Experimental Study on Resistance of Hybrid Fiber Reinforced Concrete to Freezing and Thawing

Abstract:

Experiments were conducted to study the resistance of steel-polypropylene hybrid fiber reinforced concrete (HFRC) to freezing and tharwing. The mix proportions of concrete in strength grade CF40 were designed according to the superposition mix design method, where five mass contents of polypropylene fiber changing in range of 0.3~1.5kg/m³ with 0.3kg/m³ increment while the fraction of steel fiber by volume was constant as 1.0%, and four fractions of steel fiber by volume changing in range of 0.5~2.0% with 0.5% increment while the mass content of polypropylene fiber was kept as 0.9kg/m³. The results show that the steel-polypropylene hybrid fiber can significantly increase the resistance of HFRC to freezing and thawing, the losses of dynamic elasticity modulus and flexural strength of HFRC decrease with the increasing mass content of polypropylene fiber and fraction of steel fiber by volume, there is the coupling effect of enhancing on resistance of HFRC to freezing and thawing by hybrid fibers.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 309-313
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.309
• Online since: October 2013
• Authors: Hong Yuan Huo, Liang Zhang, Tong Xing
• Keywords: Flexural Strength, Hybrid Fiber Reinforced Concrete, Polypropylene Fiber, Resistance to Freezing, Steel Fiber (SF), Thawing

References

[1] Wu Z., H. Lian, High Performance Concrete, China Railway Press, Beijing, (1999).

[2] Deng Z., High Performance Synthetic Fiber Concrete, Science Press, Beijing, (2003).

[3] Zhao J., X. Cai, W. Jiang: The experimental study of the crack resistance and impermeability of hybrid fiber reinforced concrete performance, in: The Summary of the Eleventh National Conference on Fiber Concrete Academic, Press of Dalian University of Technology, (2004).

[4] CECS38: 2004, Technical Specification for Fiber Reinforced Concrete Structures, China Plan Press, Beijing, (2004).

[5] GB8076-2008, Concrete Additives, China Standard Press, Beijing, (2009).

[6] Zhao S., H. Huo, C. Song, L. Song, Binary superposition mix design method for SFRC Part I: principle and evaluation, Advanced Materials Research, Vols. 168-170 (2011) 2186-2190.

DOI: 10.4028/www.scientific.net/amr.168-170.2186

[7] CECS13: 2009, Standard of Test Method for Fiber Reinforced Concrete, China Plan Press, Beijing, (2010).

[8] Li G., Y. Zhao, S. Pang, Cement and Concrete Research, Vol. 29 No. 6 (1999) 839-845.

[9] C. Huang, Fiber Reinforced Concrete Structure, Mechanical Industry Press, Beijing, (2005).