[1] Lü Qingfang, Yi Fan, Liu Ye,. Mechanical experimental study of a new CFRP grid-bamboo scrimber composite plate [J]. Journal of Southeast University (English Edition), 2024, 40 (2): 210-220. [doi:10.3969/j.issn.1003-7985.2024.02.012]

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Mechanical experimental study of a new CFRP grid-bamboo scrimber composite plate()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

40

Issue:

2024 2

Page:

210-220

Research Field:

Civil Engineering

Publishing date:

2024-06-13

Info

Title:

Mechanical experimental study of a new CFRP grid-bamboo scrimber composite plate

Author(s):

Lü Qingfang¹;  Yi Fan¹;  Liu Ye²

¹School of Civil Engineering, Southeast University, Nanjing 211189, China
²College of Architecture and Environment, Sichuan University, Chengdu 610065, China

Keywords:

carbon fiber-reinforced polymer;  bamboo scrimber;  uniaxial tension test;  pull-out test;  mechanical properties

PACS:

TU366.1

DOI:

10.3969/j.issn.1003-7985.2024.02.012

Abstract:

A novel composite plate made of carbon fiber-reinforced polymer(CFRP)grids and bamboo scrimber, termed CBCP, was developed to enhance the mechanical properties of bamboo scrimber and reduce its anisotropic defects. To investigate the mechanical behavior of CBCP and assess the influence of its composite fabrication method, uniaxial tensile tests were performed on eight sets of CBCP tensile specimens, and pull-out tests were conducted on eighteen groups of CBCP pull-out specimens. Three similar constitutive models were selected to depict the bond stress-slip curves of the pull-out specimens. The critical anchorage lengths between CFRP grids and bamboo scrimber were determined. The effects of the number of CFRP layers, characteristics of transverse CFRP bundles, and anchorage length on the bonding performance between CFRP grids and bamboo scrimber were analyzed. The results reveal that integrating a CFRP grid can increase the tensile strength of bamboo scrimber, both parallel and perpendicular to the grain, by 35.77% and 135.20%, respectively. This enhancement effectively reduces the anisotropic defects of bamboo scrimber. The increase of the number of grid layers and the grid spacing can enhance the tensile performance of CBCP. With the increase of the anchorage length, the average interface bonding strength decreases exponentially while the peak load slip decreases linearly.

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Memo

Memo:

Biography: Lü Qingfang(1972—), female, doctor, professor, 101011003 @seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 52378222), Sichuan Science and Technology Program(No. 2023YFS0393).
Citation: Lü Qingfang, Yi Fan, Liu Ye.Mechanical experimental study of a new CFRP grid-bamboo scrimber composite plate[J].Journal of Southeast University(English Edition), 2024, 40(2):210-220.DOI:10.3969/j.issn.1003-7985.2024.02.012.

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