Effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracks
This paper deals with the carbonation of concrete crack walls before and after healing in comparison to the carbonation of the bulk of the concrete. Natural carbonation tests were carried out on 50 MPa concrete. Disks with 50 mm thickness and 100 mm diameter were tested. A splitting test was applied...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | MATEC Web of Conferences |
| Subjects: | |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_06003.pdf |
| _version_ | 1797835221383512064 |
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| author | Pourhaji Pardis Serna Pedro Alonso Maria Cruz |
| author_facet | Pourhaji Pardis Serna Pedro Alonso Maria Cruz |
| author_sort | Pourhaji Pardis |
| collection | DOAJ |
| description | This paper deals with the carbonation of concrete crack walls before and after healing in comparison to the carbonation of the bulk of the concrete. Natural carbonation tests were carried out on 50 MPa concrete. Disks with 50 mm thickness and 100 mm diameter were tested. A splitting test was applied to generate the crack. Different crack widths were tested, narrow crack widths below 75μm, and wide crack widths, between 75-175μm. The self-healing effect was studied after immersion for 4 months in water. Natural carbonation was carried out at 55±5 %RH 20±3°C for 6, 9 and 12 months. The carbonation front was assessed after splitting and opening the crack walls. The results show the effect of the crack width, crack length and autogenous healing that affect the progression of carbonation in the crack walls. The carbonation in the crack wall is at least twice that of the concrete. Crack widths larger than 75μm carbonate faster. Autogenous healing of the narrow cracks can reduce the carbonation front at the crack walls with compare to the unhealed narrow; however, no improvement was observed in limiting the carbonation front in the crack walls of healed wide cracks. |
| first_indexed | 2024-04-09T14:50:42Z |
| format | Article |
| id | doaj.art-27dd9faca5b64d5eae6c4538088c7368 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-04-09T14:50:42Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-27dd9faca5b64d5eae6c4538088c73682023-05-02T09:34:12ZengEDP SciencesMATEC Web of Conferences2261-236X2023-01-013780600310.1051/matecconf/202337806003matecconf_smartincs2023_06003Effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracksPourhaji Pardis0Serna Pedro1Alonso Maria Cruz2Consejo Superior de Investigaciones Científicas, Instituto Eduardo Torroja de Ciencias de la Construcción (CSIC-IETcc)Instituto de Ciencia y Tecnología del Hormigón (ICITECH), Universitat Politècnica de ValènciaConsejo Superior de Investigaciones Científicas, Instituto Eduardo Torroja de Ciencias de la Construcción (CSIC-IETcc)This paper deals with the carbonation of concrete crack walls before and after healing in comparison to the carbonation of the bulk of the concrete. Natural carbonation tests were carried out on 50 MPa concrete. Disks with 50 mm thickness and 100 mm diameter were tested. A splitting test was applied to generate the crack. Different crack widths were tested, narrow crack widths below 75μm, and wide crack widths, between 75-175μm. The self-healing effect was studied after immersion for 4 months in water. Natural carbonation was carried out at 55±5 %RH 20±3°C for 6, 9 and 12 months. The carbonation front was assessed after splitting and opening the crack walls. The results show the effect of the crack width, crack length and autogenous healing that affect the progression of carbonation in the crack walls. The carbonation in the crack wall is at least twice that of the concrete. Crack widths larger than 75μm carbonate faster. Autogenous healing of the narrow cracks can reduce the carbonation front at the crack walls with compare to the unhealed narrow; however, no improvement was observed in limiting the carbonation front in the crack walls of healed wide cracks.https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_06003.pdfautogenous self-healingnon-accelerated carbonation testcarbonation frontcrack widthconcretecorrosion of reinforcement |
| spellingShingle | Pourhaji Pardis Serna Pedro Alonso Maria Cruz Effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracks MATEC Web of Conferences autogenous self-healing non-accelerated carbonation test carbonation front crack width concrete corrosion of reinforcement |
| title | Effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracks |
| title_full | Effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracks |
| title_fullStr | Effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracks |
| title_full_unstemmed | Effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracks |
| title_short | Effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracks |
| title_sort | effect of autogenous healing of narrow and wide cracks on the progression of carbonation in the walls of cracks |
| topic | autogenous self-healing non-accelerated carbonation test carbonation front crack width concrete corrosion of reinforcement |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_06003.pdf |
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