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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (1): 92-102.DOI: 10.16552/j.cnki.issn1001-1625.2025.0646

• 水泥混凝土 • 上一篇    下一篇

基于数字图像相关的玄武岩纤维泡沫混凝土压缩损伤研究

安仰壮(), 俞海(), 刘昌庚   

  1. 北方民族大学土木工程学院,银川 750021
  • 收稿日期:2025-07-03 修订日期:2025-08-09 出版日期:2026-01-20 发布日期:2026-02-10
  • 通信作者: 俞海,博士,副教授。E-mail:yuhai1212@126.com
  • 作者简介:安仰壮(2000—),男,硕士研究生。主要从事工程材料方面的研究。E-mail:18863788015@163.com
  • 基金资助:
    宁夏自然科学基金(2023AAC03266);宁夏高等学校优秀青年项目(NYG2022057)

Compressive Damage of Basalt Fiber Reinforced Foam Concrete Based on Digital Image Correlation

AN Yangzhuang(), YU Hai(), LIU Changgeng   

  1. School of Civil Engineering,North Minzu University,Yinchuan 750021,China
  • Received:2025-07-03 Revised:2025-08-09 Published:2026-01-20 Online:2026-02-10

摘要:

为研究玄武岩纤维泡沫混凝土的压缩损伤演化规律,本文通过准静态压缩试验,利用数字图像相关技术进行全场应变分析,探讨了基体密度(600~1 200 kg/m3)和玄武岩纤维体积掺量(0%~0.5%)对玄武岩纤维泡沫混凝土力学性能及损伤行为的影响。结果表明,玄武岩纤维体积掺量为0.3%或0.4%时,玄武岩纤维泡沫混凝土的极限抗压强度提升效果最佳。玄武岩纤维泡沫混凝土的压缩过程可分为压密阶段、线弹性阶段、塑性阶段及破坏阶段。同时,本研究基于数字图像相关技术获取的全场、全程应变数据定义了损伤程度因子与损伤局部化系数,对材料损伤程度与局部化行为进行了定量表征与分析。玄武岩纤维的加入可以有效提高玄武岩纤维泡沫混凝土的起始损伤荷载,有效延缓损伤发展进程,并且降低损伤局部化程度,使材料破坏模式有所改变。

关键词: 玄武岩纤维, 泡沫混凝土, 数字图像相关, 力学性能, 损伤程度因子, 损伤局部化

Abstract:

To investigate the compressive damage evolution law of basalt fiber reinforced foam concrete, this paper employed quasi-static compression tests and utilized digital image correlation technology for full-field strain analysis. It explored the effects of matrix density (600~1 200 kg/m3) and basalt fiber volume content (0%~0.5%) on the mechanical properties and damage behavior of basalt fiber reinforced foam concrete. The results indicate that the most significant improvement in the ultimate compressive strength of basalt fiber reinforced foam concrete is achieved when the basalt fiber volume content is 0.3% or 0.4%. The compression process of basalt fiber reinforced foam concrete can be divided into four stages: compaction, linear elastic, plastic, and failure. Furthermore, based on the full-field, full-process strain data acquired via digital image correlation, this study defined a damage degree factor and a damage localization coefficient to quantitatively characterize and analyze the material’s damage extent and localization behavior. The incorporation of basalt fiber effectively increases the initial damage load of basalt fiber reinforced foam concrete, delays the damage evolution process, reduces the degree of damage localization, and alters the material’s failure mode.

Key words: basalt fiber, foam concrete, digital image correlation, mechanical property, damage degree factor, damage localization

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