Preparation and Performance of Radiation Shielding Functional Aggregate Based on High Barium of Sludge

The high barium of sludge has been made into aggregate with low dissolution rate,high strength by high temperature calcinations;the form of existence of element barium after its melted inside the aggregate has been analyzed by using XRD and SEM techniques;the linear attenuation coefficients has been measured among the functional aggregates,basalt,and barite.The results show that the radiation shielding capacity of functional aggregate has been improved substantially compared with that of the basalt,but is equivalent to that of barite.