Cargando…

Pullout Behavior of Bundled Aramid Fiber in Fiber-Reinforced Cementitious Composite

The tensile performance of fiber-reinforced cementitious composite (FRCC) after first matrix cracking is characterized by a tensile stress–crack width relationship called the bridging law. The bridging law can be obtained by an integral calculus of forces carried by individual bridging fibers consid...

Descripción completa

Detalles Bibliográficos
Autores principales: Kanakubo, Toshiyuki, Echizen, Saki, Wang, Jin, Mu, Yu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7179034/
https://www.ncbi.nlm.nih.gov/pubmed/32283612
http://dx.doi.org/10.3390/ma13071746
_version_ 1783525589759557632
author Kanakubo, Toshiyuki
Echizen, Saki
Wang, Jin
Mu, Yu
author_facet Kanakubo, Toshiyuki
Echizen, Saki
Wang, Jin
Mu, Yu
author_sort Kanakubo, Toshiyuki
collection PubMed
description The tensile performance of fiber-reinforced cementitious composite (FRCC) after first matrix cracking is characterized by a tensile stress–crack width relationship called the bridging law. The bridging law can be obtained by an integral calculus of forces carried by individual bridging fibers considering the effect of the fiber inclination angle. The main objective of this study is to investigate experimentally and evaluate the pullout behavior of a single aramid fiber, which is made with a bundling of original yarns of aramid fiber. The bundled aramid fiber has a nonsmooth surface, and it is expected to have good bond performance with the matrix. The test variables in the pullout test are the thickness of the matrix and the inclined angle of the fiber. From the test results, the pullout load–slip curves showed that the load increases lineally until maximum load, after which it decreases gradually. The maximum pullout load and slip at the maximum load increase as the embedded length of the fiber becomes larger. The pullout load–crack width relationship is modeled by a bilinear model, and the bridging law is calculated. The calculated result shows good agreement with the experimental curves obtained by the uniaxial tension test of aramid–FRCC.
format Online
Article
Text
id pubmed-7179034
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-71790342020-04-28 Pullout Behavior of Bundled Aramid Fiber in Fiber-Reinforced Cementitious Composite Kanakubo, Toshiyuki Echizen, Saki Wang, Jin Mu, Yu Materials (Basel) Article The tensile performance of fiber-reinforced cementitious composite (FRCC) after first matrix cracking is characterized by a tensile stress–crack width relationship called the bridging law. The bridging law can be obtained by an integral calculus of forces carried by individual bridging fibers considering the effect of the fiber inclination angle. The main objective of this study is to investigate experimentally and evaluate the pullout behavior of a single aramid fiber, which is made with a bundling of original yarns of aramid fiber. The bundled aramid fiber has a nonsmooth surface, and it is expected to have good bond performance with the matrix. The test variables in the pullout test are the thickness of the matrix and the inclined angle of the fiber. From the test results, the pullout load–slip curves showed that the load increases lineally until maximum load, after which it decreases gradually. The maximum pullout load and slip at the maximum load increase as the embedded length of the fiber becomes larger. The pullout load–crack width relationship is modeled by a bilinear model, and the bridging law is calculated. The calculated result shows good agreement with the experimental curves obtained by the uniaxial tension test of aramid–FRCC. MDPI 2020-04-09 /pmc/articles/PMC7179034/ /pubmed/32283612 http://dx.doi.org/10.3390/ma13071746 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kanakubo, Toshiyuki
Echizen, Saki
Wang, Jin
Mu, Yu
Pullout Behavior of Bundled Aramid Fiber in Fiber-Reinforced Cementitious Composite
title Pullout Behavior of Bundled Aramid Fiber in Fiber-Reinforced Cementitious Composite
title_full Pullout Behavior of Bundled Aramid Fiber in Fiber-Reinforced Cementitious Composite
title_fullStr Pullout Behavior of Bundled Aramid Fiber in Fiber-Reinforced Cementitious Composite
title_full_unstemmed Pullout Behavior of Bundled Aramid Fiber in Fiber-Reinforced Cementitious Composite
title_short Pullout Behavior of Bundled Aramid Fiber in Fiber-Reinforced Cementitious Composite
title_sort pullout behavior of bundled aramid fiber in fiber-reinforced cementitious composite
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7179034/
https://www.ncbi.nlm.nih.gov/pubmed/32283612
http://dx.doi.org/10.3390/ma13071746
work_keys_str_mv AT kanakubotoshiyuki pulloutbehaviorofbundledaramidfiberinfiberreinforcedcementitiouscomposite
AT echizensaki pulloutbehaviorofbundledaramidfiberinfiberreinforcedcementitiouscomposite
AT wangjin pulloutbehaviorofbundledaramidfiberinfiberreinforcedcementitiouscomposite
AT muyu pulloutbehaviorofbundledaramidfiberinfiberreinforcedcementitiouscomposite