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Repositorio Institucional USAT
Bachelor thesis . 2024
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Evaluación técnico – económica de la incorporación de microesferas de vidrio en las propiedades mecánicas del concreto autocompactante

Authors: Piscoya Velasquez, Miguel Alonso; Piscoya Velasquez, Miguel Alonso;

Evaluación técnico – económica de la incorporación de microesferas de vidrio en las propiedades mecánicas del concreto autocompactante

Abstract

El presente articulo está enfocado en analizar las propiedades del concreto con dosificación de microesferas de vidrio en 2%, 5% y 7% como reemplazo parcial del cemento. Según los lineamientos de la norma ACI 237 – R, se conservó la relación a/c en todas las combinaciones. A partir de ello se realizó ensayos de asentamiento, caja de paso L, embudo V, anillo J, temperatura, peso unitario, compresión, tracción, módulo de elasticidad y coeficiente de Poisson. Observándose que, con las diversas combinaciones, se mejora notablemente las propiedades del concreto en estado fresco. Reduce la viscosidad, aumenta la velocidad de flujo, el asentamiento, uniformidad y capacidad de paso, siendo la combinación más incidente el del 7% de HGM. Sin embargo, las combinaciones de HGM en el concreto en estado endurecido se nota una reducción de resistencia de tracción y compresión respecto a la muestra patrón, pero cumpliendo con la resistencia solicitada de 350 kg/cm2. A pesar de eso, la dosificación del 5% tuvo una disminución casi despreciable. Siendo este ultimo la dosificación óptima para elaborar concreto autocompactante.

This paper is focused on analyzing the properties of concrete with glass microspheres dosed at 2%, 5% and 7% as a partial replacement of cement. According to the guidelines of the ACI 237 - R standard, the w/c ratio was preserved in all combinations. Based on this, slump, L-box, V funnel, J-ring, temperature, unit weight, compression, tensile, modulus of elasticity and Poisson's coefficient tests were carried out. It was observed that, with the different combinations, the properties of the concrete in its fresh state are significantly improved. It reduces viscosity, increases flow velocity, slump, uniformity and flow capacity, with the most common combination being 7% HGM. However, the combinations of HGM in the hardened concrete show a reduction in tensile and compressive strength with respect to the standard sample, but comply with the requested strength of 350 kg/cm2. In spite of this, the 5% dosage had an almost negligible decrease. The latter being the optimum dosage for making self compacting concrete.

Country
Peru
Keywords

https://purl.org/pe-repo/ocde/ford#2.01.00, Propiedades mecánicas, http://purl.org/pe-repo/ocde/ford#2.01.00, Glass microspheres, Self-compacting concrete, Mechanical properties, Microesferas de vidrio, Concreto autocompactante

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Green