INFLUENCE OF THE ALKALINE TREATMENT ON THE TENSILE PROPERTIES OF JUTE FIBERS AND ON THE FIBER-MATRIX BONDING

Author(s): Yasmim Gabriela dos Santos Mendonça (1), Bartosz Zukowski (1), Romildo Dias Toledo Filho (1)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 969-974
Total Pages: 6
Language : English

Abstract: This work presents the influence of alkaline treatment on the fiber tensile properties and cementitious matrix bond for jute fibers. The reference group of fibers was washed for 3 hours in water at 80 °C, then cooled at 40 °C for 5 hours. This process was applied to remove residues and impurities from the fiber’s surface. The group of alkaline treated fibers, after washing and cooling, was additionally submerged in a saturated solution of calcium hydroxide, Ca(OH)2 for 50 minutes. Both groups were dried for 24 hours at 40 °C. The tensile stress-strain behavior of the fibers was determined for the two groups at a microforce testing system using the gage length of 20 mm. The cross-sectional area of the fiber was measured using scanning electron microscope (SEM) micrographs and image analysis. The Young’s modulus, force at rupture, maximum stress and strain were calculated from the collected data to evaluate the influence of alkaline treatment on fiber’s tensile properties. Pullout tests for embedment length of 7 mm were realized to evaluate the effect of the alkaline treatment on the fiber-matrix bond. The alkaline treatment improved the mechanical behavior of the jute fibers and the fiber-matrix bond.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00