دورية أكاديمية
EFFECT OF SULFATE ON THE CHLORIDE DIFFUSION BEHAVIOR OF CORAL AGGREGATE CONCRETE IN THE MARINE TIDE ZONE
| العنوان: | EFFECT OF SULFATE ON THE CHLORIDE DIFFUSION BEHAVIOR OF CORAL AGGREGATE CONCRETE IN THE MARINE TIDE ZONE |
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| المؤلفون: | Daguan Huang, Ditao Niu, Su Li, Peng Gang, Xia Qian, Liu Yunhe |
| المصدر: | Ceramics-Silikáty, Vol 67, Iss 1, Pp 37-46 (2023) |
| بيانات النشر: | University of Chemistry and Technology, Prague, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Clay industries. Ceramics. Glass |
| مصطلحات موضوعية: | coral aggregate concrete, chloride, sulfate, combined action, erosion mechanism, Clay industries. Ceramics. Glass, TP785-869 |
| الوصف: | This paper studied the effect of sulfate on chloride diffusion behavior in coral aggregate concrete (CAC) in marine tide zone. Three water/binder ratios of CAC were designed for experimental analysis, and the mechanism of the effect of sulfate on chloride transport was investigated by different microscopic experimental methods. The test results show that the chloride content decreases with the decrease of water/binder ratio of CAC. At an equal number of drying-wetting cycles, the chloride content under the combined action of chloride and sulphate is lower than that under the sole action of chloride. The change of peak chloride content with time showed a linear function with the square root of erosion time, while the chloride diffusion coefficient gradually decreased with erosion time. Adding silica fume to CAC effectively reduced the chloride diffusion coefficient, with a decrease of 26.1%∼46.2%. The attenuation coefficient of CAC under chloride erosion was 16.4%∼38.1% higher than that under the combined action of chloride and sulfate. The chloride diffusion model was established, and the error between the calculated value of the model and the experimental value was within 16%. Microscopic observations revealed that in the early stage of erosion, the sulfate erosion products ettringite and gypsum had a compacting effect on the CAC, but in the late stage of erosion, they produced expansion cracks, which accelerated the deterioration of CAC. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0862-5468 1804-5847 |
| Relation: | http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1607; https://doaj.org/toc/0862-5468; https://doaj.org/toc/1804-5847 |
| DOI: | 10.13168/cs.2022.0058 |
| URL الوصول: | https://doaj.org/article/0c3972ccd012464e9ccea3a6ce781593 |
| رقم الأكسشن: | edsdoj.0c3972ccd012464e9ccea3a6ce781593 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 08625468 18045847 |
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| DOI: | 10.13168/cs.2022.0058 |