Chloride-Binding Capacity of Portland Cement Paste Blended with Synthesized CA(2) (CaO center dot 2Al(2)O(3))open access
- Authors
- Lee, Yunsu; Kim, Mingyun; Chen, Zhengxin; Lee, Hanseung; Lim, Seungmin
- Issue Date
- Apr-2018
- Publisher
- Hindawi Publishing Corporation
- Keywords
- CALCIUM ALUMINATE CEMENT; LAYERED DOUBLE HYDROXIDES; FRIEDELS SALT; HYDRATION; CONCRETE; MECHANISM; KINETICS; MORTARS; PHASES; IONS
- Citation
- Advances in Materials Science and Engineering, v.2018, pp.1 - 11
- Indexed
- SCIE
SCOPUS
- Journal Title
- Advances in Materials Science and Engineering
- Volume
- 2018
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/7997
- DOI
- 10.1155/2018/5418930
- ISSN
- 1687-8434
- Abstract
- A chloride-binding capacity is the major factor to mitigate the ingress of chloride into concrete. ( is paper presents the chloride-binding capacity of Portland cement paste containing synthesized CA(2) (CaO center dot 2Al(2)O(3)). The CA(2) was synthesized in the high-temperature furnace and characterized by X-ray diffraction for inspecting the purity. The synthesized CA(2) was substituted for Portland cement by 0%, 5%, and 10% by weight, and the NaCl solution was used as an internal chloride, which is assumed as a total chloride. The chloride-binding capacity of cement paste was calculated from a water-soluble chloride extraction method by the application of the Langmuir isotherm equation. And the hydration products were analyzed using X-ray diffraction and thermogravimetric analysis. We demonstrate that the CA(2) increases an AFm phase in the Portland cement system, and the incorporation of CA(2) consequently enhances the chloride-binding capacity of cement paste samples.
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