| Title | Development of construction mortars with geopolymers obtained from soils degraded by mining in Bajo Cauca Antioquia |
|---|---|
| ID_Doc | 9543 |
| Authors | Lenis-Rodas, J; Aleán-Vásquez, A; Villa-Cardona, F; Córdoba-Castro, J; Gómez-Botero, M |
| Title | Development of construction mortars with geopolymers obtained from soils degraded by mining in Bajo Cauca Antioquia |
| Year | 2023 |
| Published | Uis Ingenierias, 22.0, 3 |
| Abstract | In the present work, mortars with geopolymer were obtained from degraded soils from mining activities as a circular economy process. For this purpose, a granulometric classification of the degraded soil was initially carried out to obtain particles with a size of less than 750 & mu;m, which were used in the mixture as fine aggregates. For the cementitious phase, mixtures of degraded soil with size less than 45 & mu;m (obtained through a grinding process of the fine aggregate) and fly ash (with size < 45 & mu;m), alkaline activated, were used. The particle size of the soils was determined by laser diffraction. In addition, a chemical evaluation of the geopolymer precursors was carried out by X-ray fluorescence and scanning electron microscopy was used for the analysis of both the soils and the manufactured geopolymer mortars; density and compressive strength tests were carried out. The results obtained indicate that ground soil particles with a size smaller than 45 & mu;m were obtained in percentages higher than 91.7 %, which presented a high content of aluminosilicates: SiO2 (81.7 % p/p) and Al2O3 (12.51 % p/p). In addition, a morphology of irregular grains and sticks was observed in the mortars with developed geopolymers. |
| https://revistas.uis.edu.co/index.php/revistauisingenierias/article/download/13496/13002 |
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