Microbiological Induced Calcium Carbonate Process to Enhance the Properties of Cement Mortar

Presence of pores and cracks in the structure allows the ingress of harmful chemicals, gases and moisture ultimately threatening to the service life of the structure. Common remediation to this problem is to fill these voids and cracks with synthetic polymers which results in aesthetic impairment. T...

Full description

Saved in:
Bibliographic Details
Main Authors: Saxena, Shekhar, Tembhurkar, Ajay R.
Format: Conference Proceeding
Language:English
Subjects:
Bacteria
Cement Mortar
Compressive Strength
Durability
Microstructure
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Presence of pores and cracks in the structure allows the ingress of harmful chemicals, gases and moisture ultimately threatening to the service life of the structure. Common remediation to this problem is to fill these voids and cracks with synthetic polymers which results in aesthetic impairment. The present research focuses on developing a cement bio-mortar through Microbially Induced Calcium Carbonate Precipitation (MICCP) process. The research results indicate an increase of 28.3% in strength of mortar and 12% reduction in water absorption. The present biotechnological approach, if adopted would not only help to fill the pores and cracks and protect the service life but also provides no aesthetic impairment to the structure. SEM and XRD analysis are also done to have better insight into the process and the precipitates of calcium carbonate in the pores
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2020.01.173