Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica

The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Kai, Ming-Feng [verfasserIn] Sanchez, Florence [verfasserIn] Hou, Dong-Shuai [verfasserIn] Dai, Jian-Guo [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Interfacial bonding Proton exchange Interfacial transition zone Bond strength Interfacial fracture

Übergeordnetes Werk:	Enthalten in: Applied surface science - Amsterdam : Elsevier, 1985, 616
Übergeordnetes Werk:	volume:616

DOI / URN:	10.1016/j.apsusc.2023.156478

Katalog-ID:	ELV009196900

Internformat


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520			\|a The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica.
650		4	\|a Interfacial bonding
650		4	\|a Proton exchange
650		4	\|a Interfacial transition zone
650		4	\|a Bond strength
650		4	\|a Interfacial fracture
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700	1		\|a Hou, Dong-Shuai \|e verfasserin \|4 aut
700	1		\|a Dai, Jian-Guo \|e verfasserin \|4 aut
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936	b	k	\|a 52.78 \|j Oberflächentechnik \|j Wärmebehandlung \|q VZ
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publishDate	2023
allfields	10.1016/j.apsusc.2023.156478 doi (DE-627)ELV009196900 (ELSEVIER)S0169-4332(23)00154-X DE-627 ger DE-627 rda eng 670 530 660 VZ 33.68 bkl 35.18 bkl 52.78 bkl Kai, Ming-Feng verfasserin aut Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica. Interfacial bonding Proton exchange Interfacial transition zone Bond strength Interfacial fracture Sanchez, Florence verfasserin aut Hou, Dong-Shuai verfasserin aut Dai, Jian-Guo verfasserin aut Enthalten in Applied surface science Amsterdam : Elsevier, 1985 616 Online-Ressource (DE-627)312151128 (DE-600)2002520-8 (DE-576)094476985 nnns volume:616 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.68 Oberflächen Dünne Schichten Grenzflächen Physik VZ 35.18 Kolloidchemie Grenzflächenchemie VZ 52.78 Oberflächentechnik Wärmebehandlung VZ AR 616
spelling	10.1016/j.apsusc.2023.156478 doi (DE-627)ELV009196900 (ELSEVIER)S0169-4332(23)00154-X DE-627 ger DE-627 rda eng 670 530 660 VZ 33.68 bkl 35.18 bkl 52.78 bkl Kai, Ming-Feng verfasserin aut Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica. Interfacial bonding Proton exchange Interfacial transition zone Bond strength Interfacial fracture Sanchez, Florence verfasserin aut Hou, Dong-Shuai verfasserin aut Dai, Jian-Guo verfasserin aut Enthalten in Applied surface science Amsterdam : Elsevier, 1985 616 Online-Ressource (DE-627)312151128 (DE-600)2002520-8 (DE-576)094476985 nnns volume:616 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.68 Oberflächen Dünne Schichten Grenzflächen Physik VZ 35.18 Kolloidchemie Grenzflächenchemie VZ 52.78 Oberflächentechnik Wärmebehandlung VZ AR 616
allfields_unstemmed	10.1016/j.apsusc.2023.156478 doi (DE-627)ELV009196900 (ELSEVIER)S0169-4332(23)00154-X DE-627 ger DE-627 rda eng 670 530 660 VZ 33.68 bkl 35.18 bkl 52.78 bkl Kai, Ming-Feng verfasserin aut Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica. Interfacial bonding Proton exchange Interfacial transition zone Bond strength Interfacial fracture Sanchez, Florence verfasserin aut Hou, Dong-Shuai verfasserin aut Dai, Jian-Guo verfasserin aut Enthalten in Applied surface science Amsterdam : Elsevier, 1985 616 Online-Ressource (DE-627)312151128 (DE-600)2002520-8 (DE-576)094476985 nnns volume:616 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.68 Oberflächen Dünne Schichten Grenzflächen Physik VZ 35.18 Kolloidchemie Grenzflächenchemie VZ 52.78 Oberflächentechnik Wärmebehandlung VZ AR 616
allfieldsGer	10.1016/j.apsusc.2023.156478 doi (DE-627)ELV009196900 (ELSEVIER)S0169-4332(23)00154-X DE-627 ger DE-627 rda eng 670 530 660 VZ 33.68 bkl 35.18 bkl 52.78 bkl Kai, Ming-Feng verfasserin aut Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica. Interfacial bonding Proton exchange Interfacial transition zone Bond strength Interfacial fracture Sanchez, Florence verfasserin aut Hou, Dong-Shuai verfasserin aut Dai, Jian-Guo verfasserin aut Enthalten in Applied surface science Amsterdam : Elsevier, 1985 616 Online-Ressource (DE-627)312151128 (DE-600)2002520-8 (DE-576)094476985 nnns volume:616 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.68 Oberflächen Dünne Schichten Grenzflächen Physik VZ 35.18 Kolloidchemie Grenzflächenchemie VZ 52.78 Oberflächentechnik Wärmebehandlung VZ AR 616
