7th IMRMPT

Abstract

Abstract information

English title:	Determination of the structural behavior of fiber-reinforced microconcrete plates for load-bearing wall systems
Spanish title:	Determinaci�n del comportamiento estructural de placas de microconcreto fibro-reforzado para sistemas de muros de carga
English abstract:	Concrete is a compound of cement, water, aggregates and additives that has excellent physical and mechanical properties. According to its composition, concrete can be classified as microconcrete when it is only made up of aggregates with particles smaller than 2.5 millimeters. On the other hand, natural fibers are reinforcing materials that have been used since ancient times, such as the use of horsehair and straw to reinforce mud bricks. When microconcrete is combined with fiber-reinforcement, a material with its own qualities is obtained for use in elements subjected to flexion and compression. The aim of this work is to determine the structural behavior of fiber-reinforced microconcrete plates with natural fibers of vegetable origin for load-bearing wall systems. Fibro-reinforced microconcrete mixes were developed, where different types of natural fibers were used, which underwent chemical treatment with sodium hydroxide and calcium hydroxide to remove lignin and thus reduce the alkaline reaction between the cement and the fibers, increasing the durability of the compound. Four microconcrete mixtures were made with fibers from fique, guadua, the stem of the banana palm and sugarcane bagasse. The results were compared with simple microconcrete and fibro-reinforced with fiberglass, the latter being the one that has presented the best properties in comparison with other types of artificial fibers. In conclusion, it was obtained that the mixtures reinforced with fique fibers present similar results to the mixture with fiberglass, while the samples with fibers of guadua, stem of the banana palm and sugarcane bagasse do not present a significant contribution. to structural behavior. Therefore, for the construction of load-bearing walls, it was determined that the fiber-reinforced micro-concrete plates with fique fibers have an adequate structural behavior to flexo-compression, shear and, in addition, they present optimal rigidity for their use in the construction.
Spanish abstract:	El concreto es un compuesto de cemento, agua, agregados y aditivos que posee excelentes propiedades f�sicas y mec�nicas. Seg�n su composici�n el concreto puede clasificarse como microconcreto cuando este solo se compone de agregados con part�culas inferiores a 2,5 mil�metros. Por otra parte, las fibras naturales son materiales de refuerzo que se han utilizado desde la antig�edad, como es el caso del uso de la crin de caballo y la paja para reforzar ladrillos de barro. Al combinarse el microconcreto con fibro-refuerzo se obtiene un material con cualidades propias para su uso en elementos sometidos a flexi�n y compresi�n. El objetivo de este trabajo es determinar el comportamiento estructural de placas de microconcreto fibro-reforzado con fibras naturales de origen vegetal para sistemas de muros de carga. Se desarrollaron mezclas de microconcreto fibro-reforzado, donde se utilizaron diferentes tipos de fibras naturales, a las cuales se les realiz� tratamiento qu�mico con hidr�xido de sodio y con hidr�xido de calcio para remover la lignina y as� disminuir la reacci�n alcalina entre el cemento y las fibras, aumentando la durabilidad del compuesto. Se realizaron cuatro mezclas de microconcreto con fibras procedentes del fique, la guadua, el v�stago de la palma de pl�tano y el bagazo de ca�a de az�car. Los resultados se compararon con microconcreto simple y fibro-reforzado con fibra de vidrio, siendo este �ltimo el que mejores propiedades ha presentado en comparaci�n con otros tipos de fibras artificiales. En conclusi�n, se obtuvo que las mezclas reforzadas con fibras de fique presentan resultados similares a la mezcla con fibra de vidrio, mientras que las muestras con fibras de guadua, v�stago de la palma de pl�tano y bagazo de ca�a de az�car no presentan un aporte significativo al comportamiento estructural. Por lo tanto, para la edificaci�n de muros de carga se determin� que las placas de microconcreto fibro-reforzado con fibras de fique tienen un comportamiento estructural adecuado a la flexo-compresi�n, al cortante y, adem�s, presentan una rigidez �ptima para su utilizaci�n en 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 7, 2023
Hour:	17:20 - 17:40

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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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