Determination Compressive and Bending Strength of Porous Bodies from Plaster Reinforced with Polyacetate of Vinila (PVAc)

Aoliabe Pedro da Silva; Laudir de Castro Ferreira Neto; Nelson Cárdenas Olivier; Alessandra Félix da Costa Pereira; Alan Christie da Silva Dantas

doi:10.4028/www.scientific.net/MSF.958.53

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HomeMaterials Science ForumMaterials Science Forum Vol. 958Determination Compressive and Bending Strength of...

Determination Compressive and Bending Strength of Porous Bodies from Plaster Reinforced with Polyacetate of Vinila (PVAc)

Abstract:

Calcium sulfate dehydrate β (CaSO₄. 0,5H₂O) is a material obtained from the calcination of gypsite (CaSO₄.2H₂O). This is a low cost ceramic material very used in building industry. The improvement of their applications is of fundamental technological interest. Polymers are an interesting alternative of reinforcement. Polyvinyl acetate (PVAc) is an addition polymer obtained by the polymerization of vinyl acetate. This polymer is well known to achieve good adhesion to cellulosic surfaces. The aim of this work was to evaluate the mechanical properties of porous plaster bodies reinforced with PVAc. Mechanical behavior was characterized by compression and bending strength. Three water / gypsum ratios: 0.5 0.6 and 0.7 were used on this work. An amount of 5% and 10% PVAc promoted increase on the mechanical properties of gypsum. Higher amounts polymer promoted further decrease of the mechanical properties.

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Periodical:

Materials Science Forum (Volume 958)

Pages:

53-56

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.958.53

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Online since:

June 2019

Authors:

Aoliabe Pedro da Silva*, Laudir de Castro Ferreira Neto, Nelson Cárdenas Olivier, Alessandra Félix da Costa Pereira, Alan Christie da Silva Dantas

Keywords:

Compression, Flexure, Plaster, Porosity, Vinyl Acetate (PVAc)

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