Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alkali-Silica Reaction Mitigation Using Nano-silica and Fly Ash
Alkali-aggregate reaction was first observed in the US during 1920s. In the last several decades, several studies investigated the mechanisms of alkali-silica reaction in concrete and the extent of damage it may cause to the cementitious matrix. Research on alkali-silica reaction mitigation covers mainly the use of supplementary cementitious materials and lithium compounds. Meanwhile, nano-silica has proved its capacity to enhance concrete properties. Nano-silica consists of highly reactive high surface area particles generally available dispersed in a solution. The addition of nano-silica to concrete can significantly enhance the overall cementitious matrix and the interfacial transition zone in specific. Such enhancements can lead to refined pore structure, lower overall permeability and higher strength. The use of nano-silica in infrastructure project promises longer service life with low maintenance activities resulting in substantial economic savings. In the current study, the use of effect of nano-silica on the alkali-silica reaction will be investigated. Results show that nano-silica can help mitigate the effect of alkali-silica reaction.
Alkali-Silica Reaction Mitigation Using Nano-silica and Fly Ash
Alkali-aggregate reaction was first observed in the US during 1920s. In the last several decades, several studies investigated the mechanisms of alkali-silica reaction in concrete and the extent of damage it may cause to the cementitious matrix. Research on alkali-silica reaction mitigation covers mainly the use of supplementary cementitious materials and lithium compounds. Meanwhile, nano-silica has proved its capacity to enhance concrete properties. Nano-silica consists of highly reactive high surface area particles generally available dispersed in a solution. The addition of nano-silica to concrete can significantly enhance the overall cementitious matrix and the interfacial transition zone in specific. Such enhancements can lead to refined pore structure, lower overall permeability and higher strength. The use of nano-silica in infrastructure project promises longer service life with low maintenance activities resulting in substantial economic savings. In the current study, the use of effect of nano-silica on the alkali-silica reaction will be investigated. Results show that nano-silica can help mitigate the effect of alkali-silica reaction.
Alkali-Silica Reaction Mitigation Using Nano-silica and Fly Ash
Sobolev, Konstantin (Herausgeber:in) / Shah, Surendra P. (Herausgeber:in) / Zeidan, Mohamed (Autor:in) / Said, Aly (Autor:in)
Nanotechnology in Construction ; Kapitel: 60 ; 459-464
01.01.2015
6 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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