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Comparison of Bending Creep Behavior of Bamboo-based Composites Manufactured by Two Types of Stacking Sequences

Articles

Journal/Conference:

BIORESOURCES

Language:

English

Author:

Xian Yu; Li Haidong

Experts:

Ma Xinxin; Wang Ge

Year:

2014

Volume:

9

Issue:

3

Pages:

5461-5472

Keywords:

Bamboo-based composite; Creep; Mechano-sorptive creep; Burgers model; Power law

The study of viscoelastic and mechano-sorptive creep on bamboo laminated veneer lumber (BLVL) and bamboo/poplar plywood (BPP) is described in this paper. Bending creep tests parallel to the grain were carried out on two bamboo-based composites for a length of 90 days. The specimens measured 500 mm x 20 mm x 12 mm. Based on the experimental data, the creep curves of two boards were evaluated. The results are summarized as follows: (1) the anti-creep property of BLVL was better than that of BPP; (2) two creep curves were successfully approximated using the Burgers model and the power law model. The required experimental term for the creep test to estimate an accurate long-term curve is 2 or 3 years when the power law is used for the estimation; and (3) compared with the creep curve in a constant environment, the creep deformation changed more dramatically under varying environment.