Argamassa modificada com poliestireno sulfonado a partir de copos plásticos descartados

• Autor(a) principal: Omena, Thiago Henrique
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFU
• Texto Completo: https://repositorio.ufu.br/handle/123456789/14177
• topic: Argamassa modificada; Aditivo polimérico; Poliestireno sulfonado; Reciclagem; Argamassa; Poliestireno; Reaproveitamento (Sobras, refugos, etc); Mortar modified; Polymeric additive; Sulfonated polystyrene; Recycling; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL

The presents study results of the addition of sulfonated polystyrene, derived from discarded plastic cups as additive in mortars. The mortar were studied with polystyrene content of 0.0, 0.2, 0.6, 1.0 and 1.4% (relative to the mass of cement). CPV - ARI Portland cement and sand washed were used at rate 1:4 by weight. It was determined consistency index, water retention, water absorption, void index, static modulus of elasticity, compressive strength, tensile strength in bending and adhesion. The mortar modified with the additive showed increase in the porosity, tensile strength in bending, adhesion, plastic capacity and water retention. Furthermore the use of polystyrene leads to decrease in the density, the modulus of elasticity and in the capillary water absorption with increasing content of sulfonated polystyrene, which may indicate that even by increasing the number pores in the mortar, the pores are not communicated among themselves and the polymeric film had contributed for the mechanical properties.