中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2022, Vol. 41 ›› Issue (03): 107-112.DOI: 10.3969/j.issn.1674-0696.2022.03.16

• 交通基础设施工程 • 上一篇    下一篇

基于纹理特征的PVA纤维束搅拌分散均匀性研究

曹源文1,夏杰1,廖科1,曾建民2,程志豪3   

  1. (1. 重庆交通大学 机电与车辆工程学院,重庆 400074; 2. 河南郑州西绕城公路发展有限公司,河南 郑州 450052; 3. 云南省交通规划设计研究院,云南 昆明 650299)
  • 收稿日期:2020-07-28 修回日期:2020-10-20 发布日期:2022-03-24
  • 作者简介:曹源文(1963—),女,河北唐山人,教授,硕士,主要从事工程机械方面的研究。E-mail:37532992@qq.com 通信作者:夏杰(1996—),男,重庆人,硕士研究生,主要从事工程机械方面的研究。E-mail:1592928546@qq.com
  • 基金资助:
    河南省交通运输厅科技项目(Hnxrc2018001);云南省交通运输厅科技项目(2017(A)15)

Stirring and Dispersing Uniformity of PVA Fiber Bundle Based on Texture Features

CAO Yuanwen1, XIA Jie1, LIAO Ke1, ZENG Jianmin2, CHENG Zhihao3   

  1. (1. School of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 2. Henan Zhengzhou West-Ring Road Development Co., Ltd., Zhengzhou 450052, Henan, China; 3. Yunnan Institute of Transportation Planning and Design, Kunming 650299, Yunnan, China)
  • Received:2020-07-28 Revised:2020-10-20 Published:2022-03-24

摘要: 为提高PVA纤维束在水泥基中搅拌分散的均匀性,利用数字图像处理技术,基于PVA纤维束的纹理特征;采用灰度共生矩阵理论,开展PVA纤维束搅拌分散试验并进行了均匀性研究。得到不同工况下PVA纤维的统计型纹理特征;给出了角二阶矩和熵值与质量比、搅拌转速及搅拌时间的关系变化曲线;并进行了均匀性评价分析。研究结果表明:利用PVA纤维的统计型纹理特征可快速、准确地评价PVA纤维的搅拌分散均匀性,最佳PVA纤维束与粉煤灰质量比1∶45,最佳搅拌转速700 r/min及搅拌时间3 min,可提高PVA纤维束的搅拌分散效果。

关键词: 道路工程;纹理特征;PVA纤维;搅拌分散;均匀性

Abstract: In order to improve the uniformity of PVA fiber bundle mixing and dispersing in cement matrix, the PVA fiber bundle stirring and dispersion test was carried out and the uniformity was studied by digital image processing technology and adopting gray level co-occurrence matrix theory, which was based on the texture characteristics of PVA fiber bundles. The statistical texture characteristics of PVA fiber under different working conditions were obtained, and the variation curves of the relationship between the angular second-order moment, entropy value and mass ratio, stirring speed and stirring time were given, and the uniformity evaluation was analyzed. The research results show that the statistical texture characteristics of PVA fiber can be used to quickly and accurately evaluate the mixing and dispersing uniformity of PVA fiber. The optimal mass ratio of PVA fiber bundle to fly ash is 1∶45, the optimal mixing speed is 700 r/min and the optimal stirring time is 3 min, which can improve the stirring and dispersing effect of PVA fiber bundles.

Key words: highway engineering; texture characteristics; PVA fiber; mixing and dispersion; uniformity

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