玄武岩纤维改性高强自密实混凝土柱轴心受压试验
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东北林业大学 土木工程学院

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TU377.9

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国家自然科学基金项目(面上项目,重点项目,重大项目),黑龙江省交通运输厅重点科技项目


Experimental Study on Axial Compression of Basalt Fiber Modified High Strength Self - compacting Concrete Columns
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School of Civil Engineering, Northeast Forestry University

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    摘要:

    为研究玄武岩纤维的掺入对高强自密实混凝土柱轴心受力性能的影响,以玄武岩纤维体积掺量0.1%、0.2%和纤维长度15mm、30mm为参数,设计并制作了3根HSCC对比柱和12根玄武岩纤维改性HSCC柱,进行轴心受压试验。试验结果表明:相较对照组,掺入玄武岩纤维后,HSCC柱的极限承载力有一定程度提高。纤维长度为15mm、体积掺量为0.1%的HSCC柱提高幅度最大,达到19.6%;同等荷载作用下HSCC柱裂缝的出现、开展得到延缓,应变和变形减小;达到极限承载力时,对应的压应变和位移分别增大24.3%、20.6%,HSCC柱的延性得到显著提高。

    Abstract:

    In order to study the influence of basalt fibers incorporation on the stress performance of high strength and self-compacting concrete columns, 3 HSCC columns (as the control group) and 12 basalt fiber modified HSCC columns were made with parameters of 0.1%, 0.2% of basalt fiber volume content and 15mm, 30mm of fiber length respectively to conduct the axial compression experiment. The results show that the ultimate bearing capacity of HSCC columns was improved after incorporating basalt fiber. The maximum improvement of 16.9% comes from the HSCC column with fiber length and basalt fiber volume content of 15mm and 0.1% respectively. Under the same load, the appearance and development of cracks in HSCC columns are delayed, and the strain and deformation decrease. When the ultimate bearing capacity is reached, the corresponding compressive strain and displacement increase by 24.3% and 20.6%, respectively, and the ductility of HSCC columns is significantly improved.

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王钧,宋哲生,郭冬伟. 玄武岩纤维改性高强自密实混凝土柱轴心受压试验[J]. 科学技术与工程, 2019, 19(22): 273-279.
王钧,SongZhesheng, Guo Dongwei. Experimental Study on Axial Compression of Basalt Fiber Modified High Strength Self - compacting Concrete Columns[J]. Science Technology and Engineering,2019,19(22):273-279.

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  • 收稿日期:2019-01-21
  • 最后修改日期:2019-04-10
  • 录用日期:2019-04-17
  • 在线发布日期: 2019-08-28
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