Mortar modified with sulfonated polystyrene produced from waste plastic cups

Leila Aparecida de Castro Motta; Júlia Graciele Vieira; Thiago Henrique Omena; Fernanda Alves Costa Faria; Guimes Rodrigues Filho; Rosana Maria Nascimento de Assunção

Leila Aparecida de Castro Motta Universidade Federal de Uberlândia/Faculdade de Engenharia Civil
Júlia Graciele Vieira Universidade Federal de Uberlândia/Faculdade de Engenharia Civil
Thiago Henrique Omena Universidade Federal de Uberlândia/Faculdade de Engenharia Civil
Fernanda Alves Costa Faria Universidade Federal de Uberlândia/Instituto de Química
Guimes Rodrigues Filho Universidade Federal de Uberlândia/Instituto de Química
Rosana Maria Nascimento de Assunção Universidade Federal de Uberlândia/Instituto de Química

Resumo

In this work was studied the addition of sulfonated polystyrene produced from waste plastic cups as admixture for mortars. Mortars were analyzed with polystyrene content of 0.0; 0.2; 0.6; 1.0 and 1.4% in relation to the cement mass. The influence of polystyrene in the mortars properties was evaluated by consistency index, water retention, water absorption, porosity, elasticity modulus, compressive strength, flexural strength, bond tensile strength and microscopy. In relation to mortar without admixture, modified mortar showed increase in water retention and consistency index, besides great increase in flexural strength and bond tensile strength. However, the increase in the sulfonated polystyrene content decreased elasticity modulus of the mortar and despite higher porosity, there was reduction of water absorption by capillarity.