Revised Chloride Diffusion Model of Concrete Bridge Near Coastal Areas and Its Application

GUO Dong-mei, XIANG Yi-qiang, CHENG Kun, LIN Shi-xu, LI Wei

China Journal of Highway and Transport ›› 2012, Vol. 25 ›› Issue (5) : 89-94.

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China Journal of Highway and Transport ›› 2012, Vol. 25 ›› Issue (5) : 89-94.
Original Article

Revised Chloride Diffusion Model of Concrete Bridge Near Coastal Areas and Its Application

  • GUO Dong-mei1, XIANG Yi-qiang1, CHENG Kun1, LIN Shi-xu2, LI Wei2
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Abstract

In order to provide reliable theoretical foundation for durability of in-service reinforced concrete bridges in coastal environment, aimed at the main factor-the invasion of chlorideion, which causes the reinforced steel corrosion that affects the durability of concrete bridges, from the perspective of the chloride diffusion, reviewing the works on chloride diffusion mathematical model, a revised model was put forward to predict the trend of chloride diffusion by considering the load factor and chlorineion combining ability. With relevant experimental data at home and abroad, the validity of the presented model was verified. The results show that the revised model is more reasonable, compared with the traditional chloride diffusion model only considering the mono factor, thus can precisely predict the left service life of in-service concrete bridges in coastal environment.

Key words

bridge engineering / concrete bridge / chloride diffusion model / load factor / chlorine ion combining ability

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GUO Dong-mei, XIANG Yi-qiang, CHENG Kun, LIN Shi-xu, LI Wei. Revised Chloride Diffusion Model of Concrete Bridge Near Coastal Areas and Its Application[J]. China Journal of Highway and Transport, 2012, 25(5): 89-94

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