|Minimum Order Quantity||20 Kg|
|Packaging Size||01Kg Standing pouch|
|Weight Per Pack||01Kg|
|Melting Point||150 Degree|
(Proven Enzyme, Bacterial formulation for Self healing concrete)
Prions Biotech offers enzyme blend BACTAHEAL-PR. The BACTAHEAL-PR is a new concept in the cement industry. Cracks in concrete are a common phenomenon due to the relatively low tensile strength. Durability of concrete is impaired by these cracks since they provide an easy path for the transportation of liquids and gasses that potentially contain harmful substances. If micro-cracks grow and reach the reinforcement, not only the concrete itself may be attacked, but also the reinforcement will be corroded. Therefore, it is important to control the crack width and to heal the cracks as soon as possible. Since the costs involved for maintenance and repair of concrete structures are usually high, this research focuses on the development of self-healing concrete. Self-healing of cracks in concrete would contribute to a longer service life of concrete structures and would make the material not only more durable but also more sustainable.
Crack occurrence in reinforced concrete should be minimized for both durability and economical reasons as crack repair is costly. Autogenous repair, or self-healing, of concrete would save a substantial amount of money, as manual inspection and crack repair could be minimized. Thus, a reliable self-healing mechanism for concrete would not only result in more durable structures, but would also be beneficial for the global economy. This study exploited the potential to apply calcite-precipitating bacteria as a crack-healing agent in concrete.
The potential of different species to precipitate calcite, produce endospores, survive concrete-production, and heal cracks by sealing them with calcite was investigated. Furthermore, the mechanical properties of ‘bacterial concrete’ were tested. ESEM studies showed that alkali-resistant spore-forming bacteria embedded in the concrete matrix can precipitate substantial amounts of calcite.
The bacterial approach thus seems a highly promising mechanism to mediate self-healing in concrete structures.
Cracks can occur in concrete structures due to multiple reasons such as autogenous shrinkage, freeze thaw reactions, mechanical compressive- and tensile forces. Although micro-cracks do not necessarily result in significant strength loss of concrete, the ingress of water and other reactive chemicals such as chloride and water may pose a thread to the steel reinforcement as these strongly enhance its corrosion rate.