Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model

Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Feng, Shuo [verfasserIn] Xiao, Huigang [verfasserIn] Liu, Min [verfasserIn] Zhang, Fengling [verfasserIn] Lu, Mengyuan [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	UHPC Bond shear strength Shear strength model Micro-bonding mechanism

Übergeordnetes Werk:	Enthalten in: Construction and building materials - Amsterdam [u.a.] : Elsevier Science, 1987, 342
Übergeordnetes Werk:	volume:342

DOI / URN:	10.1016/j.conbuildmat.2022.127919

Katalog-ID:	ELV008083584

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520			\|a Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength.
650		4	\|a UHPC
650		4	\|a Bond shear strength
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650		4	\|a Micro-bonding mechanism
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700	1		\|a Lu, Mengyuan \|e verfasserin \|4 aut
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publishDate	2022
allfields	10.1016/j.conbuildmat.2022.127919 doi (DE-627)ELV008083584 (ELSEVIER)S0950-0618(22)01591-4 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Feng, Shuo verfasserin aut Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength. UHPC Bond shear strength Shear strength model Micro-bonding mechanism Xiao, Huigang verfasserin aut Liu, Min verfasserin aut Zhang, Fengling verfasserin aut Lu, Mengyuan verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 342 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:342 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 342
spelling	10.1016/j.conbuildmat.2022.127919 doi (DE-627)ELV008083584 (ELSEVIER)S0950-0618(22)01591-4 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Feng, Shuo verfasserin aut Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength. UHPC Bond shear strength Shear strength model Micro-bonding mechanism Xiao, Huigang verfasserin aut Liu, Min verfasserin aut Zhang, Fengling verfasserin aut Lu, Mengyuan verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 342 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:342 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 342
allfields_unstemmed	10.1016/j.conbuildmat.2022.127919 doi (DE-627)ELV008083584 (ELSEVIER)S0950-0618(22)01591-4 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Feng, Shuo verfasserin aut Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength. UHPC Bond shear strength Shear strength model Micro-bonding mechanism Xiao, Huigang verfasserin aut Liu, Min verfasserin aut Zhang, Fengling verfasserin aut Lu, Mengyuan verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 342 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:342 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 342
allfieldsGer	10.1016/j.conbuildmat.2022.127919 doi (DE-627)ELV008083584 (ELSEVIER)S0950-0618(22)01591-4 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Feng, Shuo verfasserin aut Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength. UHPC Bond shear strength Shear strength model Micro-bonding mechanism Xiao, Huigang verfasserin aut Liu, Min verfasserin aut Zhang, Fengling verfasserin aut Lu, Mengyuan verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 342 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:342 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 342
allfieldsSound	10.1016/j.conbuildmat.2022.127919 doi (DE-627)ELV008083584 (ELSEVIER)S0950-0618(22)01591-4 DE-627 ger DE-627 rda eng 690 DE-600 56.45 bkl Feng, Shuo verfasserin aut Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength. UHPC Bond shear strength Shear strength model Micro-bonding mechanism Xiao, Huigang verfasserin aut Liu, Min verfasserin aut Zhang, Fengling verfasserin aut Lu, Mengyuan verfasserin aut Enthalten in Construction and building materials Amsterdam [u.a.] : Elsevier Science, 1987 342 Online-Ressource (DE-627)320423115 (DE-600)2002804-0 (DE-576)259271187 nnns volume:342 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 342
language	English
source	Enthalten in Construction and building materials 342 volume:342
sourceStr	Enthalten in Construction and building materials 342 volume:342
format_phy_str_mv	Article
bklname	Baustoffkunde
institution	findex.gbv.de
topic_facet	UHPC Bond shear strength Shear strength model Micro-bonding mechanism
dewey-raw	690
isfreeaccess_bool	false
container_title	Construction and building materials
authorswithroles_txt_mv	Feng, Shuo @@aut@@ Xiao, Huigang @@aut@@ Liu, Min @@aut@@ Zhang, Fengling @@aut@@ Lu, Mengyuan @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
hierarchy_top_id	320423115
dewey-sort	3690
id	ELV008083584
language_de	englisch
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However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. 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author	Feng, Shuo
spellingShingle	Feng, Shuo ddc 690 bkl 56.45 misc UHPC misc Bond shear strength misc Shear strength model misc Micro-bonding mechanism Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model
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topic_title	690 DE-600 56.45 bkl Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model UHPC Bond shear strength Shear strength model Micro-bonding mechanism
topic	ddc 690 bkl 56.45 misc UHPC misc Bond shear strength misc Shear strength model misc Micro-bonding mechanism
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title	Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model
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title_full	Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model
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title_sort	shear behaviour of interface between normal-strength concrete and uhpc: experiment and predictive model
title_auth	Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model
abstract	Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength.
abstractGer	Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength.
abstract_unstemmed	Ultra-high performance concrete (UHPC) has various excellent mechanical properties and durability which make it as a suitable repair material for bridge decks repair. However, the bond shear strength between UHPC and concrete substrate is still considered as knowledge gap in the literature. In this investigation, the bond shear properties of UHPC–NSC were systematically investigated using single side shear test, and the shear bond strength and bond failure mode were obtained. Different factors including surface roughness, steel fibre type, and substrate strength which affect the bond strength of UHPC–NSC were discussed. The results suggested that for the as cast substrate surface, bond failure occurred at the interface and the floating pulp layer adhered to UHPC. For specimens with a rough surface, the debonded interface showed that the coarse aggregate on the rough surface adhered to the UHPC. There was a linear relationship between the area of substrate adhered to the UHPC overlay and the bond shear strength. The substrate roughness has a significant influence on bond strength, while the steel fibre type has only a slight influence on bond strength. Bond strength mechanical model were built to predict the interfacial shear strength. The calculated results are in good agreement with the experimental results, indicating that the model can reliably predict the UHPC–NSC interface shear strength.
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title_short	Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model
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author2	Xiao, Huigang Liu, Min Zhang, Fengling Lu, Mengyuan
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doi_str	10.1016/j.conbuildmat.2022.127919
up_date	2024-07-06T18:28:58.446Z
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Shear behaviour of interface between normal-strength concrete and UHPC: Experiment and predictive model

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