The effect of granulated fly ashes with phosphogypsum on the hardening of cement mortar

• Autorzy: Borowski G. , Hycnar J. J.

Identyfikatory

DOI

10.4467/2353737XCT.16.156.5767

Warianty tytułu

PL

Wływ granulowanych popiołów lotnych z fosfogipsem na proces twardnienia zaprawy cementowej

• Języki publikacji: EN

Abstrakty

EN

The results of research on the use of granulated fly ashes with phosphogypsum in the production of cement and their impact on the hardening of cement mortar are presented in this paper. The materials used for the production of granules were fly ash from power plants and a twenty-percent proportion of phosphogypsum waste from the production of phosphoric acid. The granules were tested in terms of their use for the production of cement. It has been shown that, in accordance with the Polish Standard PN-EN 197-1: 2012, cement with 20% of shredded granules meets the requirements of strength for class 32.5. Cement mortar was made and the properties were compared with typical mortar prepared from ash with gypsum. It was found that the tested cement mortar have a longer setting time. However, both types of mortar had similar compressive strengths and flexural strengths after hardening for twenty-eight days.

PL

W pracy przedstawiono wyniki badań wykorzystania granulowanych popiołów lotnych wraz z fosfogipsem do produkcji cementu oraz ich wpływu na proces twardnienia zaprawy. Materiałem do produkcji granulatu były elektrowniane popioły lotne z 20% udziałem odpadowych fosfogipsów powstających przy produkcji kwasu fosforowego. Wykonano testy wytrzymałościowe granulatu w aspekcie jego wykorzystania do produkcji cementu. Stwierdzono, że zgodnie z polską normą cement z 20% udziałem granulatu zawierającego fosfogipsy spełnia wymagania wytrzymałościowe cementu dla klasy 32,5. Wytworzono zaprawę cementową oraz określono właściwości w porównaniu do typowej zaprawy z cementu popiołowo-gipsowego. Stwierdzono, że testową zaprawę charakteryzuje dłuższy czas wiązania i twardnienia. Jednakże oba rodzaje zaprawy uzyskały porównywalną wytrzymałość na zginanie i ściskanie po 28 dniach twardnienia.

Słowa kluczowe

EN

fly ash; phosphogypsum; granulation; cement; mortar

PL

popioły lotne; fosfogipsy; granulowanie; cement; zaprawa

• Wydawca: Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki
• Czasopismo: Czasopismo Techniczne. Budownictwo
• Rocznik: 2016
• Tom: Y. 113, iss. 2-B
• Strony: 37--45
• Opis fizyczny: Bibliogr. 24 poz., tab.

Twórcy

autor

Borowski G.

• Environmental Engineering Faculty, Lublin University of Technology

autor

Hycnar J. J.

• Ecocoal Consulting Center, Katowice

Bibliografia

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