Determination of the calcium sulfate hemihydrate content by regression analysis using the initial setting time

• Autorzy: Li Bing

Identyfikatory

DOI

10.24425/ace.2020.131818

• Języki publikacji: EN

Abstrakty

EN

In this paper, we randomly select 75 sets data of calcium sulfate hemihydrate (CSH) content and initial setting time, and the traditional test method of CSH and analyses initial setting time was used by complexometric titration. So the close relationship between them was studied in depth, which classification fitting data to be analyzed by regression analysis. The result shows that this regression analysis method can accurately determine CSH content in modified industrial by-product gypsum. The determination method has the advantages of simplification and rapid operation. As well as, the XRF quantitative analytical method was used to test the CSH content, which verified the accuracy of regression analysis method. The results also show that this method has high accuracy, and can simplify the traditional experimental process. The method developed is easier and more convenient and has broad prospects in application.

Słowa kluczowe

EN

gypsum; modification; setting time; regression analysis; calcium sulfate hemihydrate

PL

gips; modyfikacja; czas wiązania; analiza regresji; hemihydrat siarczanu wapnia

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2020
• Tom: Vol. 66, nr 2
• Strony: 421--437
• Opis fizyczny: Bibliogr. 7 poz., il., tab.

Twórcy

autor

Li Bing

• Dept. of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, China

Bibliografia

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• 4. Dong-sheng Liu, Chao-qiang Wang, Xu-dong Mei, Chun Zhang, “An effective treatment method for phosphogypsum”, Environ Sci Pollut R. 26: 30533-30539, 2019.
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• 6. Leškevičiene, V., Nizevičiene, D, “Influence of the setting activators on the physical mechanical properties of phosphoanhydrite”, Chem. Ind. Chem. Eng. Q20(2): 233-240, 2014.
• 7. YY/ T 1118-2001, Plaster of pairs bandage-Viscose form, 2001, Pharmaceutical Industry Standards of the People’s Republic of China, Beijing, China.