Hormigones alternativos de alto desempeño con el uso de desechos de porcelana como agregado grueso

Abstract

The construction sector generates 25% of all waste and emits 40-50% of greenhouse gases worldwide. This project determined if it is possible to recycle 11 tons per day of porcelain discarded by Graiman, replacing the coarse mineral aggregate by the partial or total incorporation of recycled porcelain crushed in the concrete mixtures. This substitution feasibility was first estimated through the characterization of the mineral and recycled aggregates, followed by the design of a high-performance concrete mixture, based on this, making combinations between mineral and recycled aggregates, finally establishing an optimum percentage of combination verify the behavior of the recycled aggregate in the concrete mix, by means of compression tests and indirect traction. The results show through the tests a combination of optimal aggregates 70% gravel - 30% porcelain; but it also shows that with 100% porcelain the concrete does not stop being of high performance, so that 100% of replacement is also approved for the elaboration of high performance concrete, showing a resistance greater than 21MPa for building and 3.5 MPa in road infrastructure; and contributes up to 70% in the qualification needed for an environmental certification and reduces up to 613.3 Gigajoules (GJ) in energy consumption and 108,704 kg CO2e emissions, in its mixture with optimal combination of aggregates with respect to the consumption made by Hormicreto in the 2014.