In:
IOP Conference Series: Materials Science and Engineering, IOP Publishing, Vol. 1116, No. 1 ( 2021-04-01), p. 012154-
Abstract:
Structural members made of concrete may develop micro cracks within themselves with time due to shrinkage and temperature effects, which instigates untimely failures. After the second hydration of concrete, some cracks and pores are still left unsealed leading to the auxiliary degradation and lessened service life. The use of ureolytic species of microorganism with concrete aids in the sealing of these cracks without expulsion of any precarious fumes or constituents detrimental to the environment, which is present in various chemical sealants accessible in the market. The ureolytic bacterial species is capable of producing calcium carbonate precipitate in the presence of urea and calcium substrate. The precipitate formed has the ability to cure the cracks and pores that would have occurred during placing or in their service life. In this paper, the comparison between bacteria and yeast infused concrete with the control concrete in terms of durability aspect like compressive strength, behaviour in acidic exposure and water absorption rate has been determined. The amount of calcium carbonate generated with same growth conditions has been determined for both bacteria and yeast infused concrete, which will help in evaluating the nature of different microorganism for self-healing mechanism. The result of this study is that Yeast has the potential to be used as microbe in self-healing of concrete.
Type of Medium:
Online Resource
ISSN:
1757-8981
,
1757-899X
DOI:
10.1088/1757-899X/1116/1/012154
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2021
detail.hit.zdb_id:
2506501-4
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