- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | LAI Jun, CAI Jian, ZUO Zhiliang, FENG Yinian. Non-uniform Corrosion and Load Bearing Capacity Deterioration Tests of Reinforced Concrete Beams Under Load and Chloride Salt Environment[J]. Journal of Southwest Jiaotong University, 2024, 59(5): 1140-1147, 1157. doi: 10.3969/j.issn.0258-2724.20220038
|
To explore how sustained loading and drying-wetting cycles of chloride salt affect the flexural behavior of reinforced concrete (RC) beams, the corrosion tests and flexural capacity tests of 19 RC beams were carried out at first. The effects of various sustained loading grades and drying-wetting cycle periods were studied on the crack distribution, the mass corrosion rate of longitudinal reinforcements, and the flexural behavior of corroded members. The relationship was summarized between the maximum and average mass corrosion rate of longitudinal reinforcements and the flexural bearing capacity reduction ratio. The study results show that the corrosion degree of longitudinal reinforcements was higher in the pure bending segment than in other areas, and distributed non-uniformly along the circumference of the longitudinal reinforcements. There was no noticeable correlation between the position of the extreme mass corrosion rate of longitudinal reinforcements and the occurrence position of initial transverse cracks. The maximum mass corrosion rate of longitudinal reinforcements increased with the loading grade and drying-wetting cycle period, and was more notably affected by the drying-wetting cycle period. The peak load of the beam decreased after corrosion. When the mass corrosion rate of the longitudinal reinforcements was low (average value below 3% or maximum value above 6%), the correlation between the mass corrosion rate and the reduction ratio of bearing capacity was low, and the maximum mass corrosion rate has less correlation with the reduction ratio of bearing capacity than the average mass corrosion rate. When the mass corrosion rate of longitudinal reinforcements increased (average value above 3% or maximum value above 6%), both the maximum and the average mass corrosion rates of longitudinal reinforcements had an increased correlation with the reduction ratio of bearing capacity. When the average mass corrosion rate of longitudinal reinforcements is the same, the reduction of bearing capacity of specimens with natural corrosion is higher than that of specimens with external current corrosion.
| [1] |
ZHANG D F, XIONG J B, WANG S N, et al. Comparative study on the durability of pile, beam and slab reinforced concrete structure in marine environment[J]. IOP Conference Series: Earth and Environmental Science, 2021, 719(2): 022027.1-022027.15. doi: 10.1088/1755-1315/719/2/022027
|
| [2] |
金伟良. 氯盐环境下混凝土结构耐久性理论与设计方法[M]. 北京: 科学出版社,2011: 135-140.
|
| [3] |
YIN S P, HUA Y T, YU Y L. Flexural durability and chloride diffusion equation of TRC-strengthened beams under a chloride environment[J]. KSCE Journal of Civil Engineering, 2020, 24(6): 1868-1880. doi: 10.1007/s12205-020-1640-7
|
| [4] |
FRANÇOIS R, ARLIGUIE G. Influence of service cracking on reinforcement steel corrosion[J]. Journal of Materials in Civil Engineering, 1998, 10(1): 14-20. doi: 10.1061/(ASCE)0899-1561(1998)10:1(14)
|
| [5] |
YU L W, FRANÇOIS R, DANG V H, et al. Development of chloride-induced corrosion in pre-cracked RC beams under sustained loading: effect of load-induced cracks, concrete cover, and exposure conditions[J]. Cement and Concrete Research, 2015, 67: 246-258. doi: 10.1016/j.cemconres.2014.10.007
|
| [6] |
左志亮,张帆,罗赤宇,等. 缓黏结预应力混凝土梁耐久性能试验研究[J]. 土木工程学报,2019,52(9): 69-78.
ZUO Zhiliang, ZHANG Fan, LUO Chiyu, et al. Research on durability of retard-bonded prestressed concrete beams[J]. China Civil Engineering Journal, 2019, 52(9): 69-78.
|
| [7] |
LU Z H, LI H, LI W G, et al. Shear behavior degradation and failure pattern of reinforced concrete beam with chloride-induced stirrup corrosion[J]. Advances in Structural Engineering, 2019, 22(14): 2998-3010. doi: 10.1177/1369433219855917
|
| [8] |
郭诗惠,刘炳. 锈蚀钢筋混凝土梁抗弯承载力计算与分析[J]. 建筑结构,2017,47(4): 44-48.
GUO Shihui, LIU Bing. Calculation and analysis of flexural bearing capacity of corroded reinforced concrete beams[J]. Building Structure, 2017, 47(4): 44-48.
|
| [9] |
何世钦,王海超,贡金鑫. 荷载与锈蚀共同作用下钢筋混凝土梁抗弯试验研究[J]. 水力发电学报,2007,26(6): 46-51. doi: 10.3969/j.issn.1003-1243.2007.06.009
HE Shiqin, WANG Haichao, GONG Jinxin. Study on flexural experiment of reinforced concrete beams under simultaneous service loading and corrosion[J]. Journal of Hydroelectric Engineering, 2007, 26(6): 46-51. doi: 10.3969/j.issn.1003-1243.2007.06.009
|
| [10] |
金伟良,王毅. 持续荷载与氯盐作用下钢筋混凝土梁力学性能试验[J]. 浙江大学学报(工学版),2014,48(2): 221-227.
