Natural hydraulic lime(NHL)has both pneumatic and hydraulic components,so NHL can be widely used in the restoration of historic building masonry walls.Industrial solid waste contains certain elements of Ca and Si,meeting the mineral element requirements for the preparation of NHL.In this study,limestone,slag,fly ash and silica fume were used as raw materials to prepare NHL by calcination with different calcium-silicon ratio parameters.The composition,product composition,microstructure,mechanical properties,and setting time of NHL were tested using XRD,TG,compressive and flexural tests,SEM-EDS,...
