EFFECTS OF HARDWATER ON CEMENT AND CONCRETE PROPERTIES
Keywords:Effects, Concrete, Sodium Bicarbonate, Compressive Strength, Split Tensile Strength
Presence of either temporary hardness or permanent hardness to the water is becoming almost inevitable in both surface and ground water. The water used in construction purpose, more so in the preparation of concrete knowingly or unknowingly is containing hardness. It is therefore necessary for researchers to study the effect of hardness on cement and concrete properties. In this work synthetic temporary hardwater at different proportions is prepared by dissolving NaHCO3 is distilled water and such water is used to prepare concreate. It is observed that both cement and concrete properties are affected by temporary hardness. Normal consistency, initial and final setting times are increased in the presence of NaHCO3 in water. Also, elasticity properties are affected by presence of temporary hardness in water.