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Zaprawa modyfikowana polistyrenem
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ISBN10: 6206816125
ISBN13: 9786206816126
Publisher: Wydawnictwo Nasza Wiedza
Published: Apr 30 2025
Pages: 68
Weight: 0.23
Height: 0.16 Width: 6.00 Depth: 9.00
Language: Polish
ISBN13: 9786206816126
Publisher: Wydawnictwo Nasza Wiedza
Published: Apr 30 2025
Pages: 68
Weight: 0.23
Height: 0.16 Width: 6.00 Depth: 9.00
Language: Polish
Praca przedstawia wyniki badań nad dodawaniem polistyrenu sulfonowanego, pochodzącego z wyrzuconych plastikowych kubków, jako dodatku do zapraw murarskich. Przeanalizowano zaprawy o zawartości polistyrenu wynoszącej 0,0; 0,2; 0,6; 1,0 i 1,4% w stosunku do masy cementu. Zastosowano cement Portland CPV - ARI i piasek plukany w proporcji 1:4 w masie. Aby ocenic wplyw dodatku polistyrenu na wlaściwości zapraw, określono wskaźnik konsystencji, retencji i absorpcji wody, wskaźnik porowatości, modul sprężystości statycznej, wytrzymalośc na ściskanie, wytrzymalośc na zginanie i potencjalną przyczepnośc przy zginaniu. W porównaniu z zaprawą bez dodatku, zaprawa modyfikowana wykazala wzrost przyczepności przy rozciąganiu, wytrzymalości na rozciąganie przy zginaniu, porowatości, konsystencji, absorpcji i retencji wody. Jednak wzrost zawartości polistyrenu sulfonowanego prowadzi do zmniejszenia modulu sprężystości, gęstości i absorpcji wody przez kapilarnośc, co może wskazywac, że wzrost liczby porów w zaprawie nie powoduje ich wzajemnej komunikacji, a warstwa polimerowa przyczynia się do poprawy wlaściwości mechanicznych.
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