Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Application of Nanotechnology to Control ASR in Portland Cement Concrete
Nanotechnology applications to control ASR can be broadly classified in three categories, i.e., (i) mechanical controls, (ii) chemical controls and (iii) combination of both physical and chemical controls. Control of crack growth and propagation by adding carbon nano-fibers and nano-tubes is considered as the main approach under the category of mechanical control. On the other hand, adding nano-particles (e.g., nano-silica and others) in different dosages (e.g., 0.5, 1.0, and 2 %) with and without conventional SCMs (e.g., fly ash) to control availability of alkalis and Ca(OH)2 is the main approach under chemical measures. Different concrete mixtures containing nanosilica, fly ash and carbon-nanofibers were developed. An accelerated concrete cylinder test (ACCT) was used to test all the concrete mixtures, measure expansion due to ASR and verify the efficacy of each control measure to control ASR.
Application of Nanotechnology to Control ASR in Portland Cement Concrete
Nanotechnology applications to control ASR can be broadly classified in three categories, i.e., (i) mechanical controls, (ii) chemical controls and (iii) combination of both physical and chemical controls. Control of crack growth and propagation by adding carbon nano-fibers and nano-tubes is considered as the main approach under the category of mechanical control. On the other hand, adding nano-particles (e.g., nano-silica and others) in different dosages (e.g., 0.5, 1.0, and 2 %) with and without conventional SCMs (e.g., fly ash) to control availability of alkalis and Ca(OH)2 is the main approach under chemical measures. Different concrete mixtures containing nanosilica, fly ash and carbon-nanofibers were developed. An accelerated concrete cylinder test (ACCT) was used to test all the concrete mixtures, measure expansion due to ASR and verify the efficacy of each control measure to control ASR.
Application of Nanotechnology to Control ASR in Portland Cement Concrete
Sobolev, Konstantin (Herausgeber:in) / Shah, Surendra P. (Herausgeber:in) / Mukhopadhyay, Anol K. (Autor:in) / Liu, Kai-Wei (Autor:in)
Nanotechnology in Construction ; Kapitel: 61 ; 465-471
01.01.2015
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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