Mechanical Behavior of the Alkali-Treated Ichu Fiber-Cementitious Matrix Interface Through Experimental Tests, Numerical, and Analytical Models

Adan Renzo Aguilar; Samuel Charca; Carmen Elena Flores; Elvis Yuri Mamani

doi:10.1080/15440478.2022.2080788

Mechanical Behavior of the Alkali-Treated Ichu Fiber-Cementitious Matrix Interface Through Experimental Tests, Numerical, and Analytical Models

Adan Renzo Aguilar, Samuel Charca, Carmen Elena Flores, Elvis Yuri Mamani

Research output: Contribution to journal › Original Article › peer-review

Abstract

The interaction properties between natural fiber and matrix play an important role in the mechanical performance of composite materials. The adhesion properties and the mechanical interaction between an Ichu fiber (Stipa obtusa) treated with sodium hydroxide and a cementitious matrix were studied by conducting experimental, numerical, and analytical pull-out tests. Through the experimental tests, the force–displacement curve for a fiber length embedded 5 mm deep in the cementitious matrix, maximum force, cohesive parameters, and the type of interface failure were determined. The results were used to calibrate the numerical and analytical models for different lengths of fiber (3, 5, 7, 9, and 11 mm) embedded in the cementitious matrix. The numerical model was implemented in the finite element software Abaqus CAE, and the analytical formulation considered the fiber embedded in a half-space continuous medium. From the experimental test, the force–displacement curve, interfacial shear strength of 0.124 MPa, and the softening type slip were obtained, despite obtaining the hardening-type slip in certain tests. The numerical and analytical results of the load–displacement curve closely approximate the experimental results. This study provides a numerical and analytical model to simulate the alkali-treated Ichu fiber–cementitous matrix interface.

Original language	American English
Pages (from-to)	12971-12981
Number of pages	11
Journal	Journal of Natural Fibers
Volume	19
Issue number	16
DOIs	https://doi.org/10.1080/15440478.2022.2080788
State	Indexed - 2022
Externally published	Yes

Bibliographical note

Funding Information:
This paper was written in the context of the Project, “Production of fiber cement panels using materials obtained from Peruvian endemic plants” funded by PROCIENCIA-CONCYTEC, under the contract number N° 103-2018-FONDECYT-BM-IADT-MU. The authors of this paper appreciate the financial support from the Peruvian Government. We are also grateful to Carlos Tenazoa for his invaluable contribution in the experimental tests.

Funding Information:
This work was supported by the Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica [N° 103-2018-FONDECYT-BM-IADT-MU]. This paper was written in the context of the Project, “Production of fiber cement panels using materials obtained from Peruvian endemic plants” funded by PROCIENCIA-CONCYTEC, under the contract number N° 103-2018-FONDECYT-BM-IADT-MU. The authors of this paper appreciate the financial support from the Peruvian Government. We are also grateful to Carlos Tenazoa for his invaluable contribution in the experimental tests.

Publisher Copyright:
© 2022 Taylor & Francis.

Keywords

Ichu
Natural fiber
cementitious matrix
cohesive properties
mechanical properties
pull-out

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10.1080/15440478.2022.2080788

Cite this

@article{774201a20286460ba2bbd435ca62b059,

title = "Mechanical Behavior of the Alkali-Treated Ichu Fiber-Cementitious Matrix Interface Through Experimental Tests, Numerical, and Analytical Models",

abstract = "The interaction properties between natural fiber and matrix play an important role in the mechanical performance of composite materials. The adhesion properties and the mechanical interaction between an Ichu fiber (Stipa obtusa) treated with sodium hydroxide and a cementitious matrix were studied by conducting experimental, numerical, and analytical pull-out tests. Through the experimental tests, the force–displacement curve for a fiber length embedded 5 mm deep in the cementitious matrix, maximum force, cohesive parameters, and the type of interface failure were determined. The results were used to calibrate the numerical and analytical models for different lengths of fiber (3, 5, 7, 9, and 11 mm) embedded in the cementitious matrix. The numerical model was implemented in the finite element software Abaqus CAE, and the analytical formulation considered the fiber embedded in a half-space continuous medium. From the experimental test, the force–displacement curve, interfacial shear strength of 0.124 MPa, and the softening type slip were obtained, despite obtaining the hardening-type slip in certain tests. The numerical and analytical results of the load–displacement curve closely approximate the experimental results. This study provides a numerical and analytical model to simulate the alkali-treated Ichu fiber–cementitous matrix interface.",

