A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out
Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debondi...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Geng, Y. [verfasserIn] Leung, C. K. Y. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1996 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Journal of materials science - Dordrecht [u.a.] : Springer Science + Business Media B.V, 1966, 31(1996), 5 vom: 01. März, Seite 1285-1294 |
|---|---|
| Übergeordnetes Werk: |
volume:31 ; year:1996 ; number:5 ; day:01 ; month:03 ; pages:1285-1294 |
| Links: |
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| DOI / URN: |
10.1007/BF00353108 |
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| Katalog-ID: |
SPR013793748 |
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| 245 | 1 | 2 | |a A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out |
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| 520 | |a Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. | ||
| 650 | 4 | |a Fibre Surface |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Interfacial Friction |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Interfacial Transition Zone |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Lateral Compression |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Nylon Fibre |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Leung, C. K. Y. |e verfasserin |4 aut | |
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1996 |
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51.00 |
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1996 |
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10.1007/BF00353108 doi (DE-627)SPR013793748 (SPR)BF00353108-e DE-627 ger DE-627 rakwb eng 670 ASE 51.00 bkl Geng, Y. verfasserin aut A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. Fibre Surface (dpeaa)DE-He213 Interfacial Friction (dpeaa)DE-He213 Interfacial Transition Zone (dpeaa)DE-He213 Lateral Compression (dpeaa)DE-He213 Nylon Fibre (dpeaa)DE-He213 Leung, C. K. Y. verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1966 31(1996), 5 vom: 01. März, Seite 1285-1294 (DE-627)315293969 (DE-600)2015305-3 1573-4803 nnns volume:31 year:1996 number:5 day:01 month:03 pages:1285-1294 https://dx.doi.org/10.1007/BF00353108 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_121 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_206 GBV_ILN_224 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_647 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_2018 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_2043 GBV_ILN_2044 GBV_ILN_2048 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_2116 GBV_ILN_2118 GBV_ILN_2119 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_2158 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2193 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_2808 GBV_ILN_4012 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_4277 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_4346 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_4753 51.00 ASE AR 31 1996 5 01 03 1285-1294 |
| spelling |
10.1007/BF00353108 doi (DE-627)SPR013793748 (SPR)BF00353108-e DE-627 ger DE-627 rakwb eng 670 ASE 51.00 bkl Geng, Y. verfasserin aut A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. Fibre Surface (dpeaa)DE-He213 Interfacial Friction (dpeaa)DE-He213 Interfacial Transition Zone (dpeaa)DE-He213 Lateral Compression (dpeaa)DE-He213 Nylon Fibre (dpeaa)DE-He213 Leung, C. K. Y. verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1966 31(1996), 5 vom: 01. März, Seite 1285-1294 (DE-627)315293969 (DE-600)2015305-3 1573-4803 nnns volume:31 year:1996 number:5 day:01 month:03 pages:1285-1294 https://dx.doi.org/10.1007/BF00353108 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_121 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_206 GBV_ILN_224 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_647 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_2018 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_2043 GBV_ILN_2044 GBV_ILN_2048 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_2116 GBV_ILN_2118 GBV_ILN_2119 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_2158 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2193 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_2808 GBV_ILN_4012 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_4277 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_4346 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_4753 51.00 ASE AR 31 1996 5 01 03 1285-1294 |
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10.1007/BF00353108 doi (DE-627)SPR013793748 (SPR)BF00353108-e DE-627 ger DE-627 rakwb eng 670 ASE 51.00 bkl Geng, Y. verfasserin aut A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. Fibre Surface (dpeaa)DE-He213 Interfacial Friction (dpeaa)DE-He213 Interfacial Transition Zone (dpeaa)DE-He213 Lateral Compression (dpeaa)DE-He213 Nylon Fibre (dpeaa)DE-He213 Leung, C. K. Y. verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1966 31(1996), 5 vom: 01. März, Seite 1285-1294 (DE-627)315293969 (DE-600)2015305-3 1573-4803 nnns volume:31 year:1996 number:5 day:01 month:03 pages:1285-1294 https://dx.doi.org/10.1007/BF00353108 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_121 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_206 GBV_ILN_224 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_647 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_2018 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_2043 GBV_ILN_2044 GBV_ILN_2048 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_2116 GBV_ILN_2118 GBV_ILN_2119 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_2158 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2193 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_2808 GBV_ILN_4012 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_4277 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_4346 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_4753 51.00 ASE AR 31 1996 5 01 03 1285-1294 |
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10.1007/BF00353108 doi (DE-627)SPR013793748 (SPR)BF00353108-e DE-627 ger DE-627 rakwb eng 670 ASE 51.00 bkl Geng, Y. verfasserin aut A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. Fibre Surface (dpeaa)DE-He213 Interfacial Friction (dpeaa)DE-He213 Interfacial Transition Zone (dpeaa)DE-He213 Lateral Compression (dpeaa)DE-He213 Nylon Fibre (dpeaa)DE-He213 Leung, C. K. Y. verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1966 31(1996), 5 vom: 01. März, Seite 1285-1294 (DE-627)315293969 (DE-600)2015305-3 1573-4803 nnns volume:31 year:1996 number:5 day:01 month:03 pages:1285-1294 https://dx.doi.org/10.1007/BF00353108 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_121 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_206 GBV_ILN_224 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_647 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_2018 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_2043 GBV_ILN_2044 GBV_ILN_2048 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_2116 GBV_ILN_2118 GBV_ILN_2119 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_2158 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2193 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_2808 GBV_ILN_4012 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_4277 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_4346 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_4753 51.00 ASE AR 31 1996 5 01 03 1285-1294 |