JIN Weiliang, WANG Yi. Experimental study on mechanics behaviors of reinforced concrete beams under simultaneous chloride attacks and sustained load[J]. Journal of Zhejiang University (Engineering Science), 2014, 48(2): 221-227.
|
| [11] |
HE S Q, CAO Z Y, LIU W J, et al. Experimental study on long-term performance of reinforced concrete beams under a sustained load in a corrosive environment[J]. Construction and Building Materials, 2020, 234: 117288.1-117288.11. doi: 10.1016/j.conbuildmat.2019.117288
|
| [12] |
YUAN Y, JI Y, SHAH S P. Comparison of two accelerated corrosion techniques for concrete structures[J]. ACI Structural Journal, 2007, 104(3): 344-347.
|
| [13] |
混凝土结构设计规范:GB 50010—2010 [S]. 北京: 中国建筑工业出版社,2011.
|
| [14] |
American Society for Testing and Materials. Standard specification for portland cement: ASTM C150[S]. Pennsylvania: West Conshohocken, 2020.
|
| [15] |
BALLIM Y, REID J C. Reinforcement corrosion and the deflection of RC beams––an experimental critique of current test methods[J]. Cement and Concrete Composites, 2003, 25(6): 625-632. doi: 10.1016/S0958-9465(02)00076-8
|
| [1] | ZHANG Junyun, ZHANG Le, GAO Fuzhou, TANG Yongji, HE Zhuoling, WANG Ying. Experimental Study on Strength and Deformation Characteristics of Red-Bed Soil-Rock Mixture Under Wetting-Drying Cycles[J]. Journal of Southwest Jiaotong University, 2023, 58(6): 1394-1404. doi: 10.3969/j.issn.0258-2724.20220343 |
| [2] | LIU Tingbin, JIA Rubo, ZHANG Chenyu, JIN Wenqiang, ZHAO Jianchang. Bending Capacity Calculation Method for Corroded Reinforced Concrete Beams[J]. Journal of Southwest Jiaotong University, 2020, 55(4): 789-795. doi: 10.3969/j.issn.0258-2724.20190277 |
| [3] | SU Chengguang, LIU Dan, ZHAO Pingrui, LIU Xueyi. Meso-mechanical Effect of Track Slab Rebar Corrosion[J]. Journal of Southwest Jiaotong University, 2020, 55(2): 273-281, 289. doi: 10.3969/j.issn.0258-2724.20190321 |
| [4] | ZHOU Xiling, XIE Youjun, ZHENG Keren, ZENG Xiaohui. Effect of Wetting-Drying Cycles on Mass and Deformation of Cement and Emulsified Asphalt Mortar[J]. Journal of Southwest Jiaotong University, 2019, 54(4): 786-792. doi: 10.3969/j.issn.0258-2724.20180261 |
| [5] | KONG Weiyi, FU Chuanguo, LIU Weiqing. Fire Resistance Analysis of RC Beam Supporting Column Transfer Structure Joints[J]. Journal of Southwest Jiaotong University, 2019, 54(3): 548-555. doi: 10.3969/j.issn.0258-2724.20170875 |
| [6] | XU Tengfei, XIANG Tianyu, ZHAO Renda. Long-Term Random Deflection of Eccentrically Loaded RC Column[J]. Journal of Southwest Jiaotong University, 2014, 27(4): 626-630. doi: 10.3969/j.issn.0258-2724.2014.04.010 |
| [7] | LI Song, QIANG Shizhong, TANG Ying. Parametric Investigation of Ultimate Bearing Capacity of Reinforced Concrete Arch Bridges[J]. Journal of Southwest Jiaotong University, 2007, 20(3): 293-298. |
| [8] | CHEN Ying, ZHANG Xin-pei, ZHU Chang-chun. Time-History Reliability Analysis of Reinforced Concrete Frames under Frequent Earthquakes[J]. Journal of Southwest Jiaotong University, 2003, 16(2): 169-172. |
| [9] | DANDan-hui, HE Guang-han. Analysis on the Effect of Stresses on Corrosion of Reinforcing Steels[J]. Journal of Southwest Jiaotong University, 2001, 14(2): 181-184. |
| [10] | DAN Dan-hui, WANG Qing-ling. Computer Simulation of Corrosive Cracks on RC Members[J]. Journal of Southwest Jiaotong University, 2000, 13(5): 484-487. |
| 1. | 邓文彬，杨丽，孙常康. 冻融循环下混凝土疲劳损伤试验研究. 新疆大学学报(自然科学版中英文). 2024(06): 738-745 .  |
Figures(12) / Tables(4)
CHEN Yu, AN Boyang, PAN Zili, MO Hongyuan, WANG Ping, FANG Jiasheng, QIAN Yao, XU Jingmang. Analysis of Wheel-Rail Contact and Wear Considering Variable Cross-Sections of Switch Rail[J]. Journal of Southwest Jiaotong University, 2022, 57(6): 1250-1258. doi: 10.3969/j.issn.0258-2724.20210040
DownLoad:
