F.U.Rahman. Bacterial Concrete or Self Healing Concrete for Repair of cracks. Retrieved on 11 March 2020 from https://theconstructor.org/concrete/bacterial-concrete-self-healing-concrete/13751/
This article discusses the characteristics and properties of self-healing concrete using bacteria as an agent. According to the article, self-healing concrete is a result of the "biological reaction of non-reacted limestone and a calcium-based nutrient with the help of bacteria to heal the crack". A particular strain of bacteria called "Bacillus" is used in conjunction with a "calcium nutrient known as Calcium Lactate". The bacteria themselves can also survive up to 200 years in its "dormant state", and when cracks are formed, water seeps through. The bacteria will be woken up from its "dormant state" and reacts with the nutrients and produces limestone as a byproduct thus filling up the cracks without any external human intervention. Self-healing concrete is also superior to traditional concrete as they have higher "compressive strength". The article also highlighted the different benefits and limitations of the self-healing concrete. One of the notable benefits is that the bacteria "Bacillus" is nonpathogenic thus it is not harmful to humans. However, one of the limitations is that it is very costly to cultivate and produce the bacteria used in the self-healing agent.
This article plays a vital role in our research project as It allows us to further understand the role of the self-healing agent in the self-healing concrete. Since we are proposing this proposal to incorporate this self-healing agent into a concrete design, It is important for us to understand its characteristics and properties. Using those resources, we are capable of drafting the research with concise information.
Commented on
Derrick
Wai Yan
Cen Wei
Hi Justin,
ReplyDeleteThis is an interesting annotated summary about the roles of bacteria agent "Bacillus" in self-healing concrete and well-informed. You also pointed out the benefit and limitation of the self-healing concrete. But be careful with the capitalization of "it" on second paragraph.
Overall, good attempt on your annotated summary.
Regards,
Thazin
Hi Justin
ReplyDeleteIt is a well written summary with good elaboration of the characteristic and properties of self healing concrete. It is indeed an interesting technology to research on. There is also a good link back to the group’s research proposal.
Cheers
JiaYing
Hi Justin,
ReplyDeleteThis summary detailed the roles of bacteria agent for self-healing concrete in a really concise way. I like how you managed to point out the notable benefits and limitations to showcase the extent of feasibility this has.
This was an interesting read that provided a deep insight in a summarized manner.
Best Regards
Derrick
Hi justin,
ReplyDeleteThe annotated summary you written is clear enough for me to understand the basic knowledge on how self-healing concrete work. Besides that i can see the link between the article you summarized on and your group research topic. Good job!
With regards,
Loh Ken Wen