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This paper shows properties of inorganic cohesive glue and its appliance on mending ordinary and high strength concrete.Inorganic cohesive glue not only has high strength,but also has equivalent coefficient of expansion with that of concrete and steel etc.The mechanical performance of inorganic cohesive glue is better than that of concrete,and other performances approach to those of concrete.In the mending project of concrete,it can mend the ruptured concrete well,and the strength approaches to or higher than that of integrity.