Durability of concrete with nano-particles under combined action of carbonation and alkali silica reaction
Subway concrete is easy to be attacked by carbonation in the relatively closed space, and alkali silica reaction (ASR) is a serious durability problem of concrete, which is difficult to find and repair. The damage caused by carbonation and ASR seriously affects the durability of subway concrete. Two...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-09-01
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| Series: | Journal of Asian Architecture and Building Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/13467581.2019.1677470 |
| _version_ | 1797755694673297408 |
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| author | Maohua Zhang Wenyue Zhang Yanyu Sun |
| author_facet | Maohua Zhang Wenyue Zhang Yanyu Sun |
| author_sort | Maohua Zhang |
| collection | DOAJ |
| description | Subway concrete is easy to be attacked by carbonation in the relatively closed space, and alkali silica reaction (ASR) is a serious durability problem of concrete, which is difficult to find and repair. The damage caused by carbonation and ASR seriously affects the durability of subway concrete. Two kinds of nano-particles (nano-SiO2 and nano-Fe2O3) are mixed into plain subway concrete in this paper, and their effects on the durability of concrete under the combined action of carbonation and ASR are studied experimentally. The test results show that, after mixing with nano-particles, the carbonation depth and expansion of subway concrete are decreased, as well as the sonic velocity of subway concrete is increased obviously, which demonstrate the durability of subway concrete with nano-particles is better than plain subway concrete. The enhancement of durability is due to the special physical and chemical properties of nanoparticles, which can improve the microstructure of concrete and the chemical composition of pore solution in concrete. |
| first_indexed | 2024-03-12T17:50:53Z |
| format | Article |
| id | doaj.art-c75810bfc86648c5802f370a4807bbad |
| institution | Directory Open Access Journal |
| issn | 1347-2852 |
| language | English |
| last_indexed | 2024-03-12T17:50:53Z |
| publishDate | 2019-09-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Architecture and Building Engineering |
| spelling | doaj.art-c75810bfc86648c5802f370a4807bbad2023-08-03T09:07:49ZengTaylor & Francis GroupJournal of Asian Architecture and Building Engineering1347-28522019-09-0118542142910.1080/13467581.2019.16774701677470Durability of concrete with nano-particles under combined action of carbonation and alkali silica reactionMaohua Zhang0Wenyue Zhang1Yanyu Sun2Northeast Forestry UniversityNortheast Forestry UniversityNortheast Forestry UniversitySubway concrete is easy to be attacked by carbonation in the relatively closed space, and alkali silica reaction (ASR) is a serious durability problem of concrete, which is difficult to find and repair. The damage caused by carbonation and ASR seriously affects the durability of subway concrete. Two kinds of nano-particles (nano-SiO2 and nano-Fe2O3) are mixed into plain subway concrete in this paper, and their effects on the durability of concrete under the combined action of carbonation and ASR are studied experimentally. The test results show that, after mixing with nano-particles, the carbonation depth and expansion of subway concrete are decreased, as well as the sonic velocity of subway concrete is increased obviously, which demonstrate the durability of subway concrete with nano-particles is better than plain subway concrete. The enhancement of durability is due to the special physical and chemical properties of nanoparticles, which can improve the microstructure of concrete and the chemical composition of pore solution in concrete.http://dx.doi.org/10.1080/13467581.2019.1677470subway concretenano-particlescarbonationalkali silica reactioncombined action |
| spellingShingle | Maohua Zhang Wenyue Zhang Yanyu Sun Durability of concrete with nano-particles under combined action of carbonation and alkali silica reaction Journal of Asian Architecture and Building Engineering subway concrete nano-particles carbonation alkali silica reaction combined action |
| title | Durability of concrete with nano-particles under combined action of carbonation and alkali silica reaction |
| title_full | Durability of concrete with nano-particles under combined action of carbonation and alkali silica reaction |
| title_fullStr | Durability of concrete with nano-particles under combined action of carbonation and alkali silica reaction |
| title_full_unstemmed | Durability of concrete with nano-particles under combined action of carbonation and alkali silica reaction |
| title_short | Durability of concrete with nano-particles under combined action of carbonation and alkali silica reaction |
| title_sort | durability of concrete with nano particles under combined action of carbonation and alkali silica reaction |
| topic | subway concrete nano-particles carbonation alkali silica reaction combined action |
| url | http://dx.doi.org/10.1080/13467581.2019.1677470 |
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