Initial study of geopolymers made from clays

Abstract

this article describes an initial study of the generation of geo-polymers associating comparatively reaction geopolimérica kaolin reported by several authors and a local ceramic clay. the geo-polymer binder material in the future could replace traditional building materials such as cement, block and others with low environmental impact in their production and use, in addition to greater mechanical and chemical resistance.

The fluorescence analysis and diffractometry RX kaolin and ceramic clay yielded information both chemical similarities and mineralogy of raw materials, broke kaolin with a siO2 / al2O3 ratio of 1.2 to verify chemical concentrations activator generating a matrix with experimental ions Na + 1, K + 1, Al + 3, Si-2 in an alkaline medium. the reactivity between the alkali ions and silicate ion showed start geo-polymerization reaction both kaolin clay and pottery whereas the siO2 / al2O3 ratio is 1.78 clay. Briquettes test is developed with both raw materials that were treated with the activating solution developed in the fi rst part of the study. The tests gave results as briquettes waterproof 5 hours of curing and resistance up to 32 megabytes in pascals compression tests.