allfieldsSound	10.1016/j.apsusc.2023.156478 doi (DE-627)ELV009196900 (ELSEVIER)S0169-4332(23)00154-X DE-627 ger DE-627 rda eng 670 530 660 VZ 33.68 bkl 35.18 bkl 52.78 bkl Kai, Ming-Feng verfasserin aut Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica 2023 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica. Interfacial bonding Proton exchange Interfacial transition zone Bond strength Interfacial fracture Sanchez, Florence verfasserin aut Hou, Dong-Shuai verfasserin aut Dai, Jian-Guo verfasserin aut Enthalten in Applied surface science Amsterdam : Elsevier, 1985 616 Online-Ressource (DE-627)312151128 (DE-600)2002520-8 (DE-576)094476985 nnns volume:616 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 33.68 Oberflächen Dünne Schichten Grenzflächen Physik VZ 35.18 Kolloidchemie Grenzflächenchemie VZ 52.78 Oberflächentechnik Wärmebehandlung VZ AR 616
language	English
source	Enthalten in Applied surface science 616 volume:616
sourceStr	Enthalten in Applied surface science 616 volume:616
format_phy_str_mv	Article
bklname	Oberflächen Dünne Schichten Grenzflächen Kolloidchemie Grenzflächenchemie Oberflächentechnik Wärmebehandlung
institution	findex.gbv.de
topic_facet	Interfacial bonding Proton exchange Interfacial transition zone Bond strength Interfacial fracture
dewey-raw	670
isfreeaccess_bool	false
container_title	Applied surface science
authorswithroles_txt_mv	Kai, Ming-Feng @@aut@@ Sanchez, Florence @@aut@@ Hou, Dong-Shuai @@aut@@ Dai, Jian-Guo @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	312151128
dewey-sort	3670
id	ELV009196900
language_de	englisch
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author	Kai, Ming-Feng
spellingShingle	Kai, Ming-Feng ddc 670 bkl 33.68 bkl 35.18 bkl 52.78 misc Interfacial bonding misc Proton exchange misc Interfacial transition zone misc Bond strength misc Interfacial fracture Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica
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topic_title	670 530 660 VZ 33.68 bkl 35.18 bkl 52.78 bkl Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica Interfacial bonding Proton exchange Interfacial transition zone Bond strength Interfacial fracture
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title	Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica
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title_full	Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica
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title_sort	nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica
title_auth	Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica
abstract	The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica.
abstractGer	The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica.
abstract_unstemmed	The interfacial characteristics between cement paste and silica are far from being fully understood, especially from the nanoscale perspective. Herein, molecular models were used to provide comprehensive insights into the interfacial characteristics between calcium silicate hydrate (C-S-H, the main binding phase of cement paste) and silica. Chemically, various types of bonds existed at the interface, including H-bonds and Ca–O bonds, and proton (H+) exchange occurred between C-S-H and silica. An increase in the water content of C-S-H could depress the deprotonation of the Si-OH groups on the silica surface. Structurally, an atomic-level interfacial transition zone (ITZ) with a low density was identified, which was attributed to the rich presence of –OH groups at the C-S-H–silica interface. The water molecules and calcium ions in the ITZ diffused faster than those in the bulk C-S-H. Mechanically, the interfacial bond strength was inversely related to the water content of C-S-H, with the higher water content reducing the interfacial interactions. Under loading, the interfacial fracture underwent three stages: crack propagation, atomic chain bridging (responsible for the interfacial residual strength), and complete failure. These atomic-level findings provide hitherto unknown mechanisms of the interfacial interactions between cement paste and silica.
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title_short	Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica
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Nanoscale insights into the interfacial characteristics between calcium silicate hydrate and silica

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