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玄武岩纤维增强地聚物混凝土劈裂特性研究
Study on the Splitting Characteristics of Basalt Fiber Reinforced Geopolymer Concrete
投稿时间:2023-06-01  修订日期:2023-07-26
DOI:
中文关键词:  玄武岩纤维  地聚物混凝土  劈裂抗拉试验  DIC技术
英文关键词:Basalt fiber  Geopolymer concrete  Splitting tensile test  DIC technology
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位邮编
张云寒 北京工业大学 100024
钟惟亮* 北京工业大学 100024
范立峰 北京工业大学 100024
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中文摘要:
      本文主要基于DIC技术研究玄武岩纤维掺量对地聚物混凝土劈裂抗拉性能的影响。首先,开展了玄武岩纤维地聚物混凝土的劈裂抗拉试验,并基于DIC技术研究了玄武岩纤维掺量对地聚物混凝土劈裂抗拉性能和劈裂破坏模式的影响,确定了具有最佳劈裂性能的地聚物混凝土的玄武岩纤维掺量。试验结果表明:1.00%玄武岩纤维掺量的地聚物混凝土具有最佳性能。相比于不掺入玄武岩纤维,地聚物混凝土的劈裂抗拉强度提高了41.4%,极限竖向变形提高了75.0%,最大应变降低了55.8%,最大裂缝宽度减少了65.1%。
英文摘要:
      In this study, the effect of basalt fiber content on the splitting tensile properties of geopolymer concrete was investigated based on digital image correlation (DIC) technology. Firstly, the splitting tensile tests of basalt fiber geopolymer concrete were carried out and the effects of basalt fiber content on the splitting tensile properties and the splitting failure mode of geopolymer concrete were studied based on DIC technology. Finally, the basalt fiber content of geopolymer concrete with the best splitting properties was proposed. The results showed that the geopolymer concrete with 1.0% basalt fiber content has the best splitting tensile properties. The splitting tensile strength, ultimate vertical deformation, maximum strain and maximum crack width of geopolymer concrete are increased by 41.4%, 75.0%, 55.8% and 65.1% respectively, compared with those without basalt fiber.
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