Rheological properties and anti-aging performance of ...
Xu et al. [26] investigated the rheological properties and anti-aging performance of asphalt binders modified with wood lignin. The result indicates that the lignin increases rutting resistance ...
Aging mechanism of SBS modified asphalt based on chemical ...
The aging of asphalt binder is an oxidative chemical process that will lead to the formation of carbonyl compounds and sulfoxides. Then, the stiffness, adhesion and flexibility properties of binder will be affected [1]. Consequently, aging of asphalt binder has a direct impact on road performance.
Evaluation of Anti-Aging Performance of Biochar Modified ...
that the anti-aging performance of biochar modified asphalt binder decreased with the decrease in temperature, and control of the biochar content could ensure good low-temperature performance of the modified asphalt binder after aging. FTIR spectra analysis showed that biochar in modified asphalt binder is physically blended with asphalt binder.
Pavement Performance and Anti-Aging Property of Microscale ...
Microscale flyash/SBS composite modified asphalts (CMA) were prepared by melt blending. Rolling thin film oven test (RTFOT) was employed to study the anti-aging property. Both flyash and SBS disperse homogeneously in the base asphalt, which lead to an improvement in terms of toughness, strength, and thermal stability. Moreover, microscale flyash plays a significant role in the CMA.
Experimental Study on Asphalt Composite UV Absorption Anti ...
Wengang Zhang. Jun Shi. Zhirong Jia. Butylated hydroxytoluene (BHT) and titanium dioxide (TiO2) were used to improve the UV anti-aging performance of TPS modified bitumen in this article, and UV ...
Long-term aging performance study of asphalt with ...
According to experimental results of aging process influence on storage modulus G', A3, A5 and A6 asphalts had worse anti-aging performance than A1, A2 and A4. Meanwhile based on test results of aging process influence on loss modulus G", A1, A2 and A4 asphalts had worse anti-aging performance than A3, A5 and A6 asphalt.
Performance Evaluation of SBS Modified Asphalt with ...
The DSR analysis indicates that anti-aging additives can enhance the elastic behavior and improve the thermal stability of SBS modified asphalt. Improvement in the thermal-oxidative aging properties of SBS modified asphalt can be achieved with the three different anti-aging additives, but the UV aging properties of anti-aging additive/SBS ...
Rheological properties and anti-aging performance of ...
Therefore, the anti-aging effect of lignin should be studied using more accurate observation that is based on change of chemical structures of asphalt binder. 2. Objective and scope. The main objective of this study was to characterize rheological properties and performance of lignin modified asphalt binder using different laboratory tests.
Aging Behavior Analysis of Asphalt based on Nonlinear ...
： In order to study aging behavior and anti-aging performance of asphalt,aging tests were carried out with rolling thin film oven test(RTFOT) and oven aging ...
Frontiers | Aging Properties and Mechanism of Microwave ...
Through penetration, softening point, ductility, viscosity and DSR test, the high and low temperature performance and temperature sensitivity of MA, CRMA and MACRMA before and after aging were studied. These tests results revealed that microwave treatment can improve the anti-rutting ability and the anti-aging performance of rubber asphalt.
Laboratory testing on the anti-aging performance of ...
The base asphalt binder used in this study is 70# asphalt, and APAO is a good anti-aging agent used to improve the anti-aging performance of 70# asphalt. In order to make APAO more widely used in field application to improve the anti-aging performance of asphalt pavement, the further study or design of APAO modified asphalt binder is suggested ...
Study on anti-aged durability of HMA based on inherent and ...
The water stability performance and durability of anti-aging is as follows: IV > Ⅲ > Ⅱ > Ⅰ. Originality/value The research results have important theoretical and guiding significance for exploring the change of intrinsic properties and improved properties of asphalt and asphalt mixture in the aging process and revealing the anti-aging ...
Effect of multi-scale nanocomposites on performance of ...
Additionally, the optimal combination of 1% organic expanded vermiculite and 3% nano-zinc oxide demonstrated the best anti-aging, temperature and water damage resistance performance. Overall, the authors noted that the study would enhance the performance of asphalt binders and its mixtures.
Evaluation Method and Parameters of Anti-Aging Properties ...
According to aging simulation results indoor, the anti-performance differences of five asphalts and the aging state of recycled asphalt from the field pavement are analyzed. The results and analysis indicate that the evaluation method and parameters can be used to distinguish aging performance of different asphalts. Aging degree can help us ...
Investigating the pavement performance and aging ...
RTFOTs for evaluating the anti-aging performance of modified bio-asphalt binders. The mass loss, 25°C residual penetration ratio and 5°C ductility after aging, obtained via …
Analysis of anti-aging performance of coffee ground ...
