Publication Type:

Conference Paper

Source:

IOP Conference Series: Materials Science and Engineering, Institute of Physics Publishing, Volume 310, Number 1 (2018)

URL:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85043719166&doi=10.1088%2f1757-899X%2f310%2f1%2f012061&partnerID=40&md5=ccb8132e2a21904baa6d602153454ba1

Keywords:

Bacillus subtilis, Bacteria, bacteriology, Bio mineralizations, calcium, calcium carbonate, Carbonate precipitation, Concretes, Cracks, Curing, Durability, Durability property, Efficiency and performance, Environmental-friendly, Manufacture, Nutrient medium, Nutrients, Precipitation (chemical), Repair, Superabsorbent polymer

Abstract:

<p>Concrete usage in Construction becomes more common in this speedy world. Despite its benefits, concrete often exhibits crack which appear due to stresses. Larger cracks cause Structural integrity problems and smaller cracks may result in durability issues. A novel environmental friendly strategy to restore or remediate cracks formed in the structures is bio-mineralization of calcium carbonate using microbes such as Bacillus Subtilis (used in this study), as manual repair and maintenance is costly. In this Paper, an idea of using Super Absorbent Polymer in Bacterial Concrete was analysed which increases the strength and durability properties of concrete and also which acts as a protection to bacteria, where Self-Healing nature is viewed. In the span of 90 days, the results of Bacterial concrete cured under normal water providing nutrients inside with SAP shows healing up to 74 % and without SAP displays 49 % and when it is cured under nutrient medium, Bacterial Concrete having SAP displays healing up to 66 %, whereas without SAP it displays 57.4% of healing. During the observation it is discernible that the crack width ranging from 0.10 mm near 0.45 mm show better self-healing capacity. XRD analysis displays the presence of Calcium carbonate precipitation in cracks. © Published under licence by IOP Publishing Ltd.</p>

Notes:

cited By 0; Conference of International Conference on Advances in Materials and Manufacturing Applications 2017, IConAMMA 2017 ; Conference Date: 17 August 2017 Through 19 August 2017; Conference Code:135135

Cite this Research Publication

M. G. Giriselvam, Poornima V., Venkatasubramani, R., and Sreevidya, V., “Enhancement of crack healing efficiency and performance of SAP in biocrete”, in IOP Conference Series: Materials Science and Engineering, 2018, vol. 310.