The novel structure of a basalt fiber reinforced polymer (BFRP)-confined ceramsite concrete column (BFCCC) reinforced with bamboo strips (BSs) was investigated. The characteristics of light weight, BSs and FRP reinforcement were reflected in the structure. Thirty-six BFCCCs and 18 unconfined ceramsite concrete columns were fabricated and subjected to axial compression tests, and the stress–strain curves were obtained. The research parameters included the number of BFRP layers and the volume content of BSs. Both types of specimens, with and without BFRP confinement, underwent brittle failure after reaching the ultimate bearing capacity. The increase in the number of BFRP layers had a positive effect on the bearing capacity and deformation capacity of the specimens. With the increase in the number of BFRP layers, the compressive strengths of BFCCCs were improved by 1.17–1.44 times, and the deformations were improved by 6.30–12.92 times, compared to the unconfined concrete. The addition of BSs could improve the ductility of the specimen, while the effect on the bearing capacity had an optimal value of 2.0%. The stress–strain curves of the BFCCCs showed obvious softening behavior after the peak point. Models were proposed to predict the axial stress–strain curves of BFCCCs reinforced with BSs.

中文翻译：

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BFRP 约束陶粒混凝土的压缩性能：实验研究和应力应变模型


研究了用竹条（BS）加固的玄武岩纤维增强聚合物（BFRP）约束陶粒混凝土柱（BFCCC）的新型结构。结构上体现了轻质、BS和FRP加固的特点。制作了36根BFCCC和18根无侧限陶粒混凝土柱并进行轴压试验，获得了应力-应变曲线。研究参数包括 BFRP 层数和 BS 的体积含量。两种类型的试件，无论有或没有 BFRP 约束，在达到极限承载力后都会发生脆性破坏。 BFRP层数的增加对试件的承载能力和变形能力有积极的影响。随着BFRP层数的增加，与无侧限混凝土相比，BFCC的抗压强度提高了1.17~1.44倍，变形提高了6.30~12.92倍。 BS的添加可以提高试件的延性，而对承载力的影响最佳值为2.0%。 BFCCC 的应力-应变曲线在峰值点后表现出明显的软化行为。提出了模型来预测 BS 增强的 BFCCC 的轴向应力-应变曲线。