Diseño de un modelo constitutivo explícito de formación de fisuras para compuestos cementicios diseñados utilizando fibra de polivinil alcohol (PVA) o de polietileno (PE)

Autores/as

DOI:

https://doi.org/10.3989/mc.2024.367923

Palabras clave:

Compuestos cementicios de ingeniería, Modelo de puenteo de fisuras, Arrancamiento bidireccional, Rotura por arrancamiento de fibra

Resumen


El objetivo de este trabajo es establecer un modelo explícito de formación de fisuras que pueda vincular el comportamiento de los materiales compuestos cementicios de ingeniería (ECC) desde la escala de una sola fibra hasta la de una sola fisura. En este estudio, la tensión de puenteo de la fibra se dividió en tres partes: tensión de puenteo de la fibra sin rotura, tensión de fractura por desprendimiento de la fibra y tensión de fractura por extracción de la fibra. Se descubrió que la situación de extracción bidireccional de la fibra de polivinil alcohol (PVA) tiene una elevada influencia significativa en la anchura de apertura de la fisura, mientas que el efecto Cook-Gordon contribuye de forma significativa a la anchura de apertura de fisura del compuesto fabricado con polietileno (PE). Este modelo de construcción inteligible presenta una mejor predicción para ECC a través de la comparación de datos experimentales o de la anchura media real de la fisura en modelos anteriores, confirmando así su validez.

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Citas

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Publicado

2024-06-11

Cómo citar

Wang, Z. ., Li, B., Li, L., & Zhang, Z. . (2024). Diseño de un modelo constitutivo explícito de formación de fisuras para compuestos cementicios diseñados utilizando fibra de polivinil alcohol (PVA) o de polietileno (PE). Materiales De Construcción, 74(354), e342. https://doi.org/10.3989/mc.2024.367923

Número

Sección

Artículos

Datos de los fondos

National Natural Science Foundation of China
Números de la subvención 51678379

Key Research and Development Program of Sichuan Province
Números de la subvención 2023YFQ0047