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Preliminary tests for application of carbon nanotubes and Bacillus sphaericus bacteria in self-healing cement mortars

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Self-healing in concrete is a popular and developing topic, which utilizes both biotic and abiotic mechanisms to close micro-cracks. Nano additives such as carbon nanotubes (CNT) improve the cement material's resistance to cracks but could also influence the survivability of microorganisms in concrete. A combination of CNT and calcium carbonate precipitating bacteria might lead to both improvement of concrete's durability and provide self-healing properties, while increasing the survivability of the microorganisms in the environment of the cement-based material. The presented research focuses on preliminary tests of the influence of the Bacillus sphaericus bacteria and low addition of CNT on the cement mortar's strength and survivability of microorganisms in the environment of cement matrix. Strength tests and biotic control were performed to provide data to modify the mix for further tests concerning mechanical properties and survival of microorganisms.

Original languageEnglish
Title of host publicationIABSE Symposium Manchester 2024
Subtitle of host publicationConstruction's Role for a World in Emergency
PublisherInternational Association for Bridge and Structural Engineering (IABSE)
Pages769-774
Number of pages6
ISBN (Electronic)9783857482045
Publication statusPublished - 2024
EventIABSE Symposium Manchester 2024: Construction's Role for a World in Emergency - Manchester, United Kingdom
Duration: 10 Apr 202412 Apr 2024

Publication series

NameIABSE Symposium Manchester 2024: Construction's Role for a World in Emergency

Conference

ConferenceIABSE Symposium Manchester 2024: Construction's Role for a World in Emergency
Country/TerritoryUnited Kingdom
CityManchester
Period10/04/2412/04/24

Keywords

  • Bacillus sphaericus
  • carbon nanotubes
  • cement mortars
  • cementitious composite
  • self-healing

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality
  • Management of Technology and Innovation

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