keywords = "Ichu, Natural fiber, cementitious matrix, cohesive properties, mechanical properties, pull-out",

author = "Aguilar, {Adan Renzo} and Samuel Charca and Flores, {Carmen Elena} and Mamani, {Elvis Yuri}",

note = "Funding Information: This paper was written in the context of the Project, “Production of fiber cement panels using materials obtained from Peruvian endemic plants” funded by PROCIENCIA-CONCYTEC, under the contract number N° 103-2018-FONDECYT-BM-IADT-MU. The authors of this paper appreciate the financial support from the Peruvian Government. We are also grateful to Carlos Tenazoa for his invaluable contribution in the experimental tests. Funding Information: This work was supported by the Consejo Nacional de Ciencia, Tecnolog{\'i}a e Innovaci{\'o}n Tecnol{\'o}gica [N° 103-2018-FONDECYT-BM-IADT-MU]. This paper was written in the context of the Project, “Production of fiber cement panels using materials obtained from Peruvian endemic plants” funded by PROCIENCIA-CONCYTEC, under the contract number N° 103-2018-FONDECYT-BM-IADT-MU. The authors of this paper appreciate the financial support from the Peruvian Government. We are also grateful to Carlos Tenazoa for his invaluable contribution in the experimental tests. Publisher Copyright: {\textcopyright} 2022 Taylor & Francis.",

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AU - Mamani, Elvis Yuri

N1 - Funding Information: This paper was written in the context of the Project, “Production of fiber cement panels using materials obtained from Peruvian endemic plants” funded by PROCIENCIA-CONCYTEC, under the contract number N° 103-2018-FONDECYT-BM-IADT-MU. The authors of this paper appreciate the financial support from the Peruvian Government. We are also grateful to Carlos Tenazoa for his invaluable contribution in the experimental tests. Funding Information: This work was supported by the Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica [N° 103-2018-FONDECYT-BM-IADT-MU]. This paper was written in the context of the Project, “Production of fiber cement panels using materials obtained from Peruvian endemic plants” funded by PROCIENCIA-CONCYTEC, under the contract number N° 103-2018-FONDECYT-BM-IADT-MU. The authors of this paper appreciate the financial support from the Peruvian Government. We are also grateful to Carlos Tenazoa for his invaluable contribution in the experimental tests. Publisher Copyright: © 2022 Taylor & Francis.

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N2 - The interaction properties between natural fiber and matrix play an important role in the mechanical performance of composite materials. The adhesion properties and the mechanical interaction between an Ichu fiber (Stipa obtusa) treated with sodium hydroxide and a cementitious matrix were studied by conducting experimental, numerical, and analytical pull-out tests. Through the experimental tests, the force–displacement curve for a fiber length embedded 5 mm deep in the cementitious matrix, maximum force, cohesive parameters, and the type of interface failure were determined. The results were used to calibrate the numerical and analytical models for different lengths of fiber (3, 5, 7, 9, and 11 mm) embedded in the cementitious matrix. The numerical model was implemented in the finite element software Abaqus CAE, and the analytical formulation considered the fiber embedded in a half-space continuous medium. From the experimental test, the force–displacement curve, interfacial shear strength of 0.124 MPa, and the softening type slip were obtained, despite obtaining the hardening-type slip in certain tests. The numerical and analytical results of the load–displacement curve closely approximate the experimental results. This study provides a numerical and analytical model to simulate the alkali-treated Ichu fiber–cementitous matrix interface.

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ER -

Mechanical Behavior of the Alkali-Treated Ichu Fiber-Cementitious Matrix Interface Through Experimental Tests, Numerical, and Analytical Models

Abstract

Bibliographical note

Keywords

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