Effect of the reclaiming degree of catalytic pre-desulfurization recycled crumb rubber on the properties of modified asphalt
Source abstract
Abstract
The application of crumb rubber (CR) as an asphalt modifier in flexible pavements is an effective way to achieve sustainable utilisation. The performance of crumb rubber modified asphalt (CRMA) can be improved by pretreatment of CR to make it desulfurized to a certain extent. This study aims to determine the optimal regeneration degree of CR to obtain CRMA with better performance. Recycled crumb rubber (RCR) was prepared by catalytic regeneration at low temperatures and used to prepare recycled crumb rubber-modified asphalt (RCRMA). Furthermore, the characteristics of RCR with different regeneration degree and the performance of RCRMA were investigated to determine the reasonable range of regeneration degree. The results showed that solubility was a reliable indicator of the degree of regeneration of RCR and that the solubility of RCR was positively correlated with its regeneration degree. The higher the degree of RCR regeneration, the lower the molecular weight, the more uniform the distribution, and the larger the surface structure. The low-temperature performance, fatigue resistance, and construction workability of the RCRMA were better than those of the CRMA. When the solubility of RCR was greater than 30%, the compatibility and storage stability of RCRMA were significantly improved. As the solubility of RCR increases, the high-temperature performance of RCRMA decreases; however, as long as the solubility of RCR does not exceed 60%, the decrease in the high-temperature performance of RCRMA is very small. According to a comprehensive analysis, the solubility of RCR should be maintained at 30–60%. • A controllable CR chemical depolymerization method was proposed. • Investigations on RCR's regeneration properties and depolymerization mechanism were conducted. • The rheological properties and storage stability of RCR modified asphalts were investigated. • RCR can enhanced the perfpmance of asphalt.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Polymer Nanocomposites and Properties · Polymer composites and self-healing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (64)
Show source-provided references
1. Recycled tyre rubber modified bitumens for road asphalt mixtures: a literature review10.1016/j.conbuildmat.2013.09.007 ↗
2. Utilization of high contents of recycled tire crumb rubber in developing a modified-asphalt-rubber binder for road applications
3. Research on the pyrolysis process of crumb tire rubber in waste cooking oil10.1016/j.renene.2018.02.133 ↗
4. Laboratory investigation of the recycled asphalt concrete with stable crumb rubber asphalt binder10.1016/j.conbuildmat.2019.01.114 ↗
5. Current status and development of terminal blend tyre rubber modified asphalt10.1016/j.conbuildmat.2016.10.080 ↗
6. Review and comparison of methods to assess the storage stability of terminal blend rubberized asphalt binders10.1016/j.conbuildmat.2020.119586 ↗
7. Rheological properties and microscopic mechanism of waste cooking oil activated waste crumb rubber modified asphalt10.1016/j.jreng.2022.09.001 ↗
8. Internal de-crosslinking of scrap tire crumb rubber to improve compatibility of rubberized asphalt
9. Effect of different devulcanization agents on the mechano-chemical devulcanization process of waste tires
10. Unexpected toughening of poly(lactic acid) by microwave-assisted devulcanization of waste latex rubber10.1021/acsapm.2c01502 ↗
11. Effect of process variables on the chemical characteristics of crumb rubber desulfurized by waste cooking oil and its desulfurization mechanism10.1016/j.conbuildmat.2021.125361 ↗
12. Research on highly dissolved rubber asphalt prepared using a composite waste engine oil addition and microwave desulfurization method10.1016/j.conbuildmat.2021.122641 ↗