The change of the performance indexes of the modified asphalt after aging was larger than that of the base asphalt, indicating that the coffee grounds carbon improved the anti-aging property of the asphalt. As the content of coffee grounds carbon increased before aging, tan δ also increased, which proved that the high temperature stability of ...
Laboratory and field evaluation of sodium stearate ...
Laboratory and field evaluation of sodium stearate organically modified LDHs effect on the anti aging performance of asphalt mixtures Construction and Building Materials ( IF 6.141) Pub Date :, DOI: 10.1016/j.conbuildmat.2018.09.021
Evaluation of Anti-Aging Performance of Biochar Modified ...
As a renewable biomass resource, biochar is new to modify or replace asphalt binder in pavement engineering. This paper focuses on the effect of biochar on the anti-aging performance of asphalt binder. The short- and long-term aging properties of biochar modified asphalt binder were investigated using dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests.
Effect of styrene-butadiene-styrene copolymer on the aging ...
The performance of asphalt pavement is seriously affected by aging of asphalt binder, so indices are expected which can not only evaluate aging resistance of asphalt binder but also indicate ...
Effect of styrene-butadiene-styrene copolymer on the aging ...
To reveal the potential influence of styrene-butadiene-styrene (SBS) polymer modification on the anti-aging performance of asphalt, and its mechanism, we explored the aging characteristics of base asphalt and SBS-modified asphalt by reaction force field (ReaxFF) and classical molecular dynamics simulations. The results illustrate that the SBS asphalt is more susceptible to oxidative aging …
Evaluation of rheological behaviors and anti-aging ...
The results show that the low-viscosity asphalt can increase viscous components and restore the workability of aged asphalt. However, the addition of low-viscosity asphalt weakens the high-temperature properties, temperature sensitivity and anti-aging performance of aged asphalt.
Rheological and anti-aging performance of SBS modified ...
As for photo oxidation aging, it is mainly referred to performance degradation of asphalt subject to ultraviolet irradiation . In order to improve aging resistance of asphalt, various anti-aging agents, such as antioxidants, light-shield agents and ultraviolet absorbers, have been developed,,, .
Laboratory investigation on effects of organic ...
In this paper, organic montmorillonite (OMMT) was added into crumb rubber modified asphalt (CRMA) to improve its high temperature performance, anti-aging performance and storage stability. The effects of different OMMT content on properties of CRMA were studied. The rutting factor obtained by dynamic shear rheological (DSR) test was adopted to evaluate the high-temperature performance…
Influence of Composite Antioxidants to Asphalt Anti-Aging ...
The durability of the asphalt is of great significance to its pavement performance, so more and more effort has been addressed on improving the asphalt anti-aging performance. In this work, the effects of antioxidant type and formula on the asphalt anti-aging performance were investigated through various measurements before and after aging process including needle penetration, softening point ...
Studying Anti-Ageing Performance of Road Asphalt Based on ...
The research objects of the present study were equivalent-penetration (high-temperature performance) and equivalent-ductility (low-temperature performance) asphalt specimens, and the anti-ageing ...
Effect of Nano Hydrotalcite on the Aging Resistance of a ...
After aging, the control asphalt mixture presented 3% and 4% increase in ITS dry and ITS wet, respectively. In the case of the modified asphalt mixture, after aging the ITS dry and ITS wet increased by 12% and 6%, respectively. The effect of LTOA aging in the ITS of these SMA 8 seems less intensive if compared with conventional asphalt concrete ...
Performance of Modified Asphalt Aging under Ultraviolet ...
To compare asphalt aging under indoor and outdoor environments, ultraviolet radiation emulation aging tests were conducted. From these tests, this paper discusses the difference in the influence of ultraviolet photo-oxidation and thermal oxidation on asphalt performance. In addition, anti-aging agents were suggested as a solution to asphalt aging.
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Anti aging Performance of Recycled Engine Oil Bottom Rejuvenated Asphalt: ： ：: DOI： 103969/j.issn.1007 9629202101029: :
Performance and Mechanism of Asphalt Modified by Buton ...
It was observed that the two kinds of BRA-SBR modified asphalt had preferable anti-crack capacity at low temperatures than the BRA modified asphalt. Compared with latex SBR, the powder SBR significantly improved the high-temperature performance, and the anti-aging capacity was stable.
Asphalt Testing: Anti-Aging Additives Versus Rejuvenators
Grover responded, "The anti-aging additive will make any asphalt more resistant to aging, including asphalts containing RAP. The improvement will be relative to the asphalt, and the starting chemistry can potentially influence the extent of improvement yielded from the additive chemistry.".