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Open Access Article

Advances in Constructional Engineering. 2022; 2: (1) ; 58-63 ; DOI: 10.12208/j.ace.20220017.

Experimental study and statistical analysis for impact resistance of steel fiber reinforced RAC
钢纤维RAC抗冲击性能试验研究与统计分析

作者: 何文昌 *

湛江科技学院建筑工程学院 广东湛江

*通讯作者: 何文昌,单位:湛江科技学院建筑工程学院 广东湛江;

发布时间: 2022-05-09 总浏览量: 962

摘要

对钢纤维掺量为0.5%、1.0%和1.5%的再生混凝土(RAC)进行了自由落锤抗冲击性能试验研究,并利用数理统计的方法对钢纤维RAC试件初裂和破坏抗冲击次数的分布特征进行了拟合分析。试验结果表明:掺入钢纤维显著改善了RAC的初裂和破坏的抗冲击能力,并且改善效果随钢纤维掺量的增多而提高。拟合分析结果表明:不同钢纤维掺量RAC试件的初裂和破坏抗冲击次数的分布规律均较好地服从于对数正态分布特征。

关键词: 钢纤维;再生混凝土;抗冲击性能;对数正态分布

Abstract

The drop-weight impact resistance tests were carried out on recycled aggregate concrete (RAC) specimens reinforced with 0.5%,1.0% and 1.5% steel fiber, respectively. The mathematical statistical method was adopted to fit the distribution of initial and failure crack blow numbers. The experimental results indicate that the incorporation of the steel fiber significantly improved the impact resistance of RAC, and the impact resistance capacity of initial and failure crack increases with the increase of steel fiber content. The fitting results show that the impact resistance numbers of initial and failure crack are well subordinated to log-normal distribution.

Key words: Steel fiber; Recycled aggregate concrete; Impact resistance; Iog-normal distribution

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引用本文

何文昌, 钢纤维RAC抗冲击性能试验研究与统计分析[J]. 建筑工程进展, 2022; 2: (1) : 58-63.