Current research status of carbon capture material from recycled fine powder
Waste concrete can be made into recycled aggregate for recycling after crushing and screening.The waste cement stone attached to the recycled aggregate will have a negative impact on the performance of the recycled aggregate.The recycled fine powder prepared from waste cement stone is mainly composed of hydrated calcium silicate,calcium hydroxide,ettringite,unhy-drated cement particles and other substances.It also has the characteristics of high porosity,low strength,and high calcium content.It can absorb CO2 in the air and fix CO2 by chemical reaction.Preparing it as a carbon capture material can improve the resource utilization of waste concrete while capturing carbon dioxide and reducing carbon emissions.In this paper,the research progress of domestic and foreign scholars is reviewed from three aspects:carbonization performance,carbonization process and carbonization mechanism of recycled fine powder,in order to provide some reference for the utilization of recycled fine powder.
recycled fine powdercarbon fixationcarbonization processcarbonation mechanism
万方数据
维普
