New ecological concrete that reduces CO2 emissions below zero level ～ New method for CO2 capture and storage ～

摘要

We have developed a new ecological concrete which can achieve a CO2 emission level below zero by capturing CO2. This concrete is based on two typical features. One of the features of this concrete is using a special admixture (the γ phase of dicalcium silicate: γ-2CaO.SiO2) instead of cement. This material has a very low level of CO2 emissions and hardens the concrete by reacting with CO2. The other feature of this concrete is capturing the CO2 contained in the exhaust gas from thermal power stations. In this paper, we set forth the concepts of the development and various results of examination of the ecological concrete. This ecological concrete is named "CO2-SUICOM" (CO2 Storage under.infrastructure by Concrete Materials).