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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Static flexural behavior of bamboo as a functionally graded material and the effect of heat on dynamic flexural modulus

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Author(s):
Azadeh, A. [1] ; Ghavami, K. [2] ; Savastano Junior, H. [1] ; Toledo Filho, R. D. [3] ; Barbosa, N. P. [4]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Sao Paulo, SP - Brazil
[2] Pontificia Univ Catolica Rio de Janeiro PUG Rio, Rio De Janeiro - Brazil
[3] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, RJ - Brazil
[4] Univ Fed Paraiba UFPB, Joao Pessoa, Paraiba - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF BUILDING ENGINEERING; v. 34, FEB 2021.
Web of Science Citations: 0
Abstract

The objective of the present investigation is to study the static and dynamic flexural behavior of bamboo as a functionally graded material to determine the Static Flexural Modulus (SFM) for untreated bamboo samples and to evaluate the effect of heat on the variation of the Dynamic Flexural Modulus (DFM). For the static flexural test, initially, the image processing has been carried out to establish the fiber distribution equation along the radial direction followed by the use to measure the tensile and compressive modulus of elasticity (MOE). The result of static flexural tests shows four different values of MOE at tensile and compressive state for inner and outer bamboo walls with low and high fiber density respectively. The average of the MOE at the tensile is circa 12% higher than in its compressive state. A non-destructive method, based on the impulse excitation technique is proposed for the heat-treated specimens to establish the DFM. The effects of different temperatures and time exposures as well as moisture content, on the DFM and weight of the specimens, have been considered in this study. Comparing the static and dynamic test results for untreated bamboo does not show a meaningful difference between SFM and DFM. The dynamic flexural test shows the effect of heat treatment on DFM to be less than 6% when heated for 3 h at 200 degrees C or when heated at 175 degrees C for 24 h. (AU)

FAPESP's process: 18/25011-9 - The influence of heat and chemical treatment on bamboo degradation and aging
Grantee:Arash Azadeh
Support Opportunities: Scholarships in Brazil - Post-Doctoral