摘要
分形理论作为一种描述复杂几何形状的数学工具,已被广泛应用于混凝土耐久性研究。尽管如此,目前尚缺乏对其系统性的综合描述。因此,本文旨在总结分形理论在混凝土耐久性研究中的应用进展,为未来采用分形方法研究混凝土耐久性提供理论参考和实践指导。文章首先探讨了分形理论应用于混凝土耐久性研究的契机,接着通过介绍分形维数的计算方法,综述了分形分析在刻画混凝土材料特性及其劣化过程中的应用。研究结果表明,分形维数与混凝土的孔隙率、氯离子扩散、抗冻性能和抗化学侵蚀能力等关键耐久性指标密切相关。这些发现不仅加深了对混凝土微观结构与宏观性能关系的理解,而且为混凝土耐久性的定量评估提供了新的量化工具,推动了混凝土科学的发展。
Fractal theory,as a mathematical tool for describing complex geometries,has been widely used in concrete durability studies.Nevertheless,a systematic and comprehensive description of it is still lacking.Therefore,this paper aims to summarize the progress of the application of fractal theory in the study of concrete durability,and provide theoretical references and practical guidance for the future study of concrete durability using fractal methods.The article firstly discusses the opportunities of applying fractal theory to the study of concrete durability,and then summarizes the application of fractal analysis in portraying concrete material properties and its deterioration process by introducing the calculation method of fractal dimension.The results show that the fractal dimension is closely related to the key durability indexes of concrete,such as the porosity of concrete,chloride ion diffusion,frost resistance,and resistance to chemical erosion.These findings not only deepen the understanding of the relationship between concrete microstructure and macroscopic properties,but also provide a new quantitative tool for the quantitative assessment of concrete durability,which promotes the development of concrete science.
作者
潘丽霞
唐孟雄
PAN Li-xia;TANG Meng-xiong(Guangzhou Institute of Building Science Group Co.,Ltd.,Guangzhou 510440;Guangzhou Construction Co.,Ltd.,Guangzhou 510030;Guangzhou Municipal Construction Group Co.,Ltd.,Guangzhou 510030)
出处
《广州建筑》
2024年第8期114-120,共7页
GUANGZHOU ARCHITECTURE
基金
广州市建筑集团有限公司科技计划项目([2023]-KJ020、[2024]-KJ029)
广州市院士专家工作站建设(创新中心-2024-D011)。
关键词
分形理论
混凝土耐久性
分形维数
微观结构
劣化特性
量化评估
fractal theory
concrete durability
fractal dimension
microstructure
deterioration characteristics
quantitative assessment