Performance of concrete beams reinforced with basalt fibre composite rebar
Performance of concrete beams reinforced with basalt fibre composite rebar
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DOI：
10.1016/j.conbuildmat.2018.04.208
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发表时间：
2018-07-10
影响因子：
7.4
通讯作者：
Das, Sreekanta
中科院分区：
文献类型：
--
作者：
Duic, Jason;Kenno, Sara;Das, Sreekanta
玄武岩纤维增强聚合物（BFRP）钢筋是一种新兴的绿色建筑材料。在这项研究中，与BFRP筋混凝土梁的性能进行了评估。进行了8根BFRP筋和普通钢筋混凝土梁的足尺试验。对试验数据进行了分析，以评价BFRP筋混凝土梁的抗剪和抗弯性能。结果表明，在低配筋率下，BFRP筋加固梁的弯曲和剪切开裂均比普通钢筋混凝土梁严重。根据CSA S6-14，还发现BFRP加固梁具有可接受的变形能力。与BFRP钢筋加固试样相比，钢筋加固试样的开裂力矩高出30-50%。研究还发现，剪切破坏可以控制BFRP筋钢筋混凝土梁的设计含有BFRP箍筋，和V-c是30-40%，BFRP筋加固梁。CSA S806-12标准在预测V-c时是保守的。然而，ACI 440.1-15标准被发现是不保守的，但在某些情况下准确预测V-c（C）2018 Elsevier Ltd.保留所有权利。
Basalt fibre reinforced polymer (BFRP) rebar is an emerging green construction material. In this research, performance of concrete beams reinforced with BFRP rebar has been evaluated. Full-scale tests on eight large-scale concrete beam specimens reinforced with either BFRP rebars or steel rebars were undertaken. The test data were analysed to evaluate the performance of BFRP rebar reinforced concrete beams in shear and flexure. It was found that at a low reinforcement ratio, BFRP rebar reinforced beams exhibited more flexural and shear cracking than counterpart steel rebar reinforced concrete beams. It was also found that BFRP reinforced beams exhibited acceptable deformability according to CSA S6-14. Cracking moments were found to be 30-50% higher for steel rebar reinforced specimens, compared to BFRP rebar reinforced specimens. The study also found that shear failure can govern the design of BFRP rebar reinforced concrete beams containing BFRP stirrups, and that V-c is 30-40% less for BFRP reinforced beams. The CSA S806-12 standard was found to be conservative in predicting V-c. However, ACI 440.1-15 standard was found to be unconservative, but in some cases accurately predicted V-c (C) 2018 Elsevier Ltd. All rights reserved.