It is difficult to estimate how far we are going in the field of science and technology. In this blog, we are going to study about self-healing concrete, which is an example in the field of modern science and technology.
“Click here in link and read about an Introduction of self healing materials.“
About the Self healing concrete:
Concrete that has self-healing properties is called self-healing concrete. Self-healing concrete also called as bacterial concrete. Self-healing is the quality of any material which has the ability to repair itself. Self healing concrete was invented by Henk Jonkers, a microbiologist and professor at Delft University of Technology in the Netherlands. Jonkers began developing self healing concrete in 2006.
Sustainability is the materialistic properties that characterize concrete that defines all of these activities and helps the concrete shield against attacks that may be of a physical or chemical nature.
When the durability starts decreasing, then the chances of developing cracks are increases. Some general cracks in concrete are:
- Due to vibration and improper mixing
- Due to heavy loads
- Usage of inferior quality materials
- Adverse temperature influence
How self-healing occur in concrete?
Henk Jonkers was take three years of experiment after 2006, he found the perfect healing agent – bacillus. Called bacteria based self-healing concrete.
Self-healing concrete is a product that will biologically produce limestone to heal cracks that appear on the surface of concrete structures.
Ca(C3H5O2)2 + 7O2 → CaCO3 + 5CO2 + 5H2O
Specially selected types of the bacteria genus Bacillus, along with a calcium-based nutrient known as calcium lactate (Ca(C3H5O2)2), and nitrogen and phosphorus, are added to the ingredients of the concrete when it is being mixed.
Generally, when cracks occur in concrete, water is deliberately poured into the cracks and the precursor is activated. The active precursor induces bacteria to react with the interim precursor and forms a base of calcium carbonate (CaCO3) called limestone and fills the crack.
Applications:
Self-healing concrete can be used in building basements, building walls, tunnels, high-tech bridges, highways, marine structures.
High strength buildings with advance self-healing feature.
Advantages:
- Reduction in permeability of concrete
- Help to fill the cracks
- Reduction in corrosion reinforced concrete
- Improvement of compressive strength of concrete
Disadvantages:
- Cost of self healing concrete is very high
- Investigation of calcite precipitation is costly
- Skilled workers are required for construction
What about future of self healing concrete? As you can imagine, Self-healing concrete is an advanced concrete that is capable of controlling fracture or cracks. One of the most commonly used building materials is once again revolutionizing how we build and design our infrastructures. With the continuous efforts of scientists, it is still going on in search and they are taking many different approaches to perfecting self healing concrete. They are still searching for the best bacteria sodium silicate, as well as fungus for concrete. Not only will the structures benefit from self-healing concrete, they are an amazing solution for skyscrapers.
“Go through this link and read about glass fiber“
Conclusion: In this article, you read about self healing concrete, its uses in our modern world etc. and its advantages, disadvantages. Thank you for reading my article hope it may help you to understand about self healing concrete. And for more article related to Advance materials, polymers, electronic materials, bio materials, magnetic materials as well as other. topics you can continue on this (www.thematerialsworld.com) website.
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