Service life prediction of R.C structure incorporated with GGBS & silica fume subjected to chloride ion penetration

2020 ◽  
Vol 33 ◽  
pp. 245-252
Author(s):  
Bangla Gayaz Basha ◽  
Burugapalli Kameswara Rao ◽  
Chappidi Hanumantha Rao
Keyword(s):  
Service Life ◽  
Silica Fume ◽  
Life Prediction ◽  
Chloride Ion ◽  
Service Life Prediction ◽  
Chloride Ion Penetration ◽  
Ion Penetration

Service Life Prediction of Reactive Powder Concrete due to Seawater Infiltration

2012 ◽  
Vol 535-537 ◽  
pp. 1785-1789
Author(s):  
Xin Wei Ma ◽  
Yu Yan Ji
Keyword(s):  
Service Life ◽  
Life Prediction ◽  
Sea Water ◽  
Energy Dispersive Spectrometer ◽  
Chloride Ion ◽  
Service Life Prediction ◽  
Reactive Powder Concrete ◽  
Ion Diffusion ◽  
Marine Engineering ◽  
Reactive Powder

Reactive powder concrete (RPC) has a higher strengths, as well as excellent durability and corrosion resistance. So, it is expected to be increasingly used in marine engineering. In this study, After the RPC samples had been subjected to gradually increased high-pressure seawater for 30 days, the chloride contents in the samples along with the infiltration direction were calibrated on an energy dispersive spectrometer. On the basis of second Fick’s law, the chloride ion diffusion model and service life prediction model of reactive powder concrete in sea water are established. The service life of an actual reactive powder concrete structure could be predicted.

Test Research of Chloride Ion Penetration in Concrete Tunnel Lining Structure

2012 ◽  
Vol 446-449 ◽  
pp. 3155-3159
Author(s):  
Zhong Li ◽  
Yan Peng Zhu ◽  
Xiao Yan Cui
Keyword(s):  
Service Life ◽  
Penetration Depth ◽  
Chloride Ion ◽  
Chloride Content ◽  
Chloride Ions ◽  
Tunnel Lining ◽  
Chloride Ion Penetration ◽  
Lining Structure ◽  
Erosion Environment ◽  
Ion Penetration

Chloride ion diffusion coefficient is an important indicator reflected the concrete durability in chloride erosion environment, and affects the service life of concrete structure directly. By the indoor test of chloride acceleration permeability, the chloride ions diffusivity is studied in the tunnel lining structure, and the variation law of the chloride content is tested with the change of penetration depth of different age specimen. Tests shows, with the increases of the penetration depth, the chloride content decrease gradually and finally tend to the initial chloride content of the specimen. Penetration time has a strong cumulative effect on the internal concentration of chloride ions in concrete, the high or low level of chloride ion concentration have a role of promotion or reduction for the chloride ion penetration in the concrete inside. The results provide an important basis for the predictions of service life of tunnel lining in chloride erosion environment.

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