13. The preparation process, service performances and interaction mechanisms of crumb rubber modified asphalt (CRMA) by wet process: A comprehensive review10.1016/j.conbuildmat.2022.129168 ↗
14. Performance evaluation of desulfurized rubber asphalt based on rheological and environmental effects10.1061/(ASCE)MT.1943-5533.0002971 ↗
15. Study on the low-temperature pre-desulfurization of crumb rubber-modified asphalt10.3390/polym15102273 ↗
16. Effect of crumb rubber degradation on components distribution and rheological properties of Terminal Blend rubberized asphalt binder10.1016/j.conbuildmat.2017.03.229 ↗
17. Influence of swelling-degradation degree on rheological properties, thermal pyrolysis kinetics, and emission components of waste crumb rubber modified bitumen10.1016/j.conbuildmat.2022.127555 ↗
18. Properties of polystyrene grafted activated waste rubber powder (PS-ARP) composite SBS modified asphalt10.1016/j.conbuildmat.2019.117737 ↗
19. Effect of microwave-activated crumb rubber on reaction mechanism, rheological properties, thermal stability, and released volatiles of asphalt binder10.1016/j.jclepro.2019.119230 ↗
20. Improving the aging resistance of SBS modified asphalt with the addition of highly reclaimed rubber10.1016/j.conbuildmat.2017.03.242 ↗
21. Reaction mechanism and rheological properties of waste cooking oil pre-desulfurized crumb tire rubber/SBS composite modified asphalt10.1016/j.conbuildmat.2020.122083 ↗
22. Investigation of asphalt binder containing various crumb rubbers and asphalts10.1016/j.conbuildmat.2012.11.063 ↗
23. Phase structure characterization and compatibilization mechanism of epoxy asphalt modified by thermoplastic elastomer (SBS)10.1016/j.conbuildmat.2021.126262 ↗
24. Effect of nano silica and pretreated rubber on the properties of terminal blend crumb rubber modified asphalt10.1016/j.conbuildmat.2017.08.187 ↗
25. Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and Ni10.1016/j.apsusc.2010.10.051 ↗
26. Research progress and performance evaluation of crumb-rubber-modified asphalts and their mixtures10.1016/j.conbuildmat.2022.129687 ↗
27. Using DSR and MSCR tests to characterize high temperature performance of different rubber modified asphalt10.1016/j.conbuildmat.2016.10.010 ↗
28. Fatigue performance assessment of recycled tire rubber modified asphalt mixtures using viscoelastic continuum damage analysis and AASHTOWare pavement ME design10.1016/j.conbuildmat.2020.118658 ↗
29. Effectiveness of original additives in waste rubbers for revulcanization after reclamation with a low-temperature mechanochemical devulcanization method10.1016/j.jclepro.2021.126620 ↗
30. Characterization of crumb tire rubber lightly pyrolyzed in waste cooking oil and the properties of its modified bitumen10.1016/j.conbuildmat.2018.11.044 ↗
31. Ground tire rubber thermo-mechanically devulcanized in the presence of waste engine oil as asphalt modifier10.1016/j.conbuildmat.2019.06.162 ↗
32. Comparison of microscopic techniques to study the diversity of the bitumen microstructure10.1016/j.micron.2022.103294 ↗
33. Comparing effects of physisorption and chemisorption of bio-oil onto rubber particles in asphalt10.1016/j.jclepro.2020.123112 ↗
34. Chemical and microscopic investigation of co-pyrolysis of crumb tire rubber with waste cooking oil at mild temperature10.1016/j.wasman.2018.08.024 ↗
35. The continuous swelling-degradation behaviors and chemo-rheological properties of waste crumb rubber modified bitumen considering the effect of rubber size10.1016/j.conbuildmat.2021.124966 ↗
36. Microstructure and performance of crumb rubber modified asphalt10.1016/j.conbuildmat.2009.06.038 ↗
37. Performance of modified asphalt of rubber powder through tetraethyl orthosilicate (TEOS)10.1016/j.conbuildmat.2020.121032 ↗
