[1]陈歆,郑秀华,韩凯.玄武岩纤维掺杂混凝土材料特性研究[J].深圳大学学报理工版,2019,36(1):61-66.[doi:10.3724/SP.J.1249.2019.01061]
　CHEN Xin,ZHENG Xiuhua,and HAN Kai.Characterization of basalt fiber doped concrete materials[J].Journal of Shenzhen University Science and Engineering,2019,36(1):61-66.[doi:10.3724/SP.J.1249.2019.01061]
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玄武岩纤维掺杂混凝土材料特性研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第36卷
期数:
2019年第1期
页码:
61-66
栏目:
土木建筑工程
出版日期:
2019-01-20

文章信息/Info

Title:
Characterization of basalt fiber doped concrete materials
作者:
陈歆1; 郑秀华2; 韩凯3
1）苏交科集团股份有限公司在役长大桥梁安全与健康国家重点实验室，江苏南京 211112； 2）哈尔滨工业大学交通科学与工程学院, 黑龙江哈尔滨，150090； 3）中设设计集团股份有限公司道桥新技术研究中心，江苏南京，210014
Author(s):
CHEN Xin1;  ZHENG Xiuhua2;  and HAN Kai3
1) State Key Laboratory of Safety and Health for In-service Long Span Bridges (JSTI Group), Nanjing 211112, Jiangsu Province, P.R.China 2) School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang Province, P.R.China 3) Research Center of New Technology on Roads and Bridges, China Design Group, Nanjing 210014, Jiangsu Province, P.R.China
关键词:
建筑材料; 混凝土; 玄武岩纤维; 抗折强度; 抗压强度; 氯离子渗透
Keywords:
building materials;  concrete;  basalt fiber;  flexural strength;  compressive strength;  chloride-ion penetration
分类号:
TU 528.572
DOI:
10.3724/SP.J.1249.2019.01061
摘要:
玄武岩纤维能有效改善混凝土材料的性能，但其对混凝土性能的影响规律还存在一定分歧. 以抗压和抗折强度作为力学指标，以抗氯离子渗透性能和早期收缩应变作为耐久性指标，探究不同玄武岩纤维掺量和规格对混凝土强度与耐久性的影响规律，分析短切玄武岩纤维掺杂混凝土材料的各项性能. 研究结果表明，短切玄武岩纤维对混凝土抗压强度的提高不明显，但对抗折强度则随掺量的增加而提高显著；纤维的体积分数为0.12%时，混凝土抗折强度提高约25%；长度较长及长径比较大的玄武岩纤维对混凝土抗折强度有更好的提高效果.玄武岩纤维的掺入会使混凝土抗渗性能略有下降，但也能有效降低混凝土的收缩应变，掺加玄武岩纤维后，混凝土28 d收缩应变降低约15%.
Abstract:
Basalt fiber can effectively improve properties of concrete materials. However, there are some divergences for its effects on concrete properties. Therefore, in this paper, effects of various fiber contents and sizes on concrete strength and durability are investigated, and properties of chopped basalt fiber doped concrete materials are characterized. In the research, compressive strength and flexural strength are used as mechanical indexes, while resistance to chloride-ion penetration and early-age shrinkage are used as durability indexes. Results show that although the contribution of basalt fiber to compressive strength of concrete is not obvious, flexural strength of concrete increases significantly as fiber content increases. There is a 25% increase when fiber content reaches 0.12%. Longer length and higher length/diameter ratio would bring further strengthening. Basalt fiber causes a slight decrease in concrete’s impermeability, but it can effectively restrain the shrinkage strain. With basalt fiber, decrease of shrinkage strain of concrete in 28 d is about 15%.

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更新日期/Last Update: 2019-01-30