Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders
Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and b...
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| Autor*in: |
Abdelaziz, Amal [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Anmerkung: |
© RILEM 2022 |
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| Übergeordnetes Werk: |
Enthalten in: Materials and structures - Cachan : RILEM Publications SARL, 1968, 55(2022), 3 vom: Apr. |
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| Übergeordnetes Werk: |
volume:55 ; year:2022 ; number:3 ; month:04 |
| Links: |
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| DOI / URN: |
10.1617/s11527-022-01946-4 |
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SPR046658858 |
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| 520 | |a Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. | ||
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| 650 | 4 | |a Recycling agents |7 (dpeaa)DE-He213 | |
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| 650 | 4 | |a Reclaimed asphalt pavement (RAP) |7 (dpeaa)DE-He213 | |
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| 700 | 1 | |a Epps Martin, Amy |4 aut | |
| 700 | 1 | |a Arámbula-Mercado, Edith |4 aut | |
| 700 | 1 | |a Bajaj, Akash |4 aut | |
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10.1617/s11527-022-01946-4 doi (DE-627)SPR046658858 (SPR)s11527-022-01946-4-e DE-627 ger DE-627 rakwb eng Abdelaziz, Amal verfasserin (orcid)0000-0003-3233-4593 aut Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. Asphalt (dpeaa)DE-He213 Recycling agents (dpeaa)DE-He213 Glass transition (dpeaa)DE-He213 Microstructure (dpeaa)DE-He213 Reclaimed asphalt pavement (RAP) (dpeaa)DE-He213 Masad, Eyad aut Epps Martin, Amy aut Arámbula-Mercado, Edith aut Bajaj, Akash aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 3 vom: Apr. (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:3 month:04 https://dx.doi.org/10.1617/s11527-022-01946-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 3 04 |
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10.1617/s11527-022-01946-4 doi (DE-627)SPR046658858 (SPR)s11527-022-01946-4-e DE-627 ger DE-627 rakwb eng Abdelaziz, Amal verfasserin (orcid)0000-0003-3233-4593 aut Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. Asphalt (dpeaa)DE-He213 Recycling agents (dpeaa)DE-He213 Glass transition (dpeaa)DE-He213 Microstructure (dpeaa)DE-He213 Reclaimed asphalt pavement (RAP) (dpeaa)DE-He213 Masad, Eyad aut Epps Martin, Amy aut Arámbula-Mercado, Edith aut Bajaj, Akash aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 3 vom: Apr. (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:3 month:04 https://dx.doi.org/10.1617/s11527-022-01946-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 3 04 |
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10.1617/s11527-022-01946-4 doi (DE-627)SPR046658858 (SPR)s11527-022-01946-4-e DE-627 ger DE-627 rakwb eng Abdelaziz, Amal verfasserin (orcid)0000-0003-3233-4593 aut Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. Asphalt (dpeaa)DE-He213 Recycling agents (dpeaa)DE-He213 Glass transition (dpeaa)DE-He213 Microstructure (dpeaa)DE-He213 Reclaimed asphalt pavement (RAP) (dpeaa)DE-He213 Masad, Eyad aut Epps Martin, Amy aut Arámbula-Mercado, Edith aut Bajaj, Akash aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 3 vom: Apr. (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:3 month:04 https://dx.doi.org/10.1617/s11527-022-01946-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 3 04 |
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10.1617/s11527-022-01946-4 doi (DE-627)SPR046658858 (SPR)s11527-022-01946-4-e DE-627 ger DE-627 rakwb eng Abdelaziz, Amal verfasserin (orcid)0000-0003-3233-4593 aut Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. Asphalt (dpeaa)DE-He213 Recycling agents (dpeaa)DE-He213 Glass transition (dpeaa)DE-He213 Microstructure (dpeaa)DE-He213 Reclaimed asphalt pavement (RAP) (dpeaa)DE-He213 Masad, Eyad aut Epps Martin, Amy aut Arámbula-Mercado, Edith aut Bajaj, Akash aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 3 vom: Apr. (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:3 month:04 https://dx.doi.org/10.1617/s11527-022-01946-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 3 04 |
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10.1617/s11527-022-01946-4 doi (DE-627)SPR046658858 (SPR)s11527-022-01946-4-e DE-627 ger DE-627 rakwb eng Abdelaziz, Amal verfasserin (orcid)0000-0003-3233-4593 aut Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. Asphalt (dpeaa)DE-He213 Recycling agents (dpeaa)DE-He213 Glass transition (dpeaa)DE-He213 Microstructure (dpeaa)DE-He213 Reclaimed asphalt pavement (RAP) (dpeaa)DE-He213 Masad, Eyad aut Epps Martin, Amy aut Arámbula-Mercado, Edith aut Bajaj, Akash aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 3 vom: Apr. (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:3 month:04 https://dx.doi.org/10.1617/s11527-022-01946-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 3 04 |
