The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design
The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mix...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Ferreira, Wellington L.G. [verfasserIn] Castelo Branco, Verônica T.F. [verfasserIn] Vasconcelos, Kamilla [verfasserIn] Bhasin, Amit [verfasserIn] Sreeram, Anand [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Construction and building materials - Amsterdam [u.a.] : Elsevier Science, 1987, 300 |
|---|---|
| Übergeordnetes Werk: |
volume:300 |
| DOI / URN: |
10.1016/j.conbuildmat.2021.124260 |
|---|
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| 245 | 1 | 0 | |a The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design |
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| 520 | |a The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. | ||
| 650 | 4 | |a Bitumen aging | |
| 650 | 4 | |a Binder extraction | |
| 650 | 4 | |a Binder heterogeneity | |
| 650 | 4 | |a Binder activation | |
| 650 | 4 | |a RAP | |
| 700 | 1 | |a Castelo Branco, Verônica T.F. |e verfasserin |4 aut | |
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| 700 | 1 | |a Sreeram, Anand |e verfasserin |4 aut | |
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10.1016/j.conbuildmat.2021.124260 doi (DE-627)ELV006473911 (ELSEVIER)S0950-0618(21)02019-5 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Ferreira, Wellington L.G. verfasserin aut The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. Bitumen aging Binder extraction Binder heterogeneity Binder activation RAP Castelo Branco, Verônica T.F. verfasserin aut Vasconcelos, Kamilla verfasserin aut Bhasin, Amit verfasserin aut Sreeram, Anand verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 300 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:300 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 56.45 Baustoffkunde AR 300 |
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10.1016/j.conbuildmat.2021.124260 doi (DE-627)ELV006473911 (ELSEVIER)S0950-0618(21)02019-5 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Ferreira, Wellington L.G. verfasserin aut The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. Bitumen aging Binder extraction Binder heterogeneity Binder activation RAP Castelo Branco, Verônica T.F. verfasserin aut Vasconcelos, Kamilla verfasserin aut Bhasin, Amit verfasserin aut Sreeram, Anand verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 300 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:300 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 56.45 Baustoffkunde AR 300 |
| allfields_unstemmed |
10.1016/j.conbuildmat.2021.124260 doi (DE-627)ELV006473911 (ELSEVIER)S0950-0618(21)02019-5 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Ferreira, Wellington L.G. verfasserin aut The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. Bitumen aging Binder extraction Binder heterogeneity Binder activation RAP Castelo Branco, Verônica T.F. verfasserin aut Vasconcelos, Kamilla verfasserin aut Bhasin, Amit verfasserin aut Sreeram, Anand verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 300 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:300 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 56.45 Baustoffkunde AR 300 |
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10.1016/j.conbuildmat.2021.124260 doi (DE-627)ELV006473911 (ELSEVIER)S0950-0618(21)02019-5 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Ferreira, Wellington L.G. verfasserin aut The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. Bitumen aging Binder extraction Binder heterogeneity Binder activation RAP Castelo Branco, Verônica T.F. verfasserin aut Vasconcelos, Kamilla verfasserin aut Bhasin, Amit verfasserin aut Sreeram, Anand verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 300 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:300 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 56.45 Baustoffkunde AR 300 |
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10.1016/j.conbuildmat.2021.124260 doi (DE-627)ELV006473911 (ELSEVIER)S0950-0618(21)02019-5 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Ferreira, Wellington L.G. verfasserin aut The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. Bitumen aging Binder extraction Binder heterogeneity Binder activation RAP Castelo Branco, Verônica T.F. verfasserin aut Vasconcelos, Kamilla verfasserin aut Bhasin, Amit verfasserin aut Sreeram, Anand verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 300 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:300 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 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_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 56.45 Baustoffkunde AR 300 |
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690 DE-600 56.45 bkl The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design Bitumen aging Binder extraction Binder heterogeneity Binder activation RAP |
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The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design |
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The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design |
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Ferreira, Wellington L.G. |
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Ferreira, Wellington L.G. Castelo Branco, Verônica T.F. Vasconcelos, Kamilla Bhasin, Amit Sreeram, Anand |
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the impact of aging heterogeneities within rap binder on recycled asphalt mixture design |
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The impact of aging heterogeneities within RAP binder on recycled asphalt mixture design |
| abstract |
The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. |
| abstractGer |
The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. |
| abstract_unstemmed |
The degree of binder activation in reclaimed asphalt pavement (RAP) is a critical aspect that should be considered in the design of recycled asphalt mixtures. It is widely believed that binder from RAP is less than 100% activated, which implies that part of the RAP binder will be inactive in the mixing process. It is important to quantitatively assess whether there is any significant difference between the active and the inactive binder as typical recycled mixture design insinuates 100% binder activation and complete homogenization of the virgin and RAP binder. The objective of this study is to evaluate aging heterogeneities within RAP binder as an imperative step to improve the design of recycled asphalt mixtures. Stages of binder extraction were performed on six RAP materials to artificially activate different RAP binder layers. After each extraction, the binder recovered was evaluated in terms of its rheological properties, polarity-based fractions, and Fourier transform infrared spectroscopy. Based on the results, an asphalt mix design was simulated using different RAP percentages considering the impact of RAP binder aging heterogeneities. Overall, the analysis implied that it may not be a realistic assumption to consider full RAP binder homogeneity. Based on the simulation performed, blending charts used to design recycled asphalt mixtures should be ideally based on the active RAP binder properties instead of the properties of the RAP binder after complete binder extraction. This would facilitate in choosing the correct virgin binder when the partial RAP binder activation scenario is considered. |
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