Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Impact of Metakaolin, Micro-silica, and Colloidal Nano-silica on Mechanical and Microstructural Properties of Cement Mortar
https://orcid.org/http://orcid.org/0000-0003-1060-6711
https://orcid.org/http://orcid.org/0000-0001-6490-4074
Sustainable materials with high performance and high reactive properties are increasingly being used in concrete to fulfill society’s need for developing strong, durable, and sustainable infrastructure. Therefore, the current study focuses on using highly reactive metakaolin (MK), densified micro-silica (DMS), and colloidal nano-silica (CNS) to produce high performance sustainable cement mortars. Mortar samples were prepared for control (C100) and binary mixes (C95%MK05%, C95%MS05%, and C95%NS05%) to evaluate the compressive strength at the ages of 7 and 28 days. In addition, paste samples were prepared for all the binary mixes to examine the development in microstructure by using scanning electron microscope (SEM) with backscattered electron (BSE) imaging and EDS analysis. The compressive strength results show that the binary mix (C95%NS05%) having CNS showed better strength at both ages (7 and 28 days) as compared to the control and other binary mixes. The SEM-BSE with EDS analysis results also portrayed that Ca/Si ratio of CSH phase in binary mix (C95%NS05%) having CNS showed the least value (0.52) as compared to all other binary mixes. The better compressive strength and enhanced microstructure of binary mix having CNS are attributed to the highly reactive and extremely fine nano-silica particles of the colloidal nano-silica, which increase in hydration reaction and causes formation of high-density CSH phases, which ultimately leads to better microstructure and better engineering performance. This study suggests that the use of colloidal nano-silica in concrete applications will contribute to the development of strong, durable, and sustainable infrastructure.
Impact of Metakaolin, Micro-silica, and Colloidal Nano-silica on Mechanical and Microstructural Properties of Cement Mortar
https://orcid.org/http://orcid.org/0000-0003-1060-6711
https://orcid.org/http://orcid.org/0000-0001-6490-4074
Sustainable materials with high performance and high reactive properties are increasingly being used in concrete to fulfill society’s need for developing strong, durable, and sustainable infrastructure. Therefore, the current study focuses on using highly reactive metakaolin (MK), densified micro-silica (DMS), and colloidal nano-silica (CNS) to produce high performance sustainable cement mortars. Mortar samples were prepared for control (C100) and binary mixes (C95%MK05%, C95%MS05%, and C95%NS05%) to evaluate the compressive strength at the ages of 7 and 28 days. In addition, paste samples were prepared for all the binary mixes to examine the development in microstructure by using scanning electron microscope (SEM) with backscattered electron (BSE) imaging and EDS analysis. The compressive strength results show that the binary mix (C95%NS05%) having CNS showed better strength at both ages (7 and 28 days) as compared to the control and other binary mixes. The SEM-BSE with EDS analysis results also portrayed that Ca/Si ratio of CSH phase in binary mix (C95%NS05%) having CNS showed the least value (0.52) as compared to all other binary mixes. The better compressive strength and enhanced microstructure of binary mix having CNS are attributed to the highly reactive and extremely fine nano-silica particles of the colloidal nano-silica, which increase in hydration reaction and causes formation of high-density CSH phases, which ultimately leads to better microstructure and better engineering performance. This study suggests that the use of colloidal nano-silica in concrete applications will contribute to the development of strong, durable, and sustainable infrastructure.
Impact of Metakaolin, Micro-silica, and Colloidal Nano-silica on Mechanical and Microstructural Properties of Cement Mortar
https://orcid.org/http://orcid.org/0000-0003-1060-6711
https://orcid.org/http://orcid.org/0000-0001-6490-4074
Sustainable materials with high performance and high reactive properties are increasingly being used in concrete to fulfill society’s need for developing strong, durable, and sustainable infrastructure. Therefore, the current study focuses on using highly reactive metakaolin (MK), densified micro-silica (DMS), and colloidal nano-silica (CNS) to produce high performance sustainable cement mortars. Mortar samples were prepared for control (C100) and binary mixes (C95%MK05%, C95%MS05%, and C95%NS05%) to evaluate the compressive strength at the ages of 7 and 28 days. In addition, paste samples were prepared for all the binary mixes to examine the development in microstructure by using scanning electron microscope (SEM) with backscattered electron (BSE) imaging and EDS analysis. The compressive strength results show that the binary mix (C95%NS05%) having CNS showed better strength at both ages (7 and 28 days) as compared to the control and other binary mixes. The SEM-BSE with EDS analysis results also portrayed that Ca/Si ratio of CSH phase in binary mix (C95%NS05%) having CNS showed the least value (0.52) as compared to all other binary mixes. The better compressive strength and enhanced microstructure of binary mix having CNS are attributed to the highly reactive and extremely fine nano-silica particles of the colloidal nano-silica, which increase in hydration reaction and causes formation of high-density CSH phases, which ultimately leads to better microstructure and better engineering performance. This study suggests that the use of colloidal nano-silica in concrete applications will contribute to the development of strong, durable, and sustainable infrastructure.
Impact of Metakaolin, Micro-silica, and Colloidal Nano-silica on Mechanical and Microstructural Properties of Cement Mortar
Lecture Notes in Civil Engineering
Nia, Elham Maghsoudi (Herausgeber:in) / Ling, Lloyd (Herausgeber:in) / Awang, Mokhtar (Herausgeber:in) / Emamian, Seyed Sattar (Herausgeber:in) / Khan, Kaffayatullah (Autor:in) / Johari, Megat Azmi Megat (Autor:in)
01.01.2023
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Improved Properties of Cement Mortar and Concrete with Colloidal Silica
| British Library Conference Proceedings | 1998
Alkali–silica reaction in metakaolin-based geopolymer mortar
| British Library Online Contents | 2015
Alkali–silica reaction in metakaolin-based geopolymer mortar
| Online Contents | 2014
Alkali–silica reaction in metakaolin-based geopolymer mortar
| Springer Verlag | 2014