A REVIEW PAPER ON SELF HEALING CONCRETE

CIVIL ENGINEERING

In recent years, researches concerning the strength, toughness and the durability of cement based concrete structures. The interest on concrete’s self-healing process is increasing, due to the rapidly deterioration of that material which tends to crack and thus quickly deteriorate. Crack formation is very common phenomenon in concrete structure which allows the water and different type of chemical into the concrete through the cracks and decreases their durability, strength and which also affect the reinforcement when it comes in contact with water, CO2 and other chemicals. It is costly to maintain or repair concrete based structures time to time. For resolving this problem self-healing concrete mechanism is introduced in the concrete which helps to repair the cracks by producing calcium carbonate crystals which block the micro cracks and pores in the concrete. Self-healing concrete is classified into two parts: autonomous self-healing concrete and autogenous self-healing concrete.

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