Effect of Incorporation of Various Chemicals in Self- Healing Property of Mortar

Concrete is one of the widely used building material in the world and chief agent which does the binding of all the compounds is cement. Deterioration of concrete structure takes place due to cracks in the concrete. In order to minimize the crack formation an attempt is made to incorporate self-healing compound. Few of the self-healing compounds that can be introduced are urea, calcium formate and calcium acetate. Various dosage of urea was added and its effect on three parameters consistency, setting time and compressive strength was evaluated. Optimum dosage of urea was found to be 2.5% beyond which incorporation in cement paste will lead to decrease in compressive strength. Similarly, when 2.5% of cement is replaced by calcium formate and calcium acetate it will lead to significant change in compressive strength.