• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Jiao, Yubo (Jiao, Yubo.) | Fang, Menghan (Fang, Menghan.) | Han, Xiao (Han, Xiao.) | Yang, Hua (Yang, Hua.)

收录:

EI Scopus SCIE

摘要:

An ecological ultra-high-performance glass sand concrete (UHPGC) was prepared by partially replacing quartz sand in traditional ultra-high-performance concrete (UHPC) with glass sand recycled from waste glass. The four-point bending tests of UHPGC notched beams with different notch-depth ratios (0.2, 0.3, 0.4, and 0.5) were carried out, while acoustic emission (AE) monitoring was employed at the whole fracture process. Flexural toughness and residual flexural tensile strength were used to evaluate the flexural properties. Meanwhile, fracture energy and fracture toughness were used to evaluate the fracture properties. The results reveal that notchdepth ratio exhibits a significant effect on the flexural and fracture performances of UHPGC notched beams. The residual flexural tensile strength, flexural toughness, fracture energy and fracture toughness decrease with the increase of notch depth. Moreover, AE energy parameters can favorably characterize the differences of energy release in the fracture processes of UHPGC beams with different notch depths, and favorable correlations are observed between cumulative AE energy and fracture energy. Besides, AE wavelet entropy are constructed based on wavelet packet transform (WPT) of AE waveforms, and the evolution model of wavelet entropy is established. By comparing with the evolution process of AE energy information entropy, it is proved that the maximum point of wavelet entropy can be used as the key point to predict the peak load.

关键词:

UHPGC Flexural and fracture characteristics Acoustic emission Notch -depth ratio Wavelet entropy

作者机构:

  • [ 1 ] [Jiao, Yubo]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, State Key Lab Bridge Engn Safety & Resilience, Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Fang, Menghan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, State Key Lab Bridge Engn Safety & Resilience, Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Yang, Hua]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, State Key Lab Bridge Engn Safety & Resilience, Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Han, Xiao]CCCC Highway Bridges Natl Engn Res Ctr CO Ltd, Beijing, Peoples R China

通讯作者信息:

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

ENGINEERING FRACTURE MECHANICS

ISSN: 0013-7944

年份: 2023

卷: 290

5 . 4 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:19

被引次数:

WoS核心集被引频次:

SCOPUS被引频次:

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 0

归属院系:

在线人数/总访问数:471/4912263
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司