Fabricación de mampuestos de tierra con reciclado de residuos de la minería de arena en Río Negro, Argentina
Date
2023
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Abstract
En este trabajo se evalúa la factibilidad de emplear la arena y arcilla residuales generados por la minería de arena para fabricar bloques de tierra comprimida (BTC) y adobes. Para ello, se caracterizaron los subproductos generados por una mina en la provincia de Río Negro (Argentina) y se confeccionaron diferentes series de probetas, determinando su retracción por secado, densidad seca, resistencia a compresión y resistencia a erosión húmeda. Los resultados indican que, con una dosificación en peso de 74.25% arcilla, 24.75% arena y un 1% de paja, pueden producirse adobes portantes con una resistencia a compresión de 18.63 kgf/cm2 , mientras que, empleando una dosificación de 71.3% de arcilla, 23.7%
arena y 5% de cemento Portland, pueden producirse BTC con una resistencia a compresión
superior a 30 kgf/cm2 y una elevada resistencia a la erosión húmeda, aptos para emplearse
en la construcción de muros de carga y muros exteriores sin revoque.
This work evaluates the feasibility of using residual sand and clay generated by sand mining to manufacture compressed earth blocks (CEB) and adobes. To do this, the byproducts generated by a mine in the province of Río Negro (Argentina) were characterized and different series of samples were made, determining their shrinkage due to drying, dry density, compressive strength and wet erosion resistance. The results indicate that, with a dosage by weight of 74.25% clay, 24.75% sand and 1% wheat straw, load-bearing adobes can be produced with a compressive strength of 18.63 kgf/cm2 , while, using a dosage of 71.3% clay, 23.7% sand, 5% Portland cement, CEB can be produced with a compressive strength greater than 30 kgf/cm2 and a high resistance to wet erosion, suitable for use in the construction of load-bearing walls and exterior walls without plaster.
This work evaluates the feasibility of using residual sand and clay generated by sand mining to manufacture compressed earth blocks (CEB) and adobes. To do this, the byproducts generated by a mine in the province of Río Negro (Argentina) were characterized and different series of samples were made, determining their shrinkage due to drying, dry density, compressive strength and wet erosion resistance. The results indicate that, with a dosage by weight of 74.25% clay, 24.75% sand and 1% wheat straw, load-bearing adobes can be produced with a compressive strength of 18.63 kgf/cm2 , while, using a dosage of 71.3% clay, 23.7% sand, 5% Portland cement, CEB can be produced with a compressive strength greater than 30 kgf/cm2 and a high resistance to wet erosion, suitable for use in the construction of load-bearing walls and exterior walls without plaster.
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Keywords
BTC, Adobe, Residuos, Reciclaje, Resistencia, CEB, Adobe, Waste, Recycling, Strength
Citation
Cabrera, S., Losa, N. & Darrás, G. (2023). Fabricación de mampuestos de tierra con reciclado de residuos de la minería de arena en Río Negro, Argentina. Revista Tecnología y Ciencia de la UTN, 21(48), 22-40.
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