Production of a low CO2 footprint nano-silica and its application in concrete

A. Lazaro, G. Quercia, H.J.H. Brouwers

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Abstract

This paper summarizes the research about nano-silica production by the dissolution of olivine and its application in concrete. The production of nano-silica by the dissolution of olivine is an interesting alternative to the commercial methods because of the good quality of the resulting silica as well as low energy requirements and CO2 emissions. This material has a specific surface area between 100 and 500 m2/g. In addition, the application of nano-silica in concrete were studied. The optimum replacement level of olivine nano-silica in conventional vibrated concrete is around 5% by volume resulting in: 1) a compressive strength increase of 20 %; 2) a CO2 emission reduction of 3 %. Therefore, the use of the olivine nano-silica in CV concrete does not only improve the compressive strength but also reduces the CO2 emissions.
Original languageEnglish
Title of host publicationTagungsbericht / IBAUSIL, 19. Internationale Baustofftagung, 16.-18. September 2015, Weimar, Bundesrepublik Deutschland
EditorsJ. Stark, H.-B. Fischer
Place of PublicationWeimar
PublisherF.A. Finger-Institut für Baustoffkunde
Pages1011-1018
Number of pages8
Volume2
ISBN (Print)978-3-00-050225-5
Publication statusPublished - 2015
Event19. Internationale Baustofftagung "ibausil", 16.-18. September 2015, Weimar, Deutschland - Weimar, Germany
Duration: 16 Sep 201518 Sep 2015

Conference

Conference19. Internationale Baustofftagung "ibausil", 16.-18. September 2015, Weimar, Deutschland
Country/TerritoryGermany
CityWeimar
Period16/09/1518/09/15

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