Physicochemical investigation of Portland cement pastes prepared and cured with seawater
Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing w...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zhang, Yangyang [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Anmerkung: |
© RILEM 2022 |
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| Übergeordnetes Werk: |
Enthalten in: Materials and structures - Cachan : RILEM Publications SARL, 1968, 55(2022), 6 vom: 23. Juni |
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| Übergeordnetes Werk: |
volume:55 ; year:2022 ; number:6 ; day:23 ; month:06 |
| Links: |
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| DOI / URN: |
10.1617/s11527-022-01991-z |
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| Katalog-ID: |
SPR047385553 |
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| 245 | 1 | 0 | |a Physicochemical investigation of Portland cement pastes prepared and cured with seawater |
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| 520 | |a Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. | ||
| 650 | 4 | |a Seawater |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Quantitative characterization |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Chemical evolution |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Physical change |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Sun, Yanjie |4 aut | |
| 700 | 1 | |a Shen, Peiliang |4 aut | |
| 700 | 1 | |a Lu, Jianxin |4 aut | |
| 700 | 1 | |a Cai, Yamei |4 aut | |
| 700 | 1 | |a Poon, Chi Sun |4 aut | |
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10.1617/s11527-022-01991-z doi (DE-627)SPR047385553 (SPR)s11527-022-01991-z-e DE-627 ger DE-627 rakwb eng Zhang, Yangyang verfasserin aut Physicochemical investigation of Portland cement pastes prepared and cured with seawater 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. Seawater (dpeaa)DE-He213 Quantitative characterization (dpeaa)DE-He213 Chemical evolution (dpeaa)DE-He213 Physical change (dpeaa)DE-He213 Sun, Yanjie aut Shen, Peiliang aut Lu, Jianxin aut Cai, Yamei aut Poon, Chi Sun aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 6 vom: 23. Juni (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:6 day:23 month:06 https://dx.doi.org/10.1617/s11527-022-01991-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 6 23 06 |
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10.1617/s11527-022-01991-z doi (DE-627)SPR047385553 (SPR)s11527-022-01991-z-e DE-627 ger DE-627 rakwb eng Zhang, Yangyang verfasserin aut Physicochemical investigation of Portland cement pastes prepared and cured with seawater 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. Seawater (dpeaa)DE-He213 Quantitative characterization (dpeaa)DE-He213 Chemical evolution (dpeaa)DE-He213 Physical change (dpeaa)DE-He213 Sun, Yanjie aut Shen, Peiliang aut Lu, Jianxin aut Cai, Yamei aut Poon, Chi Sun aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 6 vom: 23. Juni (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:6 day:23 month:06 https://dx.doi.org/10.1617/s11527-022-01991-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 6 23 06 |
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10.1617/s11527-022-01991-z doi (DE-627)SPR047385553 (SPR)s11527-022-01991-z-e DE-627 ger DE-627 rakwb eng Zhang, Yangyang verfasserin aut Physicochemical investigation of Portland cement pastes prepared and cured with seawater 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. Seawater (dpeaa)DE-He213 Quantitative characterization (dpeaa)DE-He213 Chemical evolution (dpeaa)DE-He213 Physical change (dpeaa)DE-He213 Sun, Yanjie aut Shen, Peiliang aut Lu, Jianxin aut Cai, Yamei aut Poon, Chi Sun aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 6 vom: 23. Juni (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:6 day:23 month:06 https://dx.doi.org/10.1617/s11527-022-01991-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 6 23 06 |
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10.1617/s11527-022-01991-z doi (DE-627)SPR047385553 (SPR)s11527-022-01991-z-e DE-627 ger DE-627 rakwb eng Zhang, Yangyang verfasserin aut Physicochemical investigation of Portland cement pastes prepared and cured with seawater 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. Seawater (dpeaa)DE-He213 Quantitative characterization (dpeaa)DE-He213 Chemical evolution (dpeaa)DE-He213 Physical change (dpeaa)DE-He213 Sun, Yanjie aut Shen, Peiliang aut Lu, Jianxin aut Cai, Yamei aut Poon, Chi Sun aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 6 vom: 23. Juni (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:6 day:23 month:06 https://dx.doi.org/10.1617/s11527-022-01991-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 6 23 06 |
