Residual reliability of a composite material subjected to buckling and post-buckling tests: the case of reinforced concrete

被引:0
|
作者
Djami, Aslain Brisco Ngnassi [1 ,2 ]
Nguelcheu, Ulrich Ngnassi [3 ]
Offole, Florence [4 ]
机构
[1] Univ Ngaoundere, Chem Engn & Mineral Ind Sch, Dept Fundamental Sci & Tech Engineer, Ngaoundere, Cameroon
[2] Univ Ngaoundere, Natl Sch Agroind Sci, Mech Mat & Photon Lab, Ngaoundere, Cameroon
[3] Univ Ngaoundere, Fac Sci, Dept Phys, Ngaoundere, Cameroon
[4] Univ Douala, Natl Higher Polytech Sch Douala, Lab Energy Mat Modeling & Methods, Douala, Cameroon
来源
FRONTIERS IN MECHANICAL ENGINEERING-SWITZERLAND | 2024年 / 10卷
关键词
reinforced concrete; residual reliability; buckling; post-buckling; mechanical properties; failure; advanced composites; compressive strength; BEHAVIOR; STEEL; STRENGTH; COLUMNS; BEAMS; BARS;
D O I
10.3389/fmech.2024.1526724
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This article examines the residual reliability of composite materials, focusing on reinforced concrete subjected to buckling and post-buckling tests, a crucial topic in civil engineering. The main aim of the study is to assess how these loads affect mechanical properties, including compressive strength and elongation at break, while identifying associated failure mechanisms. A rigorous methodology was adopted, involving experimental tests on reinforced concrete samples, followed by microscopic analysis and comparison with literature data. The results reveal a significant decrease in compressive strength and modulus of elasticity with increasing loads and loading cycles. In addition, the study highlights a reduction in elongation at break, indicating a loss of ductility and stiffness of the material. Failure mechanisms observed include cracking and delamination, suggesting that the residual reliability of reinforced concrete is inferior to that of advanced composites. These findings underline the importance of appropriate design to ensure the durability of reinforced concrete structures, taking into account the impact of extreme loads and environmental conditions. This research contributes to a better understanding of the behavior of composite materials under critical conditions, providing recommendations for improving design and construction practices in civil engineering.
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页数:19
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