38. Laboratory evaluation on high temperature viscosity and low temperature stiffness of asphalt binder with high percent scrap tire rubber10.1016/j.conbuildmat.2011.06.061 ↗
39. , A., Towards storage-stable high-content recycled tyre rubber modified bitumen10.1016/j.conbuildmat.2018.03.226 ↗
40. Roles of waste carbon fibers on the efficiency of multiple induction heating healing behavior in asphalt mixture for sustainable infrastructure10.1016/j.jclepro.2023.138694 ↗
41. A review on compatibility between crumb rubber and asphalt binder10.1016/j.conbuildmat.2021.123820 ↗
42. Compatibility and rheological characterization of asphalt modified with recycled rubber-plastic blends10.1016/j.conbuildmat.2020.121416 ↗
43. Composite asphalt modification with waste EPDM rubber and tire pyrolytic oil: rheological, chemical, and morphological evaluation10.1061/(ASCE)MT.1943-5533.0004468 ↗
44. Selective absorption of swelling rubber in hot and warm asphalt binder fractions10.1016/j.conbuildmat.2019.117727 ↗
45. M, Y. B.; Müller, A. J.; Rodriguez, Y, Use of rheological compatibility criteria to study SBS modified asphalts. Journal of Applied Polymer Science 2003, 90 (7), 1772-1782.10.1002/app.12764 ↗
46. Investigating the properties of rejuvenated asphalt with the modified rejuvenator prepared by waste cooking oil and waste tire crumb rubber10.1016/j.conbuildmat.2021.125692 ↗
47. Characterization of storage stability of EPDM rubberized asphalt with tire pyrolytic oil and sulfur10.1061/(ASCE)MT.1943-5533.0004716 ↗
48. The effect of oil sands de-oiled asphalt on rheological properties, compatibility and stability of asphalt binder10.1016/j.conbuildmat.2020.120594 ↗
49. Morphology of asphalts, asphalt fractions and model wax-doped asphalts studied by atomic force microscopy10.1080/10298436.2011.575942 ↗
50. Storage stability performance of composite modified asphalt with scrap non-tire automotive rubber, waste plastic pyrolytic oil and sulfur
51. Influence of crumb rubber particle size and SBS structure on properties of CR/SBS composite modified asphalt10.1016/j.conbuildmat.2019.117517 ↗
52. Property improvement of thermosetting natural rubber asphalt binder by mineral oil10.1016/j.jmrt.2023.05.134 ↗
53. Investigation of the rheological properties and storage stability of CR/SBS modified asphalt10.1016/j.conbuildmat.2014.10.022 ↗
54. Selective adsorption of bio-oils’ molecules onto rubber surface and its effects on stability of rubberized asphalt10.1016/j.jclepro.2019.119856 ↗
55. High temperature rheological characteristics of activated crumb rubber modified asphalts10.1016/j.conbuildmat.2018.10.223 ↗
56. Discontinuities in generalized thermo-viscoelasticity under four theories10.1080/014957390523598 ↗
57. Fractional thermoelasticity applications for porous asphaltic materials10.1007/s12182-016-0094-5 ↗
58. The relaxation effects of the volume properties of electrically conducting viscoelastic material10.1016/j.mseb.2006.01.020 ↗
59. Influence of high content crumb rubber and different preparation methods on properties of asphalt under different aging conditions: Chemical properties, rheological properties, and fatigue performance10.1016/j.conbuildmat.2022.126937 ↗
60. Development of a novel binder rejuvenator composed by waste cooking oil and crumb tire rubber10.1016/j.conbuildmat.2019.117621 ↗
61. The relaxation effects of the volume properties of viscoelastic material in generalized thermoelasticity10.1016/S0020-7225(03)00108-3 ↗
62. Fractional thermoelectric viscoelastic materials10.1002/app.35243 ↗
63. Study on the viscoelastic behaviour of the modified asphalt containing multi-walled carbon nanotubes (MWCNTs) and crumb rubber (CR)10.1016/j.conbuildmat.2021.125244 ↗
64. Upcycling waste phosphogypsum as an alternative filler for asphalt pavement10.1016/j.jclepro.2023.138332 ↗