Prediction of Chloride Distribution for Offshore Concrete Based on Statistical Analysis

Materials

Zhi Hu¹  Iftikhar Azim¹  Xian-yang Lu²  Qing-feng Liu³  Jian Yang³  Wenzhuo Sun³ 

[1] Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;School of Architecture, Building and Civil Engineering, Loughborough University, Loughborough LE11 3TU, UK;;State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean &

关键词: chloride;    durability;    long-term behaviour;    offshore concrete;    statistical analysis;   

DOI  :  10.3390/ma13010174

来源: DOAJ

【 摘 要 】

Chloride-induced corrosion is the main threat to the service life of concrete structures. In order to better investigate chloride distribution in offshore concrete, this study proposed a new prediction model based on statistical analysis as well as a large body of experimental results collected from various sources. A detailed discussion found that the key influential parameters, such as diffusion coefficient ( $D$ ), surface chloride concentration ( $C_S$ ) and penetration depth ( $x$ ) are all highly time-dependent. The exposure zone, water–cement ratio and service time were also considered as relevant factors. The proposed model is then validated by two alternative tests and the results suggest that it is feasible in predicting the chloride content and penetration depth of concrete structures in a marine environment under chloride attack.

【 授权许可】

Unknown