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论文类型：期刊论文

发表时间：2017-04-01

发表刊物：CONSTRUCTION AND BUILDING MATERIALS

收录刊物：SCIE、EI

卷号：136

页面范围：495-505

ISSN号：0950-0618

关键字：Self-compacting concrete; Impact behavior; Drop-weight test; Composite effect; Weibull distribution

摘要：In this study, the impact behavior of ten types of high performance self-compacting concrete (HPSCC) was explored using the drop-weight method. The HPSCC specimens were reinforced with steel rebars and different fibers for comparison with plain concrete. The reinforcement mechanism of the influences of steel rebars and different fibers on failure impact energy was explained. The composite effects of hybrid use of steel rebars with different fibers on the failure impact energy were also compared. The penetration depth for each mixture was analyzed. Test results showed that the macro fibers could greatly improve the failure impact energy both in plain and reinforcement concrete. Moreover, the toughness, penetration depth, stress redistribution could be improved obviously due to the positive hybrid effect of rebars and macro fibers in reinforced concrete. The statistical analysis technique was introduced to evaluate the experimental data, and the goodness of fit tests showed that the distribution of the blow numbers to the first crack and up to the final failure followed the two-parameter Weibull distribution. (C) 2017 Elsevier Ltd. All rights reserved.