| allfieldsSound |
10.1007/BF00353108 doi (DE-627)SPR013793748 (SPR)BF00353108-e DE-627 ger DE-627 rakwb eng 670 ASE 51.00 bkl Geng, Y. verfasserin aut A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. Fibre Surface (dpeaa)DE-He213 Interfacial Friction (dpeaa)DE-He213 Interfacial Transition Zone (dpeaa)DE-He213 Lateral Compression (dpeaa)DE-He213 Nylon Fibre (dpeaa)DE-He213 Leung, C. K. Y. verfasserin aut Enthalten in Journal of materials science Dordrecht [u.a.] : Springer Science + Business Media B.V, 1966 31(1996), 5 vom: 01. März, Seite 1285-1294 (DE-627)315293969 (DE-600)2015305-3 1573-4803 nnns volume:31 year:1996 number:5 day:01 month:03 pages:1285-1294 https://dx.doi.org/10.1007/BF00353108 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_121 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_206 GBV_ILN_224 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_602 GBV_ILN_647 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_2018 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_2043 GBV_ILN_2044 GBV_ILN_2048 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_2116 GBV_ILN_2118 GBV_ILN_2119 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_2158 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2193 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_2808 GBV_ILN_4012 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_4277 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_4346 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_4753 51.00 ASE AR 31 1996 5 01 03 1285-1294 |
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Enthalten in Journal of materials science 31(1996), 5 vom: 01. März, Seite 1285-1294 volume:31 year:1996 number:5 day:01 month:03 pages:1285-1294 |
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The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Fibre Surface</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Interfacial Friction</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Interfacial Transition Zone</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Lateral Compression</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Nylon Fibre</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Leung, C. K. 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|
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Geng, Y. |
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Geng, Y. ddc 670 bkl 51.00 misc Fibre Surface misc Interfacial Friction misc Interfacial Transition Zone misc Lateral Compression misc Nylon Fibre A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out |
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670 ASE 51.00 bkl A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out Fibre Surface (dpeaa)DE-He213 Interfacial Friction (dpeaa)DE-He213 Interfacial Transition Zone (dpeaa)DE-He213 Lateral Compression (dpeaa)DE-He213 Nylon Fibre (dpeaa)DE-He213 |
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ddc 670 bkl 51.00 misc Fibre Surface misc Interfacial Friction misc Interfacial Transition Zone misc Lateral Compression misc Nylon Fibre |
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Geng, Y. |
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microstructural study of fibre/mortar interfaces during fibre debonding and pull-out |
| title_auth |
A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out |
| abstract |
Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. |
| abstractGer |
Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. |
| abstract_unstemmed |
Abstract Attempts were made to connect the change in interfacial properties during fibre pull-out in cementitious material to the microstructural features of the interface. The microstructural features of fibre (steel, nylon and polypropylene)/mortar interfaces were examined during the fibre debonding and pull-out process. Because fibre pull-out was found to be sensitive to lateral compression, microscopic studies were carried out on fibres pulled out with and without lateral compression. SEM and energy-dispersive X-ray (EDX) analyses were performed at four different stages: (a) before debonding; (b) immediately after debonding; (c) at small sliding distance; and (d) at large sliding distance. For the steel fibre/mortar interface, it was found that the mortar surface (interfacial transition zone) was subjected to abrasion, while the steel surface was subjected to plastic deformation. EDX analysis on the mortar interface showed that the ratio of calcium/silicon count first increases within a short sliding distance and decreases thereafter, indicating a process of CH layer abrasion and C-S-H layer exposure. The rapid post-peak drop of the pull-out force at the beginning of sliding is due to the “grinding” effect, which leads to crushing and abrasion of the CH crystals and a reduction of asperity on the mortar surface. The grinding and abrasion effect becomes more significant with the application of lateral compression, which results in more rapid drop of the pullout force. For the nylon and polypropylene fibre/mortar interfaces, the fibre surface peels and the mortar surface experiences very little damage. Nylon fibre surface swells and is peeled with short whiskers on the surface, leading to significant increase in interfacial friction causing the post-debonding pull-out force to increase. The polypropylene fibre surface is peeled and plowed with long whiskers and long scratch lines which also leads to an increase in interfacial friction. On applying lateral compression to the mortar during fibre pull-out, the abrasion and peeling effects are more severe. With lateral compression, holes may form on the polypropylene surface over a longer sliding distance. The ratio of calcium/silicon count on the mortar surface by EDX does not show obvious trends with sliding distance indicating that the mortar surface experiences very little damage. |
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A microstructural study of fibre/mortar interfaces during fibre debonding and pull-out |
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| score |
7.401534 |