7th IMRMPT

Abstract

Abstract information

English title:	Evaluation of the mechanical behavior to bending and compression of recycled microconcrete from demolition and construction waste reinforced with vegetable fibers: a contribution to the circular economy
Spanish title:	Evaluaci�n del comportamiento mec�nico a la flexi�n y a la compresi�n de microconcreto reciclado a partir de residuos de demolici�n y construcci�n reforzado con fibras vegetales: un aporte a la econom�a circular
English abstract:	The circular economy, as a response to environmental sustainability, describes the need to take advantage of available resources in the most efficient and sustainable way. The reuse of demolition and construction waste and of by-products and agro-industrial waste contributes to a great extent to the use of available resources for use in other construction works. Fibre-reinforced microconcrete, a material with its own qualities for use in the construction of civil works, conventional aggregates (sand and crushed gravel) can be replaced by recycled concrete crushed to particles smaller than 2.5 millimeters, thus fibers of vegetable origin are added to improve its mechanical properties to bending, working as a contribution to the concept of circular economy. The main objective of this work is to evaluate the mechanical behavior in bending and compression of recycled microconcrete from demolition and construction waste reinforced with vegetable fibers. Thin plates 2 centimeters thick and laboratory-scale prisms with a section of 4 centimeters on each side and 16 centimeters long were developed, which were tested in bending and compression with a hydraulic press and a universal testing machine. The results were contrasted with mixtures of simple microconcrete and fiber-reinforced with glass fibers, in order to determine their usefulness in the construction industry. It was determined that the compressive strength of microconcrete with recycled concrete aggregate presents a decrease of up to 25% of the resistance of microconcrete with conventional aggregates, on the other hand, the addition of vegetable fibers increases up to 2.6 times the flexural resistance compared to a simple microconcrete, which implies that the developed microconcrete presents an adequate performance for its use in elements subjected to flexion such as plates for different uses in the construction industry.
Spanish abstract:	La econom�a circular, como respuesta a la sostenibilidad ambiental, describe la necesidad de aprovechar los recursos disponibles de la forma m�s eficiente y sostenible. La reutilizaci�n de residuos de demolici�n y construcci�n y, de subproductos y desechos agroindustriales aporta en gran medida al aprovechamiento de los recursos disponibles para su uso en otras obras de construcci�n. El microconcreto fibro-reforzado, un material con cualidades propias para su uso en la edificaci�n de obras civiles, se le pueden sustituir los agregados convencionales (arena y grava triturada) por concreto reciclado triturado a part�culas inferiores de 2,5 mil�metros, a lo que se le adicionan fibras de origen vegetal para el mejoramiento de sus propiedades mec�nicas a la flexi�n, funcionando como un aporte al concepto de econom�a circular. El presente trabajo tiene como objetivo principal evaluar el comportamiento mec�nico a la flexi�n y a la compresi�n de microconcreto reciclado a partir de residuos de demolici�n y construcci�n reforzado con fibras vegetales. Se desarrollaron placas delgadas de 2 cent�metros de espesor y prismas a escala de laboratorio con secci�n de 4 cent�metros de lado y 16 cent�metros de largo, los cuales fueron ensayados a la flexi�n y a la compresi�n con una prensa hidr�ulica y una m�quina universal de ensayos. Los resultados se contrastaron con mezclas de microconcreto simple y fibro-reforzado con fibras de vidrio, con el fin de determinar su utilidad en la industria de la construcci�n. Se determin� que la resistencia a la compresi�n del microconcreto con agregado de concreto reciclado presenta una disminuci�n de hasta el 25% de la resistencia que tiene un microconcreto con agregados convencionales, por otra parte, la adici�n de fibras vegetales aumenta hasta 2,6 veces la resistencia a la flexi�n en comparaci�n con un microconcreto simple, lo que implica que el microconcreto desarrollado presenta un funcionamiento adecuado para su uso en elementos sometidos a flexi�n como lo son las placas para diferentes usos en la industria de la construcci�n.
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Authors

Name	Institution	Email
JOSE DANIEL PALACIOS PABON	UNIVERSIDAD FRANCISCO DE PAULA SANTANDER	josedanielpppap@ufps.edu.co
JORGE SANCHEZ MOLINA	UNIVERSIDAD FRANCISCO DE PAULA SANTANDER	jorgesm@ufps.edu.co

Presentation

Room:	Principal Room
Date:	June 9, 2023
Hour:	09:00 - 09:20

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7^th IMRMPT
Seventh International Meeting for Researchers in Materials and Plasma Technology

Previous editions:

        1st IMRMPT 2011
        2nd IMRMPT 2013
        3rd IMRMPT 2015
        4th IMRMPT 2017
        5th IMRMPT 2019
        5+1 IMRMPT 2021

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