International Scientific Journal of Engineering and Management

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ISSN: 2583-6129

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EXPERIMENTAL STUDY ON BIOBASED SELF HEALING CONCRETE USING TRICHODERMA REESI AND POLYPROPYLENE FIBER

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EXPERIMENTAL STUDY ON BIOBASED SELF HEALING CONCRETE USING TRICHODERMA REESI AND POLYPROPYLENE FIBER

 

Dr.O.R Kavitha, Alan Tomy, Amarnath S, Sanjeev G, Murugan V

 

ABSTRACT

 

Self-healing concrete is a promising solution to extend the service life and durability of concrete structures by autonomously repairing cracks that form due to various reasons, suchas shrinkage, weathering, and loading. In this study, it is proposed a novel approach for self- healing concrete using Trichoderma Reesei, a fungus known for its cellulolytic enzymes, and polypropylene (PP) fiber as a reinforcement material.

The self-healing mechanism involves the activation of Trichoderma Reesei by moisture andnutrients from the crack environment. The fungus produces cellulolytic enzymes that can break down cellulose, a component of plant-based fibers, and release calcium carbonate as a byproduct. Calcium carbonate then precipitates in the presence of carbon dioxide from the surrounding environment, effectively sealing the crack and restoring the integrity of theconcrete.

Polypropylene fiber is used as a reinforcement material to enhance the mechanical properties of the self-healing concrete. The fibers are uniformly distributed in the concrete matrix, providing additional tensile strength and crack resistance, which helps to prevent crack propagation and improve the effectiveness of the self-healing process. The performance of the bio-based self-healing concrete was evaluated through varioustests, including crack healing efficiency, compressive strength, and split tensile strength. The results showed that the addition of Trichoderma Reesei and polypropylene fiber significantly improved the crack healing efficiency of the concrete, with crack widths reduced by up to 80% compared to control samples without the bio-based healing agent. The mechanical properties of the self-healing concrete were also maintained or even improved, with no adverse effects observed.

In conclusion, the proposed bio-based self-healing concrete using Trichoderma Reesei and polypropylene fiber has shown promising results in terms of crack healing efficiency and mechanical performance. This approach has the potential to contribute to the development of sustainable and durable concrete structures with extended service life and reduced maintenance needs. Further research and development are warranted to optimize the formulation and application of this innovative self-healing concrete technology.


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