Effect of duration and pressure of carbonation curing on the chloride profile in concrete
Abstract Carbonation curing alters the characteristics of the concrete's microstructure and can interfere with the penetration of aggressive ions. The objective of this article was to evaluate the influence of CO2 pressure and carbonation cure time on chloride profiles. Concrete specimens were...
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Instituto Brasileiro do Concreto (IBRACON)
2023-04-01
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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=S1983-41952023000600201&lng=en&tlng=en |
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| author | Roberto Luiz Dias Neusa Aparecida Munhak Beltrame Jordi Rius Gonzalez Ronaldo Alves Medeiros-Junior |
| author_facet | Roberto Luiz Dias Neusa Aparecida Munhak Beltrame Jordi Rius Gonzalez Ronaldo Alves Medeiros-Junior |
| author_sort | Roberto Luiz Dias |
| collection | DOAJ |
| description | Abstract Carbonation curing alters the characteristics of the concrete's microstructure and can interfere with the penetration of aggressive ions. The objective of this article was to evaluate the influence of CO2 pressure and carbonation cure time on chloride profiles. Concrete specimens were cured by carbonation with CO2 pressures ranging from 5 to 25 Psi, for a time within the carbonation chamber of 8, 24, and 36 hours. These concretes were subjected to 30 wetting and drying cycles in NaCl solution to stimulate the chloride ingress. The carbonation depth and the microstructure of the concrete were monitored over time. Chloride profiles were obtained and modeled by 4 mathematical equations. The results showed that the combination of less time and CO2 pressure during carbonation curing potentiated the reduction of chloride penetration in concrete. Also, the carbonation curing conditions of 5 and 10 Psi for 8 hours reduced the chloride diffusion coefficient. |
| format | Article |
| id | doaj-art-b332a39cb6964d68afe826060569eddc |
| institution | Kabale University |
| issn | 1983-4195 |
| language | English |
| publishDate | 2023-04-01 |
| publisher | Instituto Brasileiro do Concreto (IBRACON) |
| record_format | Article |
| series | Revista IBRACON de Estruturas e Materiais |
| spelling | doaj-art-b332a39cb6964d68afe826060569eddc2025-02-11T07:42:34ZengInstituto Brasileiro do Concreto (IBRACON)Revista IBRACON de Estruturas e Materiais1983-41952023-04-0116610.1590/s1983-41952023000600003Effect of duration and pressure of carbonation curing on the chloride profile in concreteRoberto Luiz Diashttps://orcid.org/0009-0007-9898-1845Neusa Aparecida Munhak Beltramehttps://orcid.org/0000-0001-7240-4344Jordi Rius Gonzalezhttps://orcid.org/0000-0002-1326-1635Ronaldo Alves Medeiros-Juniorhttps://orcid.org/0000-0003-4879-4869Abstract Carbonation curing alters the characteristics of the concrete's microstructure and can interfere with the penetration of aggressive ions. The objective of this article was to evaluate the influence of CO2 pressure and carbonation cure time on chloride profiles. Concrete specimens were cured by carbonation with CO2 pressures ranging from 5 to 25 Psi, for a time within the carbonation chamber of 8, 24, and 36 hours. These concretes were subjected to 30 wetting and drying cycles in NaCl solution to stimulate the chloride ingress. The carbonation depth and the microstructure of the concrete were monitored over time. Chloride profiles were obtained and modeled by 4 mathematical equations. The results showed that the combination of less time and CO2 pressure during carbonation curing potentiated the reduction of chloride penetration in concrete. Also, the carbonation curing conditions of 5 and 10 Psi for 8 hours reduced the chloride diffusion coefficient.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952023000600201&lng=en&tlng=encarbonation curingCO2 pressurecuring timechloride profilesmodeling |
| spellingShingle | Roberto Luiz Dias Neusa Aparecida Munhak Beltrame Jordi Rius Gonzalez Ronaldo Alves Medeiros-Junior Effect of duration and pressure of carbonation curing on the chloride profile in concrete Revista IBRACON de Estruturas e Materiais carbonation curing CO2 pressure curing time chloride profiles modeling |
| title | Effect of duration and pressure of carbonation curing on the chloride profile in concrete |
| title_full | Effect of duration and pressure of carbonation curing on the chloride profile in concrete |
| title_fullStr | Effect of duration and pressure of carbonation curing on the chloride profile in concrete |
| title_full_unstemmed | Effect of duration and pressure of carbonation curing on the chloride profile in concrete |
| title_short | Effect of duration and pressure of carbonation curing on the chloride profile in concrete |
| title_sort | effect of duration and pressure of carbonation curing on the chloride profile in concrete |
| topic | carbonation curing CO2 pressure curing time chloride profiles modeling |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952023000600201&lng=en&tlng=en |
| work_keys_str_mv | AT robertoluizdias effectofdurationandpressureofcarbonationcuringonthechlorideprofileinconcrete AT neusaaparecidamunhakbeltrame effectofdurationandpressureofcarbonationcuringonthechlorideprofileinconcrete AT jordiriusgonzalez effectofdurationandpressureofcarbonationcuringonthechlorideprofileinconcrete AT ronaldoalvesmedeirosjunior effectofdurationandpressureofcarbonationcuringonthechlorideprofileinconcrete |