Experimental Investigation of the Relationship between Surface Crack of Concrete Cover and Corrosion Degree of Steel Bar Using Fractal Theory

被引：17

作者：

Li, Weiwen ^{[1
]}

Wu, Meizhong ^{[1
]}

Shi, Tiansheng ^{[1
]}

Yang, Pengfei ^{[1
]}

Pan, Zejie ^{[1
]}

Liu, Wei ^{[1
]}

Liu, Jun ^{[1
]}

Yang, Xu ^{[2
]}

机构：

[1] Shenzhen Univ, Guangdong Prov Key Lab Durabil Marine Civil Engn, Shenzhen 518060, Peoples R China

[2] Harbin Inst Technol, Coll Civil & Environm Engn, Shenzhen 518055, Peoples R China

来源：

FRACTAL AND FRACTIONAL | 2022年 / 6卷 / 06期

基金：

中国国家自然科学基金;

关键词：

reinforced concrete (RC); steel corrosion; durability; fractal dimension; pixel-covering method; non-destructive testing (NDT); MONITORING REINFORCEMENT CORROSION; PARTICLE-SIZE DISTRIBUTION; PERFORMANCE; ROUGHNESS; TOUGHNESS; DIMENSION; REBAR;

D O I：

10.3390/fractalfract6060325

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

Conventionally, crack width is used to assess the corrosion level, whereas other important characteristics such as the variation in crack width at different locations on the surface are disregarded. These important characteristics of surface crack can be described comprehensively using the fractal theory to facilitate the assessment of the corrosion level. In this study, the relationship between steel corrosion and the fractal characterization of concrete surface cracking is investigated. Reinforced concrete prisms with steel bars of different diameters and with different corrosion rates were evaluated. High-resolution images of cracks on the surfaces of these specimens were captured and processed to obtain their fractal dimensions. Finally, a relationship between the fractal dimension, steel bar diameter, and the corrosion rate is established. The results show that the fractal dimension is associated closely with the corrosion rate and steel bar diameter. This study provides new ideas for evaluating corroded reinforced concrete structures.

引用

页数：15

共 21 条

[21] Experimental investigation on the relationship between the spatial variation of steel weight loss and the cracking width of RC members using X-ray photograms
Lim, S.
Jiang, H.
Akiyama, M.
Frangopol, D. M.
LIFE-CYCLE OF STRUCTURAL SYSTEMS: DESIGN, ASSESSMENT, MAINTENANCE AND MANAGEMENT, 2015, : 429 - 436

← 1 2 3 →