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10.1617/s11527-022-01991-z doi (DE-627)SPR047385553 (SPR)s11527-022-01991-z-e DE-627 ger DE-627 rakwb eng Zhang, Yangyang verfasserin aut Physicochemical investigation of Portland cement pastes prepared and cured with seawater 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © RILEM 2022 Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. Seawater (dpeaa)DE-He213 Quantitative characterization (dpeaa)DE-He213 Chemical evolution (dpeaa)DE-He213 Physical change (dpeaa)DE-He213 Sun, Yanjie aut Shen, Peiliang aut Lu, Jianxin aut Cai, Yamei aut Poon, Chi Sun aut Enthalten in Materials and structures Cachan : RILEM Publications SARL, 1968 55(2022), 6 vom: 23. Juni (DE-627)356252612 (DE-600)2091922-0 1871-6873 nnns volume:55 year:2022 number:6 day:23 month:06 https://dx.doi.org/10.1617/s11527-022-01991-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 55 2022 6 23 06 |
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Zhang, Yangyang @@aut@@ Sun, Yanjie @@aut@@ Shen, Peiliang @@aut@@ Lu, Jianxin @@aut@@ Cai, Yamei @@aut@@ Poon, Chi Sun @@aut@@ |
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To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. 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Zhang, Yangyang |
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Zhang, Yangyang misc Seawater misc Quantitative characterization misc Chemical evolution misc Physical change Physicochemical investigation of Portland cement pastes prepared and cured with seawater |
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Physicochemical investigation of Portland cement pastes prepared and cured with seawater Seawater (dpeaa)DE-He213 Quantitative characterization (dpeaa)DE-He213 Chemical evolution (dpeaa)DE-He213 Physical change (dpeaa)DE-He213 |
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Physicochemical investigation of Portland cement pastes prepared and cured with seawater |
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Materials and structures |
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Zhang, Yangyang Sun, Yanjie Shen, Peiliang Lu, Jianxin Cai, Yamei Poon, Chi Sun |
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physicochemical investigation of portland cement pastes prepared and cured with seawater |
| title_auth |
Physicochemical investigation of Portland cement pastes prepared and cured with seawater |
| abstract |
Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. © RILEM 2022 |
| abstractGer |
Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. © RILEM 2022 |
| abstract_unstemmed |
Abstract The direct use of both seawater and sea sand in concrete production has been becoming attractive for some marine and coastal engineering where the availabilities of freshwater and river sand are limited. To further expand the use of seawater (e.g., using seawater as both mixing and curing water), this work provided fundamental research regarding the effects of using seawater as the mixing and curing water on the physicochemical properties of Portland cement pastes. The sub-samples at different depths of the seawater mixing and curing samples were extracted and separately analyzed. The chemical changes were quantitatively investigated, and the relation between the physical behaviors and the chemical changes was studied. The results showed that in the outer region of the samples, the ettringite content was significantly increased, but the content of Friedel’s salt was slightly reduced. Moreover, a large amount of calcium hydroxide was dissolved, but correspondingly, magnesium hydroxide (MH) crystals with various particle sizes were formed. Also, the sodium ions in the seawater were incorporated into the structure of calcium silicate hydrate gel, resulting in the formation of silica dimers with a shorter silica chain and the increase of nanopore volume (increasing by 22% in the inner region and 36% in the outer region). In addition, seawater increased the ion transport rate, but the blocking effect of the MH crystals on the samples largely decreased the rate. The changes in the crystalline and amorphous hydration products potentially influenced the strength development. © RILEM 2022 |
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Physicochemical investigation of Portland cement pastes prepared and cured with seawater |
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https://dx.doi.org/10.1617/s11527-022-01991-z |
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Sun, Yanjie Shen, Peiliang Lu, Jianxin Cai, Yamei Poon, Chi Sun |
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Sun, Yanjie Shen, Peiliang Lu, Jianxin Cai, Yamei Poon, Chi Sun |
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| doi_str |
10.1617/s11527-022-01991-z |
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2024-07-04T02:57:11.672Z |
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| score |
7.4006968 |