Journal of Advanced Concrete Technology
Online ISSN : 1347-3913
ISSN-L : 1346-8014
Scientific paper
A New Concept of Calcium Carbonate Concrete using Demolished Concrete and CO2
Ippei MaruyamaWataru KotakaBui Ngoc KienRyo KuriharaManabu KanematsuHikotsugu HyodoHiroshi HiraoRyoma KitagakiMasaki TamuraMasato TsujinoSatoshi FujimotoTakafumi Noguchi
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2021 Volume 19 Issue 10 Pages 1052-1060

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Abstract

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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