Manufacture of bricks based on sludge from mine tailings.

Abstract:

The search for sustainable applications for gold residues in the Ecuadorian rainforest has led to the development of the present research, which involves the use of mine tailings to develop a technologically improved brick from environmentally friendly alkaline (geopolymerization), present good physical and mechanical characteristics, and high durability over time. To accomplish this objective, three stages were developed: characterization of the raw material, selection of the activating solution and factors to be intervened in the process (temperature, molar concentration, solution content) for further analysis and mechanical characterization of disks made by combinations of the factors selected through the use of the diametrical compression test using the Brazilian Test (BT) this test allowed to optimize time and resources in the development of normal sized bricks. The results show that the solution content, the molar concentration and the curing temperature are key factors for the development of the chemical process, because they provide the element with a satisfactory mechanical behavior. Amolar concentration of 15, a solution content of 26% and a temperature of 120 C, proved to be the optimum blend for the manufacture of bricks making mine tailings a potential candidate for the manufacture of eco-friendly bricks.

Año de publicación:

2017

Keywords:

Fuente:

google