Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analysis of cementitious matrices self-healing with bacillus bacteria
Abstract Bacterial solutions have been studied to promote self-healing of cementitious matrices, however, the concentration of this solutions varied between studies. Consequently, the objective of this study was to evaluate the self-healing potential of different concentrations of Bacillus subtilis AP91 encapsulated in expanded perlite (EP). Visual examination and capillary absorption of water was measured over time. Test samples were also subjected to strength resistance tests. The physiochemical properties of EP and his distribution on the matrix was evaluated. There was no observable trend in the effect of solution concentration on the width of crack healed. However, concentration affected the quantity and length of the fissures healed. Capillary absorption decreased as fissures were healed while no significant changes were measured in strength resistance regardless of the concentration. Results indicated that EP provided suitable encapsulation to the bacterial solution and there is an adequate distribution of the capsules in the cementitious matrix.
Analysis of cementitious matrices self-healing with bacillus bacteria
Abstract Bacterial solutions have been studied to promote self-healing of cementitious matrices, however, the concentration of this solutions varied between studies. Consequently, the objective of this study was to evaluate the self-healing potential of different concentrations of Bacillus subtilis AP91 encapsulated in expanded perlite (EP). Visual examination and capillary absorption of water was measured over time. Test samples were also subjected to strength resistance tests. The physiochemical properties of EP and his distribution on the matrix was evaluated. There was no observable trend in the effect of solution concentration on the width of crack healed. However, concentration affected the quantity and length of the fissures healed. Capillary absorption decreased as fissures were healed while no significant changes were measured in strength resistance regardless of the concentration. Results indicated that EP provided suitable encapsulation to the bacterial solution and there is an adequate distribution of the capsules in the cementitious matrix.
Analysis of cementitious matrices self-healing with bacillus bacteria
Vinicius Muller (Autor:in) / Fernanda Pacheco (Autor:in) / Caroline Macedo Carvalho (Autor:in) / Franciele Fernandes (Autor:in) / Victor Hugo Valiati (Autor:in) / Regina Celia Espinosa Modolo (Autor:in) / Hinoel Zamis Ehrenbring (Autor:in) / Bernardo Fonseca Tutikian (Autor:in)
2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
bacteria , concrete , durability , cracking , mortar , self-healing , Building construction , TH1-9745
Metadata by DOAJ is licensed under CC BY-SA 1.0
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Self-healing cementitious materials based on bacteria and nutrients immobilized respectively
| British Library Online Contents | 2016