Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System

In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the react...
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Autor*in:	Zhaoheng Li [verfasserIn] Yudong Xu [verfasserIn] Hao Liu [verfasserIn] Jianwei Zhang [verfasserIn] Jiangxiong Wei [verfasserIn] Qijun Yu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	MgO silica fume reaction process thermodynamics kinetics

Übergeordnetes Werk:	In: Materials - MDPI AG, 2009, 12(2018), 1, p 80
Übergeordnetes Werk:	volume:12 ; year:2018 ; number:1, p 80

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/ma12010080

Katalog-ID:	DOAJ017535433

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520			\|a In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO.
650		4	\|a MgO
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allfields	10.3390/ma12010080 doi (DE-627)DOAJ017535433 (DE-599)DOAJ8bd69f65330b40ceb3fe5d216a22141d DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Zhaoheng Li verfasserin aut Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO. MgO silica fume reaction process thermodynamics kinetics Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Yudong Xu verfasserin aut Hao Liu verfasserin aut Jianwei Zhang verfasserin aut Jiangxiong Wei verfasserin aut Qijun Yu verfasserin aut In Materials MDPI AG, 2009 12(2018), 1, p 80 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2018 number:1, p 80 https://doi.org/10.3390/ma12010080 kostenfrei https://doaj.org/article/8bd69f65330b40ceb3fe5d216a22141d kostenfrei http://www.mdpi.com/1996-1944/12/1/80 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 1, p 80
spelling	10.3390/ma12010080 doi (DE-627)DOAJ017535433 (DE-599)DOAJ8bd69f65330b40ceb3fe5d216a22141d DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Zhaoheng Li verfasserin aut Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO. MgO silica fume reaction process thermodynamics kinetics Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Yudong Xu verfasserin aut Hao Liu verfasserin aut Jianwei Zhang verfasserin aut Jiangxiong Wei verfasserin aut Qijun Yu verfasserin aut In Materials MDPI AG, 2009 12(2018), 1, p 80 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2018 number:1, p 80 https://doi.org/10.3390/ma12010080 kostenfrei https://doaj.org/article/8bd69f65330b40ceb3fe5d216a22141d kostenfrei http://www.mdpi.com/1996-1944/12/1/80 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 1, p 80
allfields_unstemmed	10.3390/ma12010080 doi (DE-627)DOAJ017535433 (DE-599)DOAJ8bd69f65330b40ceb3fe5d216a22141d DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Zhaoheng Li verfasserin aut Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO. MgO silica fume reaction process thermodynamics kinetics Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Yudong Xu verfasserin aut Hao Liu verfasserin aut Jianwei Zhang verfasserin aut Jiangxiong Wei verfasserin aut Qijun Yu verfasserin aut In Materials MDPI AG, 2009 12(2018), 1, p 80 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2018 number:1, p 80 https://doi.org/10.3390/ma12010080 kostenfrei https://doaj.org/article/8bd69f65330b40ceb3fe5d216a22141d kostenfrei http://www.mdpi.com/1996-1944/12/1/80 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 1, p 80
allfieldsGer	10.3390/ma12010080 doi (DE-627)DOAJ017535433 (DE-599)DOAJ8bd69f65330b40ceb3fe5d216a22141d DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Zhaoheng Li verfasserin aut Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO. MgO silica fume reaction process thermodynamics kinetics Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Yudong Xu verfasserin aut Hao Liu verfasserin aut Jianwei Zhang verfasserin aut Jiangxiong Wei verfasserin aut Qijun Yu verfasserin aut In Materials MDPI AG, 2009 12(2018), 1, p 80 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2018 number:1, p 80 https://doi.org/10.3390/ma12010080 kostenfrei https://doaj.org/article/8bd69f65330b40ceb3fe5d216a22141d kostenfrei http://www.mdpi.com/1996-1944/12/1/80 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 1, p 80
allfieldsSound	10.3390/ma12010080 doi (DE-627)DOAJ017535433 (DE-599)DOAJ8bd69f65330b40ceb3fe5d216a22141d DE-627 ger DE-627 rakwb eng TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Zhaoheng Li verfasserin aut Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO. MgO silica fume reaction process thermodynamics kinetics Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics Yudong Xu verfasserin aut Hao Liu verfasserin aut Jianwei Zhang verfasserin aut Jiangxiong Wei verfasserin aut Qijun Yu verfasserin aut In Materials MDPI AG, 2009 12(2018), 1, p 80 (DE-627)595712649 (DE-600)2487261-1 19961944 nnns volume:12 year:2018 number:1, p 80 https://doi.org/10.3390/ma12010080 kostenfrei https://doaj.org/article/8bd69f65330b40ceb3fe5d216a22141d kostenfrei http://www.mdpi.com/1996-1944/12/1/80 kostenfrei https://doaj.org/toc/1996-1944 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 1, p 80
language	English
source	In Materials 12(2018), 1, p 80 volume:12 year:2018 number:1, p 80
