Hydration Properties of Circulating Fluidized Bed Fly Ash under Carbonation Condition
LIU Yang
LI Chi
GAO Yu
LI Shuanhu
Abstract：Mortars were prepared using solid waste—circulating fluidized bed fly ash and flue gas desulphurisation gypsum as mineral admixtures.The carbon sequestration capacity,mechanical properties and reaction mechanism of mortars under carbonation conditions were investigated through carbonation tests,strength tests,X-ray diffraction and scanning electron microscopy-energy spectroscopy.The results show that the incorporation of solid waste increases the pore space and the content of calcium source,and significantly improves the CO2 absorption of the mortars.Furthermore,the mechanical properties of the mortars are significantly improved after carbonation and maintenance,and the expansion problem caused by high sulphur is eliminated.The application of this process can increase the utilisation rate of industrial solid waste in Inner Mongolia region by up to 36.5%.
Keywords：circulating fluidized bedfly ashcarbonizationCO2 absorptionresource utilization
Publication Date：2024-09-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 837-845 )