Properties and structure of cement mortar modified with epoxy emulsion

The mechanical and adhesive properties,shrinkage and durability of cement mortar modified with water borne epoxy emulsion were experimentally studied,and the microstructures of the mortars were analyzed by SEM and MIP.The results showed that,adding 6%~10%(solid content) epoxy emulsion based on the mass of the cement in mortar will remarkably improve the mechanical properties of the mortar,and the adhesive strength of the mortar with aged cement mortar.The drying shrinkage of the modified mortar decreased,and the chloride permeability,carbonation and frost resistance increased with the increase of the polymer amount added.Compared with ordinary cement mortar,the polymer modified cement mortar is more compacted in structure,lower in porosity and small in mean pore size.