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Malta modificata con polistirolo
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ISBN10: 620681615X
ISBN13: 9786206816157
Publisher: Edizioni Sapienza
Published: Apr 30 2025
Pages: 68
Weight: 0.23
Height: 0.16 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786206816157
Publisher: Edizioni Sapienza
Published: Apr 30 2025
Pages: 68
Weight: 0.23
Height: 0.16 Width: 6.00 Depth: 9.00
Language: Italian
Il lavoro presenta i risultati dello studio sull'aggiunta di polistirene solfonato, proveniente da bicchieri di plastica usa e getta, come additivo nelle malte. Sono state analizzate malte con tenori di polistirene pari a 0,0; 0,2; 0,6; 1,0 e 1,4% rispetto alla massa di cemento. È stato utilizzato cemento Portland CPV - ARI e sabbia lavata in rapporto 1:4 in massa. Per valutare l'influenza dell'aggiunta di polistirolo sulle proprietà delle malte, sono stati determinati l'indice di consistenza, la ritenzione e l'assorbimento d'acqua, l'indice di vuoti, il modulo di elasticità statico, la resistenza alla compressione, la resistenza alla trazione in flessione e la resistenza potenziale all'aderenza alla trazione. Rispetto alla malta senza additivi, la malta modificata ha dimostrato un aumento della resistenza all'aderenza alla trazione, della resistenza alla trazione in flessione, della porosità , della consistenza, dell'assorbimento e della ritenzione idrica. Tuttavia, l'aumento del contenuto di polistirene solfonato porta ad una riduzione del modulo di elasticità , della massa specifica e dell'assorbimento d'acqua per capillarità , il che può indicare che l'aumento del numero di pori nella malta non ha intercomunicazione e che il film polimerico contribuisce all'aumento delle proprietà meccaniche.
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