Chloride Erosion on Calcium Silicate Hydrate Gel in Concrete

Abstract:

Fire does great harm to concrete structure's safety and applicability. And it should not be neglected that fire also does great harm to concrete's durability. Due to fire's high temperature and harmful product, concrete in the fire scene undergoes severe chloride erosion. The mechanism that affect fire's erosion on concrete is different from usual conditions, and it deserves further study on both erosion mechanism, influence factors, chloride erosion prevention measures, and the Calcium Silicate Hydrate decomposition under high temperature, which can be of significant meaning in concrete structure damage evaluation and effective structure maintenance and reinforcement after fire.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 421-424
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.421
• Online since: May 2012
• Authors: Jian Zhang
• Keywords: Concrete, C-S-H Gel, Fire

References

[1] Climent-Llorca M A, Viqueira-Perez E, De Vera-Almenar G, et al. Chloride contamination of concrete by interaction with PVC combustion gases [J]. Cement and Concrete Research, 28(2) (1998), pp.209-219.

DOI: 10.1016/s0008-8846(97)00270-6

[2] Liuli Dong. Fire safety design of concrete structure[M]. BeiJing: Science Press (2001) . in Chinese.

[3] Weiliang Jing, Yuxi Zhao. Durability of concrete structure[M]. BeiJing: Science Press (2002). in Chinese.

[4] Tianqi Lu, Guopan Zhao, et al. Microscopic Analysis of Long Standing Concrete after High Temperature[J], Journal of Building Materials, Vol. 6 (2003), pp.135-141. in Chinese.