Self Healing Concrete Abstract

As it is strong durable and relatively cheap concrete is since almost two centuries the most used construction material worldwide which can easily be recognized as it has changed the physiognomy of rural areas.

Self healing concrete abstract. In this paper peptone yeast extract and bacillus subtilis were added as microbial adjuvant in concrete mix design. Self healing concrete seminar report. Concrete is very good material to resist the compressive load to a limit but if the load applied on the. According to the analysis and study by different authors that the cracks healed by.

When water enters through the cracks it reacts with bacteria. This problem autonom ous self healing 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. Self healing materials are a class of smart materials that have the structurally incorporated ability to repair damage caused by mechanical usage over time. A novel eco friendly self healing technique called biocalcification is one such approach on which studies were carried out to investigate the crack healing mechanism in enhancing the strength and durability ofconcrete.

Concrete can be considered as a kind of artificial rock with properties more or less similar to certain natural rocks. This paper also gives a brief description of the various properties of concrete which vary with the addition of bacteria. Self healing concrete offers a solution to preventthis. In this method of enhancing the performance of concrete the calcite precipitating spore forming bacteria is introduced into concrete.

In this article the selection of the healing agent and its containment and the effectiveness of a self healing system in concrete medium are addressed. Concrete is still one of the main materials used in the construction industry from the foundation of buildings to the structure of bridges and underground parking lots. Abstract bacterial self healing is an innovative technology allowing repairing open micro cracks in concrete by caco 3 precipitation. This bio technology improves the durability of the structure.

As amalgamation of healing agent to concrete may have. Abstract self healing concrete could solve the problem of concrete structures deteriorating well before the end of their service life. The casting of concrete causes vibration and impact of aggregates on the self healing system and the subsequent curing causes shrinkage and thermal stresses.