Estudio inicial de geo-polimeros a partir de arcillas
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Universidad Industrial de Santander
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El presente artículo describe un estudio inicial de la generación de geo-polímeros asociando comparativamente la reacción geopolimérica del caolín referida por varios autores y una arcilla cerámica local. Los geo-polímeros materiales aglomerantes que en un futuro podrían sustituir a materiales tradicionales de construcción como: cemento, bloque entre otros con un bajo impacto ambiental en su producción y uso, además de tener mayor resistencia mecánica y química.
Los análisis de fluorescencia y difractometría de RX del caolín y de la arcilla cerámica permitió conocer las similitudes tanto químicas como mineralogías de las materias primas, se partió del caolín con una relación siO2/ Al2O3 de 1.2 para verifi car las concentraciones químicas del activador generando una matriz experimental con los iones de na+1, K+1, al+3, si-2 en un medio alcalino. La reactividad entre los iones alcalinos y el ion silicato demostraron iniciar la reacción de geo-polimerización tanto en el caolín como en la arcilla cerámica considerando que la relación siO2/al2O3 de la arcilla es de 1.78. Las briquetas de prueba se desarrollaron con ambas materias primas que fueron tratadas con solución la activadora desarrollada en la primera parte del estudio. Los ensayos dieron como resultados briquetas resistentes al agua con 5 horas de curado y una resistencia de hasta 32 megas pascales en los ensayos de compresión.
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.
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.
Keywords
Geo polymerization, Alkali activation, Alternative cement, Geo-polimerización, Activación alcalina, Cemento alternativo