Aprovechamiento de los residuos provenientes de los Mixers como estrategia de economía circular en la industria cementera

Solid waste left over from operations in different constructions is considered today a generating source of high environmental impact, which is why the great concern is to give it adequate management, through the search for environmentally friendly alternatives for use that in turn generate greater productivity for companies, through innovation processes seeking best practices aligned with sustainable development and especially with the concept of circular economy. Currently, the “mixer” vehicles, after making the respective concrete deliveries, return to the plants with RCD waste (construction or demolition waste), in this specific case not used or discarded by the works. These RCD represent approximately between 0.4% and 0.5% of the total daily production of the concrete companies, which upon entering the plants are weighed on scales to determine the amount of RCD that is returned, subsequently this material is disposed of in a site designated as a storage area. storage, then it goes to the vehicle washing area in which process there are also remains of concrete mix material that is currently not usable within the same plant. This research evaluated the use of the material discarded at the work and that returns to the concrete plants, for this, a characterization was carried out chemistry and physics of the concrete sludge taken in the storage area, to subsequently analyze the components to be reused for the manufacture of new products or used as replacements for production processes. Replacements of limestone by mud were established at 30%, obtaining various experimental designs (CEM Cement 70% - Quarry Limestone (control) 30%, CEM 70% - Concrete Mud sample-1 30%, CEM High Early Resistance (ART) 70% - Concrete Mud sample-2 30%). The results of chemical analysis allowed us to detail the proportion of the compounds present. It will be observed that in sample 3097 silicon dioxide (SIO2) is the component with the highest proportion (70%). Mud can provide mechanical properties similar to cement, if used as an addition or a supplementary cementitious material (SCM). The resistance results show that the resistances obtained comply with those required by the NTC 121 standard, which indicates that this material can be reused in processes for additions and new products.

• Autores: Bitar Domínguez, Claudia Patricia
• Fecha de publicación: 2024
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: spa
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/13172
• Acceso en línea: https://hdl.handle.net/11323/13172; https://repositorio.cuc.edu.co
• Palabra clave: Residuos; Concreto; Adiciones; Economia circular; Desarrollo sostenible; Concrete; Additions; Circular economy; Sustainable development.
• Rights: openAccess
• License: Atribución-NoComercial-CompartirIgual 4.0 Internacional (CC BY-NC-SA 4.0)