| Autor: |
Minoru Morioka, Yokozeki Kosuke, Takayuki Higuchi, Ichiro Yoshioka |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Construction and Building Materials. 67:338-343 |
| ISSN: |
0950-0618 |
| DOI: |
10.1016/j.conbuildmat.2014.01.029 |
| Popis: |
A new ecological concrete has been developed which utilizes CO 2 emitted from a power plant and which can achieve CO 2 emission levels below zero. This ecological concrete is named CO 2 -SUICOM (CO 2 Storage under Infrastructure by Concrete Materials). This concrete is based on two typical features. One is using a special additive (the dicalcium silicate γ phase: γ-2CaO⋅SiO 2 ) and coal-ash instead of cement. These materials have very low level of CO 2 emissions, and γ-2CaO⋅SiO 2 hardens concrete by reaction with CO 2 . The other feature of this concrete is that CO 2 in the exhaust gas of a power plant can be captured. After this concrete is manufactured, it is set in a chamber. Exhaust gas is drawn into the chamber, and CO 2 included in the exhaust gas is captured in the concrete. A method of evaluating the amount of CO 2 in concrete was developed, which involved analyzing concentrations of CO 2 using an inorganic carbon analyzing device. In this method it is important to use samples of a particular size. The method was used to confirm that amounts of CO 2 emitted during preparation of the concrete were below zero. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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