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Enthalten in Materials and structures 55(2022), 3 vom: Apr. volume:55 year:2022 number:3 month:04 |
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Abdelaziz, Amal @@aut@@ Masad, Eyad @@aut@@ Epps Martin, Amy @@aut@@ Arámbula-Mercado, Edith @@aut@@ Bajaj, Akash @@aut@@ |
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The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. 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Abdelaziz, Amal |
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Abdelaziz, Amal misc Asphalt misc Recycling agents misc Glass transition misc Microstructure misc Reclaimed asphalt pavement (RAP) Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders |
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Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders Asphalt (dpeaa)DE-He213 Recycling agents (dpeaa)DE-He213 Glass transition (dpeaa)DE-He213 Microstructure (dpeaa)DE-He213 Reclaimed asphalt pavement (RAP) (dpeaa)DE-He213 |
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misc Asphalt misc Recycling agents misc Glass transition misc Microstructure misc Reclaimed asphalt pavement (RAP) |
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Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders |
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Abdelaziz, Amal |
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Materials and structures |
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Abdelaziz, Amal Masad, Eyad Epps Martin, Amy Arámbula-Mercado, Edith Bajaj, Akash |
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thermal, microscopic, and rheological characterization of rejuvenated asphalt binders |
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Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders |
| abstract |
Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. © RILEM 2022 |
| abstractGer |
Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. © RILEM 2022 |
| abstract_unstemmed |
Abstract Transportation agencies are increasingly incorporating reclaimed asphalt pavement (RAP) in asphalt mixtures due to the scarcity and increased costs of virgin resources. The usage of RAP brings both economic as well as environmental benefits. Nonetheless, because RAP is an aged, stiff, and brittle material, utilizing it in large quantities can make the pavement more prone to cracking and reduce its service life. Recycling agents (rejuvenators) are additives typically applied to partially restore the properties of aged asphalt binders and facilitate using higher RAP contents. While considerable effort has been made on evaluating the influences of recycling agents on asphalt binders’ performance, the rejuvenation mechanisms of recycling agents have not yet been thoroughly examined. This study's objective was to evaluate the influence of various types of recycling agents on the properties of asphalt binder blends containing 50% RAP binder. The oxidative stability of the recycling agents and rejuvenated binder blends was evaluated utilizing thermogravimetric analysis (TGA). The glass transition region and the compatibility of the binder blends were assessed using differential scanning calorimetry (DSC). Finally, atomic force microscopy (AFM) experiments were conducted to study the mechanisms of the recycling agents at the nanoscale level. The results revealed a relationship between the phases detected in the microstructure and the physical characteristics of the binder blends. DSC analysis showed that after the inclusion of recycling agents, the breadth and temperature of the glass transition region were reduced, indicating the formation of a less brittle material. AFM observations showed that the dispersion of the polar molecular associations in the RAP binder correlated with the changes in the glass transition region as measured using the DSC. The study's findings were used to characterize the effectiveness of recycling agents based on the thermal, microstructural, and rheological properties of rejuvenated binder blends to help explain the mechanisms of recycling agents. © RILEM 2022 |
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Thermal, microscopic, and rheological characterization of rejuvenated asphalt binders |
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Masad, Eyad Epps Martin, Amy Arámbula-Mercado, Edith Bajaj, Akash |
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10.1617/s11527-022-01946-4 |
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2024-07-03T23:46:33.871Z |
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| score |
7.4006615 |