sourceStr	In Materials 12(2018), 1, p 80 volume:12 year:2018 number:1, p 80
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topic_facet	MgO silica fume reaction process thermodynamics kinetics Technology T Electrical engineering. Electronics. Nuclear engineering Engineering (General). Civil engineering (General) Microscopy Descriptive and experimental mechanics
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authorswithroles_txt_mv	Zhaoheng Li @@aut@@ Yudong Xu @@aut@@ Hao Liu @@aut@@ Jianwei Zhang @@aut@@ Jiangxiong Wei @@aut@@ Qijun Yu @@aut@@
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callnumber-first	T - Technology
author	Zhaoheng Li
spellingShingle	Zhaoheng Li misc TK1-9971 misc TA1-2040 misc QH201-278.5 misc QC120-168.85 misc MgO misc silica fume misc reaction process misc thermodynamics misc kinetics misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering misc Engineering (General). Civil engineering (General) misc Microscopy misc Descriptive and experimental mechanics Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System
authorStr	Zhaoheng Li
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topic_title	TK1-9971 TA1-2040 QH201-278.5 QC120-168.85 Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System MgO silica fume reaction process thermodynamics kinetics
topic	misc TK1-9971 misc TA1-2040 misc QH201-278.5 misc QC120-168.85 misc MgO misc silica fume misc reaction process misc thermodynamics misc kinetics misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering misc Engineering (General). Civil engineering (General) misc Microscopy misc Descriptive and experimental mechanics
topic_unstemmed	misc TK1-9971 misc TA1-2040 misc QH201-278.5 misc QC120-168.85 misc MgO misc silica fume misc reaction process misc thermodynamics misc kinetics misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering misc Engineering (General). Civil engineering (General) misc Microscopy misc Descriptive and experimental mechanics
topic_browse	misc TK1-9971 misc TA1-2040 misc QH201-278.5 misc QC120-168.85 misc MgO misc silica fume misc reaction process misc thermodynamics misc kinetics misc Technology misc T misc Electrical engineering. Electronics. Nuclear engineering misc Engineering (General). Civil engineering (General) misc Microscopy misc Descriptive and experimental mechanics
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title	Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System
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title_full	Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System
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author_browse	Zhaoheng Li Yudong Xu Hao Liu Jianwei Zhang Jiangxiong Wei Qijun Yu
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title_sort	effect of the mgo/silica fume ratio on the reaction process of the mgo–sio2–h2o system
callnumber	TK1-9971
title_auth	Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System
abstract	In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO.
abstractGer	In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO.
abstract_unstemmed	In order to clarify the effect of the MgO–silica fume (SF) ratio on the reaction process of the MgO–SiO2–H2O system, the reaction products and degree of reaction were characterized. Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M–S–H) gels were generated upon dissolution of MgO. However, the M–S–H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO–SiO2–H2O system, the main product was M–S–H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M–S–H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M–S–H gels. Based on the experimental values, an equation is proposed for the reaction kinetics of MgO.
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title_short	Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System
url	https://doi.org/10.3390/ma12010080 https://doaj.org/article/8bd69f65330b40ceb3fe5d216a22141d http://www.mdpi.com/1996-1944/12/1/80 https://doaj.org/toc/1996-1944
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up_date	2024-07-04T01:59:36.873Z
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Furthermore, the parameters of the reaction thermodynamics were calculated and the reaction kinetics were deduced. The results indicate that a large amount of Mg(OH)2 and small quantities of magnesium silicate hydrate (M&ndash;S&ndash;H) gels were generated upon dissolution of MgO. However, the M&ndash;S&ndash;H gels were continuously generated until the SF or Mg(OH)2 was consumed completely. For a MgO dosage less than 50% of the total MgO&ndash;SiO2&ndash;H2O system, the main product was M&ndash;S&ndash;H gel, while for a MgO dosage greater than 50%, the main product was Mg(OH)2. The results indicate that M&ndash;S&ndash;H gels have greater stability than Mg(OH)2, and the final reaction product was prone to be M&ndash;S&ndash;H gels. 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Effect of the MgO/Silica Fume Ratio on the Reaction Process of the MgO–SiO2–H2O System

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