Chloride-binding capacity of mortars composed of marine sand subjected to external chloride penetration
Sun, Congtao1,4,5; Sun, Ming1,2,4; Tao, Tao3; Qu, Feng3; Wang, Gongxun3; Zhang, Peng2; Li, Yantao1; Duan, Jizhou1
2022-05-31
发表期刊JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
页码10
通讯作者Sun, Congtao(suncongtao@qdio.ac.cn) ; Qu, Feng()
摘要In order to explore the interactional relations of internal chloride and external chloride-binding amongst the cementitious materials, the chloride-binding capacity of mortars composed of marine sand (MS) or washed marine sand (WMS) were investigated. Results indicate that more external chloride can penetrate and diffuse more deeply into the WMS mortar than that in the MS mortar. This phenomenon suggests that the external chloride migration resistance due to WMS is lower than that caused by MS. The distribution trends of the bound chloride content in the two types of mortars are the same at different immersion times. However, a significantly decreased area of the bound chloride content exists at the border of the external penetration area (EPA) and the external unaffected area (EUA) at the immersion ages of 3 and 7 d, and then it disappears gradually with immersion time. The WMS mortar can bind more external chloride, whereas the MS mortar can bind more internal chloride, at different immersion times. The distributions of bound chloride conversion rate in the EPAs of the two types of mortars differ across immersion times. The distribution firstly decreases, and then it increases at the immersion ages of 3 and 7 d. The distribution was from increase, then decreases, and increase again at the immersion ages of 28 and 56 d. The bound chloride conversion rate in the WMS mortar is affected more greatly by external chloride penetration than that in the MS mortar. The amounts of the Friedel's salt tend to increase with prolonged immersion time. Finally, the penetration of external chloride can increase the amount of fine capillary pores smaller than 100 nm in the WMSmortar exposed for 56 d in the chloride salt solution (WMS-E) specimen.
关键词marine sand mortar chloride binding Friedel's salt pore structure
DOI10.1007/s00343-021-1144-4
收录类别SCI
语种英语
资助项目Natural Science Key Foundation of Shandong Province[ZR2020KE046] ; National Natural Science Foundation of China[41827805] ; Basic Science Research Project of Nantong City[JC2020125] ; Strategic Priority Project of CAS[XDA13040402]
WOS研究方向Marine & Freshwater Biology ; Oceanography
WOS类目Limnology ; Oceanography
WOS记录号WOS:000803813500005
出版者SCIENCE PRESS
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/179309
专题海洋环境腐蚀与生物污损重点实验室
通讯作者Sun, Congtao; Qu, Feng
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
2.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China
3.Hunan Univ Sci & Technol, Sch Civil Engn, Xiangtan 411201, Peoples R China
4.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China
5.Chinese Acad Sci, Nantong Res & Dev Ctr Marine Sci & Technol, Inst Oceanol, Nantong 226004, Peoples R China
第一作者单位中国科学院海洋研究所
通讯作者单位中国科学院海洋研究所
推荐引用方式
GB/T 7714
Sun, Congtao,Sun, Ming,Tao, Tao,et al. Chloride-binding capacity of mortars composed of marine sand subjected to external chloride penetration[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2022:10.
APA Sun, Congtao.,Sun, Ming.,Tao, Tao.,Qu, Feng.,Wang, Gongxun.,...&Duan, Jizhou.(2022).Chloride-binding capacity of mortars composed of marine sand subjected to external chloride penetration.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,10.
MLA Sun, Congtao,et al."Chloride-binding capacity of mortars composed of marine sand subjected to external chloride penetration".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2022):10.
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