A New Concept of Calcium Carbonate Concrete using Demolished Concrete and CO2

Countermeasures against carbon dioxide emissions are a concern in the construction field as well as in society. To solve this problem, a concept for new calcium carbonate concrete is proposed, and this concept is validated experimentally. In the proposed concept, calcium carbonate comprising Ca orig...

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Published inJournal of Advanced Concrete Technology Vol. 19; no. 10; pp. 1052 - 1060
Main Authors Maruyama, Ippei, Kotaka, Wataru, Kien, Bui Ngoc, Kurihara, Ryo, Kanematsu, Manabu, Hyodo, Hikotsugu, Hirao, Hiroshi, Kitagaki, Ryoma, Tamura, Masaki, Tsujino, Masato, Fujimoto, Satoshi, Noguchi, Takafumi
Format Journal Article
LanguageEnglish
Published Tokyo Japan Concrete Institute 08.10.2021
Japan Science and Technology Agency
Subjects
Calcium carbonate
Carbon dioxide
Concrete
Industrial plants
Industrial wastes
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Summary:Countermeasures against carbon dioxide emissions are a concern in the construction field as well as in society. To solve this problem, a concept for new calcium carbonate concrete is proposed, and this concept is validated experimentally. In the proposed concept, calcium carbonate comprising Ca originating from demolished concrete or other Ca-containing industrial wastes and HCO3- from CO2 gas collected from the air or emitted by industrial plants acts as a binder for aggregates, which can be natural rocks or crushed demolished concrete. This short paper describes the details of the process of making calcium carbonate concrete and discusses future perspectives.
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ISSN:1346-8014
1347-3913
DOI:10.3151/jact.19.1052