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Chloride-Binding Capacity of Portland Cement Paste Blended with Synthesized CA(2) (CaO center dot 2Al(2)O(3))

Title
Chloride-Binding Capacity of Portland Cement Paste Blended with Synthesized CA(2) (CaO center dot 2Al(2)O(3))
Author
이한승
Keywords
CALCIUM ALUMINATE CEMENT; LAYERED DOUBLE HYDROXIDES; FRIEDELS SALT; HYDRATION; CONCRETE; MECHANISM; KINETICS; MORTARS; PHASES; IONS
Issue Date
2018-03
Publisher
HINDAWI LTD
Citation
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, No. 2018, Article no. 5418930
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.
URI
https://www.hindawi.com/journals/amse/2018/5418930/abs/http://repository.hanyang.ac.kr/handle/20.500.11754/99158
ISSN
1687-8434; 1687-8442
DOI
10.1155/2018/5418930
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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