A brief critical view on the carbon-conditioning of recycled aggregate using pressure chamber
Farid Sartipi
Abstract
CO2 Concrete as an environmental material had attracted the public view for many years. Several methods had been proposed for entrapping CO2 gas in concrete some of them targeting cement paste as the reactant with the CO2 gas and the other methods consider aggregate as the reactant. The common purpose of all, is to, first, reduce the impact of greenhouse gas emissions via the means of CO2 gas consumption, and second, to increase the mechanical properties of concrete by accelerating the formation of calcium carbonate crystals. Seeking to achieve a successful wide scale commercialization, it is important to address the flawed aspects of a concept. This paper projects a critical point of view on some basic flawed assumptions taken as facts, in the conceptualization of carbon-conditioning of recycled aggregate.