Estudo preliminar da síntese de geopolímeros baseados em metacaulim, cinzas volantes e filito da Região Sudeste do Pará

This study presents a preliminary evaluation of the synthesis of geopolymers with raw materials and co-products from South and Southeast of Para State - Brazil, in which 4 formulations for mechanical strength evaluation through compressive strength tests were defined. The inputs initially chosen were: metakaolin, phyllite, steel slag and fly ash; the latter two being industrial co-products. In the preparation of the preliminary formulations, NaOH 12M solution was used as alkaline activator, as well as sodium silicate (Na2SiO3) as additive solution. Among the tested samples, two formulations obtained compressive strength of 20.5 and 21 MPa, with respectively 15 and 28 curing days, with the addition of sodium silicate.