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Pro133

CO2 CAPTURE FOR MINERALIZED MISCANTHUS AGGREGATES



Author(s): S. Grigoletto, L. Courard, Z. Zhao and F. Michel
Paper category: Proceedings
Book title: CO2STO2019 - International Workshop CO2 Storage in Concrete
Editor(s): Assia Djerbi, Othman Omikrine-Metalssi, Teddy Fen-Chong
ISBN:
e-ISBN: 978-2-35158-232-9
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 98
Total Pages: 1
Language : English


Abstract: At a time when the cement industry is largely responsible for the production of CO2 in the
construction sector, it is useful to make this production a reverse phenomenon: that’s CO2
capture. The CO2 absorption process called carbonation, improves specific properties of the
concrete during the conversion of carbon dioxide CO2 into calcium carbonate CaCO3. Current
environmental concerns motivate the study of carbonation in order to maximize the absorption
of carbon dioxide.
Experimentation has been performed on bio-based and recycled concrete aggregates. The
long term stability as well as the reinforcement of bio-based aggregates – miscanthus - may
be obtained by means of a mineralization process of the natural product: a preparation with a
lime and/or cement-based material is necessary to reinforce the cohesion of the bio-based
product. Specific conditions for CO2 capture have been tested and concrete blocks have been
produced with aggregates. Performances of aggregates and concrete blocks before and after
carbonation are presented and show increasing performances in specific situations of CO2
capture.


Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00


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