Inner Damage and Anti-Chloride Penetration of High-Performance Concrete under Axial Tensile Load

Abstract:

The total porosity of high performance concrete specimens after different level uniaxial tensile loading were measured to reflect the damage degree of mechanical load to the microstructure of the concrete. Meanwhile, considering the environmental characteristics of the ocean tidal zone, chloride penetration tests of the concrete were carried out with salt solution capillary absorption method. Based on the profile of chloride measured from specimens, chloride diffusion coefficients of the concrete under uniaxial tensile load with different levels are determined further by Fick’s second law. Results show that both of total porosity and chloride diffusion coefficient of the concrete are increased significantly after short-term tensile loading. And the evolutions of the porosity and chloride diffusion coefficient are similar with the development of micro-cracks under uniaxial tensile load.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 1210-1214
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.1210
• Online since: May 2011
• Authors: Fu Xiang Jiang, Lei Xin, Tie Jun Zhao, Xiao Mei Wan
• Keywords: Chloride Penetration, Damage, High-Performance Concrete (HPC), Total Porosity, Uniaxial Tensile Load

References

[1] Mehta, Durability of Concrete , SP-126, American Concrete Institute, Farmington Hills, Mich (1991).

[2] ZHAO Tie-jun. Permeability of Concrete[M]. Science Press (2006) , in Chinese

[3] Liu Zhi-yong, Sun Wei, Yang Ding-yi. Industrial Construction, Vol134. No.16 (2004):pp.61-64, in Chinese

[4] ZHANG Yi. Mechanism of Chloride Ions Transportation in Concrete[D]. Zhejiang University, (2008), in Chinese

[5] FANG Yonghao, LI Zhiqing, ZHANG Yi tao. Journal of The Chinese Ceramic Society,Vol.33, No.10 (2005): pp.1281-1286, in Chinese

[6] YUAN Cheng-bin, ZHANG De-feng, LIU Rong-gui. Journal of Hohai University (Natural Sciences), Vol31. No.1 (2003): pp.50-54, in Chinese

[7] Gerard B, Breysse D, Ammouche A, Houdusse O, Didry O. Mater. Struct. No. 29 (1996): pp.141-151

DOI: 10.1007/bf02486159

[8] A. Konin, R. Francois, Arligie. Materials and Structures, Vol31, No.6 (1998): pp.310-316

[9] ZHAO Tie-jun. Surface Treatment with Permeable Coating and Durability of Concrete [M]. Science Press (2009), in Chinese

[10] Test Code of Concrete for Port and Waterwog Engineering (JTJ270-98) [S]. Industry Standard of the People's Republic of China (1998), in Chinese