Micropilot Scale Testing of Advanced Inorganic Materials Obtained from Wastes

Traditional building materials have a major contribution to carbon emissions, consumption of natural resources, all these affecting environmental. To avoid the disadvantages that come from the cement industry, one strategy could be to use alternative materials as substitutes for cement-based materials. In plus these materials can be obtaining from by products, secondary sources of silicates and aluminates. In the present study, a characterization of the materials obtained following the activation of some aluminosilicate wastes with an alkaline mixture consisting of KOH and Na2SiO3 in different mass ratios will be carried out. KOH solutions had molarities between 5-10 M. The tests that were carried out are: workability of the fresh material, density of the hardened material, mechanical properties, capillarity absorption and resistance in the acid, alkaline and salts environments. The results allow the best conditions to be established in order to manufacture suitable materials with the proper characteristics.