Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsules
Abstract The objective of this work was to develop a chemical admixture to make concrete capable to heal its fissures autonomously and, consequently, mitigate the concrete’s reinforcement corrosion due to the ingress of aggressive agents. For that, polymeric microcapsules built by a shell of urea-fo...
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| Format: | Article |
| Language: | English |
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Instituto Brasileiro do Concreto (IBRACON)
2023-07-01
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| Series: | Revista IBRACON de Estruturas e Materiais |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952024000200208&lng=en&tlng=en |
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| author | Daniel Valerio Juliana Ferreira Fernandes Marcos Massao Futai Antonio Domingues de Figueiredo Idalina Vieira Aoki |
| author_facet | Daniel Valerio Juliana Ferreira Fernandes Marcos Massao Futai Antonio Domingues de Figueiredo Idalina Vieira Aoki |
| author_sort | Daniel Valerio |
| collection | DOAJ |
| description | Abstract The objective of this work was to develop a chemical admixture to make concrete capable to heal its fissures autonomously and, consequently, mitigate the concrete’s reinforcement corrosion due to the ingress of aggressive agents. For that, polymeric microcapsules built by a shell of urea-formaldehyde-melamine (UFM) and a core of methylmethacrylate were developed and added to the concrete to further evaluation. The concrete specimens containing 0%, 3% and 6% of the proposed microcapsules (mass of microcapsules / mass of cement) were subjected to destructive and non-destructive tests. The water absorption and the mechanical tests i.e., compressive strength and indirect tensile strength (Brazilian test) were carried out to characterize concrete, while the electrochemical impedance spectroscopy (EIS) and the non-destructive ultrasonic pulse velocity (UPV) tests were conducted to evaluate the concrete self-healing ability. These tests showed that the proposed admixture was able to heal the concrete’s fissures partially. In addition, it was concluded that the samples with 3% of microcapsules presented higher self-repairing rates. Despite the microcapsules developed in this work have presented a satisfactory self-healing efficiency, their effectiveness looks to be affected by the mixing procedure once part of them is broken during the process. |
| first_indexed | 2024-03-13T00:24:36Z |
| format | Article |
| id | doaj.art-db226e3d71eb40ad9fb254c13bced5de |
| institution | Directory Open Access Journal |
| issn | 1983-4195 |
| language | English |
| last_indexed | 2024-03-13T00:24:36Z |
| publishDate | 2023-07-01 |
| publisher | Instituto Brasileiro do Concreto (IBRACON) |
| record_format | Article |
| series | Revista IBRACON de Estruturas e Materiais |
| spelling | doaj.art-db226e3d71eb40ad9fb254c13bced5de2023-07-11T07:50:52ZengInstituto Brasileiro do Concreto (IBRACON)Revista IBRACON de Estruturas e Materiais1983-41952023-07-0117210.1590/s1983-41952024000200006Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsulesDaniel Valeriohttps://orcid.org/0000-0001-9853-6476Juliana Ferreira Fernandeshttps://orcid.org/0000-0002-3440-6223Marcos Massao Futaihttps://orcid.org/0000-0002-4969-3085Antonio Domingues de Figueiredohttps://orcid.org/0000-0003-4658-3355Idalina Vieira Aokihttps://orcid.org/0000-0002-8203-2625Abstract The objective of this work was to develop a chemical admixture to make concrete capable to heal its fissures autonomously and, consequently, mitigate the concrete’s reinforcement corrosion due to the ingress of aggressive agents. For that, polymeric microcapsules built by a shell of urea-formaldehyde-melamine (UFM) and a core of methylmethacrylate were developed and added to the concrete to further evaluation. The concrete specimens containing 0%, 3% and 6% of the proposed microcapsules (mass of microcapsules / mass of cement) were subjected to destructive and non-destructive tests. The water absorption and the mechanical tests i.e., compressive strength and indirect tensile strength (Brazilian test) were carried out to characterize concrete, while the electrochemical impedance spectroscopy (EIS) and the non-destructive ultrasonic pulse velocity (UPV) tests were conducted to evaluate the concrete self-healing ability. These tests showed that the proposed admixture was able to heal the concrete’s fissures partially. In addition, it was concluded that the samples with 3% of microcapsules presented higher self-repairing rates. Despite the microcapsules developed in this work have presented a satisfactory self-healing efficiency, their effectiveness looks to be affected by the mixing procedure once part of them is broken during the process.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952024000200208&lng=en&tlng=enself-healing concretenon-destructive testsdurabilityfissurescorrosion |
| spellingShingle | Daniel Valerio Juliana Ferreira Fernandes Marcos Massao Futai Antonio Domingues de Figueiredo Idalina Vieira Aoki Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsules Revista IBRACON de Estruturas e Materiais self-healing concrete non-destructive tests durability fissures corrosion |
| title | Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsules |
| title_full | Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsules |
| title_fullStr | Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsules |
| title_full_unstemmed | Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsules |
| title_short | Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsules |
| title_sort | non destructive tests for performance evaluation of self healing concrete by addition of methyl methacrylate containing microcapsules |
| topic | self-healing concrete non-destructive tests durability fissures corrosion |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952024000200208&lng=en&tlng=en |
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