TY - JOUR
T1 - Interface characteristics of jute fiber systems in a cementitious matrix
AU - Fidelis, Maria Ernestina Alves
AU - Toledo Filho, Romildo Dias
AU - de Andrade Silva, Flávio
AU - Mobasher, Barzin
AU - Müller, Steffen
AU - Mechtcherine, Viktor
N1 - Funding Information:
The authors gratefully acknowledge the CNPq , FAPERJ and CAPES (Brazilian National Science Foundations) for partial financial support for this work; the Technische Universität Dresden, Germany, for providing the polymer and enabling the realization of the pullout tests, through PROBRAL cooperation and to the Arizona State University (CNPq Science Without Border Program).
Publisher Copyright:
© 2018 Elsevier Ltd
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/2
Y1 - 2019/2
N2 - The pullout behavior of single filament jute fibers and yarns from a low calcium hydroxide cement matrix were studied. Pullout tests were performed in the micro and meso scales. In the micro scale, the tests were conducted inside an environmental SEM. The fibers were treated with styrene butadiene polymer to improve the fiber-matrix bond and a double-sided pullout configuration was used for the meso scale tests. An analytical model was used to calculate the parameters related to adhesional, frictional, and dynamic bond slip mechanisms between jute fiber and matrix. Results showed that the polymer coating increased the bond up to 130%. The fiber matrix bond at the meso scale also yielded higher values for the polymer-coated fibers. The analytical model is observed to fit the experimental results with the parameters of the maximum shear and frictional stresses that correlate well with the nominal interface strength.
AB - The pullout behavior of single filament jute fibers and yarns from a low calcium hydroxide cement matrix were studied. Pullout tests were performed in the micro and meso scales. In the micro scale, the tests were conducted inside an environmental SEM. The fibers were treated with styrene butadiene polymer to improve the fiber-matrix bond and a double-sided pullout configuration was used for the meso scale tests. An analytical model was used to calculate the parameters related to adhesional, frictional, and dynamic bond slip mechanisms between jute fiber and matrix. Results showed that the polymer coating increased the bond up to 130%. The fiber matrix bond at the meso scale also yielded higher values for the polymer-coated fibers. The analytical model is observed to fit the experimental results with the parameters of the maximum shear and frictional stresses that correlate well with the nominal interface strength.
KW - Analytical model
KW - Cement-based composite
KW - Jute fiber
KW - Polymer coating
KW - Pullout test
UR - http://www.scopus.com/inward/record.url?scp=85058151508&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85058151508&partnerID=8YFLogxK
U2 - 10.1016/j.cemconres.2018.12.002
DO - 10.1016/j.cemconres.2018.12.002
M3 - Article
AN - SCOPUS:85058151508
SN - 0008-8846
VL - 116
SP - 252
EP - 265
JO - Cement and Concrete Research
JF - Cement and Concrete Research
ER -