Research on Test of Fracture Toughness and Fracture Criterion of Crack of Mixed Mode I and II of Steel Fiber Concrete

Abstract:

Steel fiber concrete is a new-type composite material of excellent property with broad application formed by common concrete mixed with disorderly oriented short steel fiber. Main action of steel fiber is to prevent broadening of interior micro crack in concrete and restrict occurrence and growth of macro crack. Based on basic theory of concrete fracture mechanics, this treatise adopts four-point shearing sampling material to conduct experimental research, having obtained critical fracture curve of crack of composite mode I, II of steel fiber concrete, setting up experimental formula of fracture criterion, probing into difference between fracture toughness of steel fiber concrete and that of common concrete, and discussing application of maximum tension stress theory in steel fiber concrete.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 1688-1691
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.1688
• Online since: March 2013
• Authors: Hong Da Zhang, Xin Sheng Xu
• Keywords: Fracture Criterion, Fracture Toughness, Steel Fiber Concrete

References

[1] Wang Duo, etc. Fractured Mechanics, Publishing House of Haerbin Polytechnic College, Haerbin, (1989)

[2] Xu Daoming, etc. Research on Test of Crack Criterion of Composite Mode I and II of Concrete Determined by Four Point Shearing Sampling Material, Water Conservancy Proceeding (1984)

[3] Deng Zongcai, etc. Experimental Research on Bent Toughness Index of Steel Fiber Concrete Beam, Proceeding of Shandong College of Building Material, (1995), Vol. 9, No. 1, pp.83-87

[4] Yu Xiaozhong, etc. Calculation and Experimental Research on fracture criterion of Crack of Composite Mode I and II of Concrete, Water Conservancy Proceeding, (June 1982)