A autocura do concreto - uma revisão bibliográfica
Concrete is the most used material in civil construction due to its advantageous properties compared to other materials, such as resistance to compression and molding capacity in different formats. However, a setback in this material is recurrent cracking, which requires maintenance costs (som...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/50143 |
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| Resumo: | Concrete is the most used material in civil construction due to its advantageous
properties compared to other materials, such as resistance to compression and molding capacity
in different formats. However, a setback in this material is recurrent cracking, which requires
maintenance costs (sometimes expensive), and compromises strength and durability. The
objective of this work is to carry out a bibliographical review, analyze and compare methods
studied of a concrete with crack healing capacity, self-healing, without recovery intervention
and/or structural reinforcement. Articles were used from searches on Google Academic,
Science Direct and Research Gate websites, obtaining a total of 40 articles used for the scope
of work. The definition of self-healing, classifications regarding the material approach
strategies, and the most used methods were studied, such as concrete with the use of bacteria,
expansive minerals and enzymes in its composition. In addition, a discussion was carried out in
relation to the studied methods, with a note of their comparative advantages and disadvantages,
verifying the bioconcrete, through the use of the bacteria Bacillus pseudofirmus and the
concrete with the insertion of the enzyme carbonic anhydrase as the methods with better
effectiveness in the healing. It is concluded that, through the analysis of the articles, in general,
all methods are satisfactory in performing self-healing of fissures; however, concrete using
bacteria and enzymes are the most relevant and promising methods due to their durability and
healing speed. The financial barrier is the biggest obstacle to the dissemination of methods in
civil construction. |
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