COMPRESSIVE STRENGTH AND ACID RESISTANCE CHARACTERISTICS OF CEMENT PASTE AND MORTAR INCORPORATING WASTE CERAMIC INSULATOR

A series of cement paste and mortar specimens containing waste ceramic insulator and blast- furnace slag was made. The compressive strength and the acid resistance of these materials are investigated here. Among 18 specimens of cement paste, only two showed a compressive strength less than the standard specified for the sulfuric acid-proof mortar. These tests show that the waste ceramic insulator powder can be added by approximately 0.4 parts by weight in the powder materials of cement paste, and the waste ceramic insulator aggregate can be added by two-thirds by weight in the materials of mortar. The acid resistance was tested by immersing the specimens in 5% sulfuric acid. The reaction layer formation of specimens is affected by the immersion time, temperature, and compounding ratio of the materials. The results show that adding the waste ceramic insulator controls the dilatability of the reaction layer of cement paste and mortar.