期刊
CEMENT & CONCRETE COMPOSITES
卷 34, 期 2, 页码 172-184出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2011.09.009
关键词
Blending effect; Hybrid fiber composite; Macro-fiber; Micro-fiber; Ultra High Performance Fiber Reinforced; Concrete
资金
- Korea Institute of Construction Technology
- Ministry of Knowledge Economy
- Korea Institute of Energy Technology Evaluation and Planning [2010161010004K]
- National Research Council of Science & Technology (NST), Republic of Korea [KICT2012-01] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2010161010004K] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The effects of blending fibers on the tensile behavior of Ultra High Performance Hybrid Fiber Reinforced Concrete (UHP-HFRC) are investigated. Four types of steel macro-fibers (of differing length or geometry) and one type of steel micro-fiber are considered. In producing the specimens, the volume content of the macro-fiber was held at 1.0%, whereas the volume content of the micro-fiber varied from 0.0% to 1.5%. The overall shape of tensile stress-strain curves of UHP-HFRC is primarily dependent upon the type of macro-fiber, although the addition of micro-fibers favorably affects the strain hardening and multiple cracking behaviors. UHP-HFRC produced from macro-fibers with twisted geometry provides the best performance with respect to post cracking strength, strain capacity and multiple micro-cracking behavior, whereas UHP-HFRC produced with long, smooth macro-fibers exhibits the worst performance. (C) 2011 Elsevier Ltd. All rights reserved.
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