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- Title
碳纤维增强地聚物混凝土韧性评价指标的对比研究.
- Authors
朱靖塞; 许金余; 罗鑫; 李为民; 白二雷; 高志刚
- Abstract
The impact compression test of CFRGC(carbon fiber reinforced geopolymeric concrete) was conducted by using ∅ 100 split Hopkinson pressure bar apparatus improved with the pulse shaped technique. The impact toughness of CFRGC was studied comparably from the view of two kinds of evaluation indexes ,i. e. peak toughness and specific energy absorption(SEA). The results reveal that,from the point of peak toughness, CFRGC will show its advantages when volume fraction of carbon fiber is 0. 3%; from the point of specific energy absorption, energy absorption character is excellent when volume fraction of carbon fiber is 0. 2% and 0. 3%. The development tendency reflected by two kinds of impact toughness evaluation indexes is in some consistency, in which the former is strain rate-dependent, the latter is more effective and reasonable in evaluation of the impact toughness of CFRGC since carbon fiber can improve the impact toughness of geopolymeric concrete effectively.
- Publication
Jianzhu Cailiao Xuebao: Journal of Building Materials, 2014, Vol 17, Issue 2, p303
- ISSN
1007-9629
- Publication type
Article
- DOI
10.3969/j.issn.1007-9629.2014.02.022