintains a two-phase structure, which results in the good rheological property for tourmaline modified asphalt.Materials 2020, 13, 69 2 of 13 powder on the performance of asphalt binders were studied [22]. The influence of calcium carbide modifier on the performances of pavement was emphatically studied [23,24]. The effects of tourmaline on asphalt density, dynamic stability, and flow value were analyzed, and the micro-mechanism of tourmaline modified asphalt was also studied [25][26][27][28]. Organic tourmaline exhibits excellent storage stability due to its reduced surface polarity, which pioneer a new way for the development of mineral and copolymer composites [29]. Çelikbilek et al. evaluated the performances of Tourmaline modified asphalt (TMA) mixture by the means of Grey multi-criteria evaluation model. It was indicated that the model had good reliability and practicability in TMA mixture, which can provide a new theoretical basis for the widely application of TMA [30].The utilization of tourmaline in relative fields has become more and more popular. However, the comprehensive research on the properties of TMA and its mixture is still limited. The main work of this research is to study the properties of TMA under different modifier types and contents. The influences of tourmaline on storage stability, rheological characteristics, aging resistance, and microscope structure of TMA are all analyzed by various experiment methods.

show abstract

“…Several organic and inorganic compounds have been tested to improve the aging resistance of bitumen and, hence, its durability in the asphalt mix [6][7][8][9][10][11]. However, a few studies deal with the application of natural additives or byproducts rich in antioxidants as free radical scavengers to protect bituminous materials from oxidation phenomena [12][13][14]. The application of cheap and environmental friendly anti-ageing additives to virgin bitumen would enjoy the double advantage of using sustainable and renewable compounds and at same time reducing the carbon footprint of the products of asphalt industries according to the circular economy's recommendations.…”

Section: Introductionmentioning

confidence: 99%

Effects of Natural Antioxidant Agents on the Bitumen Aging Process: An EPR and Rheological Investigation

Rossi¹,

Caputo²,

Ashimova³

et al. 2018

Preprint

View full text Add to dashboard Cite

Bitumen aging is the major factor which contributes to the deterioration of the road pavement. Oxidation and volatilization are generally considered as the most important phenomena affecting aging in asphalt paving mixtures. The present study was carried to investigate whether various antioxidants provided by natural resources such as phospholipids, ascorbic acid as well as lignin from rice husk, could be used to reduce age hardening in asphalt binders. A selected bituminous material was modified by adding 2 % w/w of the anti-aging natural additives and subjected to accelerated oxidative aging regimes according to the Rolling Thin Film Oven Test (RTFOT) method. The effects of aging were evaluated based on changes in sol-gel transition temperature of modified bitumens measured through Dynamic Shear Rheology (DSR). Moreover, changes of Electron Paramagnetic Resonance (EPR) spectra were monitored on the bituminous fractions asphaltene and maltene separated by solvent extraction upon oxidative aging. The phospholipids-treated binder exhibited the highest resistance to oxidation and the lowest age-hardening effect compared to the other tested anti-oxidants. The combination of EPR and DSR techniques represents a promising method for elucidating the changes in associated complex properties of bitumen fractions promoted by addition of free radical scavengers borrowed by green resources.

show abstract

An environmental friendly anti-ageing additive to bitumen

Cited by 40 publications

References 6 publications

The oxidation of bitumen witnessed in-situ by infrared spectroscopy

The oxidation of bitumen witnessed in-situ by infrared spectroscopy

Research on the Rheological Characteristics and Aging Resistance of Asphalt Modified with Tourmaline

Effects of Natural Antioxidant Agents on the Bitumen Aging Process: An EPR and Rheological Investigation

Contact Info

Product

Resources

About