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Evaluation Of Strength Properties And Crack Mitigation Of Self- Healing Concrete

Last Update2019-08-27
TitleEvaluation Of Strength Properties And Crack Mitigation Of Self- Healing Concrete
Author(s)Author #1
Author title:
Name: Ramamohanrao Pannem
Org: Associate Professor, VIT University, Vellore, India

Author #2
Author title:
Name: Karthik Chintalapudi
Org: Assistant Professor, VNR Vijnanajyothi Institute of Engineering and Technology, Hyderabad, India

Other Author(s)
Contact AuthorAuthor #1
Alt Email:
KeywordsLight-weight concrete, Bacteria, SEM, Self-healing
AbstractSelf-healing concepts are being adopted for the enhancement of durability of concrete and the extension of service life of concrete structures. Bio-mineralization is an eco-friendly bio-process, which shows promising results in sealing micro-cracks by Microbially-Induced CaCO3 Precipitation (MICP). Introduction of specific bacteria into concrete with self-healing agent helps mediate MICP. Adopting greener alternatives and utilization of bi-products, such as fly ash which is used to prepare light-weight aggregates, reduces the demand for raw materials. A comparison between normal concrete and light-weight concrete is carried out to assess the ability of sealing cracks in concrete. Compressive strength, split tensile strength and crack width analysis were done for bacteria-based specimens. SEM and EDS analyses were also performed to investigate the calcite precipitation in concrete specimens and chemical deposition of bacterial concrete.
Paperview paper 4767.pdf (546KB)