Development of High Performance Grouting Method for PSC Strands

2019 International Conference on Smart Materials Applications

Yoon, In-Seok^1 ; Kim, Joo-Hwan^1 ; Jeon, Min-Jin^1 ; Jang, Seoung-Hwan^1

Dept. of Const. Info. Eng. Induk University, Seoul

01878, Korea, Republic of^1

关键词: Chloride ions;    Construction fields;    Corrosion tests;    ELectrochemical methods;    Grouting methods;    Posttensioning;    Structural stabilities;    Weight loss measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/559/1/012002/pdf
DOI  :  10.1088/1757-899X/559/1/012002

来源: IOP

【 摘 要 】

Prestressed concrete is very vulnerable to corrosion of strand because it has already been subjected to high tensile stress. The stability and durability of PSC have a very important relationship. In this study, many grouting specimens was made and the grouting performance used in the post tensioning construction fields were evaluated by the electrochemical method and weight loss measurement. The corrosion test was carried out in accordance with modification based on PTI M55.1-12 specification. Corrosion was activated by two types: corrosion by chloride ion (Cl-), and corrosion by chloride ion and dissolved oxygen (Cl-+ DO). The results showed that polymer is useful to maintain structural stability by reducing deterioration due to strands corrosion in PSC.