Failure behaviour investigation of continuous yarn reinforced cementitious composites

Abstract In order to better understand the failure mechanism of continuous yarn reinforced cementitious composites, the interaction between yarn and matrix is studied in this work by means of pull-out behaviour analysis. Analytical, numerical and experimental investigation is carried out in order to provide a thorough understanding of the failure mechanisms. This work consists of three parts: In the first part, the pull-out behaviour of a yarn/matrix system is analyzed by an analytical model based on fracture mechanics concept. The shear failure at the interface between yarn and matrix is considered as the creation of a tunnel crack at the interface between yarn and matrix. The second part is concerned with the numerical modelling. The pull-out test is simulated by Finite Element Method. The numerical results are compared with the analytical results. The last part contributes to experimental study. The experimental results are compared with both the analytical results and numerical results. It has been shown that the numerical and experimental results are in good agreement with those obtained according to analytical model.

[1]  Antoine E. Naaman,et al.  Fiber Pullout and Bond Slip. II: Experimental Validation , 1991 .

[2]  P. Kabele.  Effects of chemical exposure on bond between synthetic fiber and cementitious matrix , 2006 .

[3]  V. Langlois.  Etude du comportement mécanique de matériaux cimentaires à renforts synthétiques longs ou continus , 2004 .

[4]  Surendra P. Shah,et al.  Pullout Problem: Stress versus Fracture Mechanical Approach , 1990 .

[5]  Henrik Stang,et al.  Interface Property Characterization and Strengthening Mechanisms in Fiber Reinforced Cement Based Composites , 1997 .

[6]  Surendra P. Shah,et al.  Failure of fibre-reinforced composites by pull-out fracture , 1986 .

[7]  V. Li,et al.  On Interface Property Characterization and Performance of Fiber Reinforced Cementitious Composites , 1999 .

[8]  D. J. Hannant,et al.  Modeling the Stress-Strain Response of Continuous Fber Reinforced Cement Composites , 1994 .

[9]  H. L. Cox.  The elasticity and strength of paper and other fibrous materials , 1952 .

[10]  Antoine E. Naaman,et al.  Bond Stress Model for Fiber Reinforced Concrete Based on Bond Stress-Slip Relationship , 1989 .

[11]  Hana Aljewifi,et al.  Etude du comportement mécanique à l'arrachement de fils multi-filamentaires enrobés dans une matrice cimentaire et influence de l'imprégnation , 2011 .

[12]  Antoine E. Naaman,et al.  Fiber Pullout and Bond Slip. I: Analytical Study , 1991 .

[13]  A. A. Griffith.  The Phenomena of Rupture and Flow in Solids , 1921 .

[14]  Josef Hegger,et al.  Neue Bauteile aus textilbewehrtem Beton , 2004 .

[15]  V. Laws,et al.  Micromechanical aspects of the fibre-cement bond , 1982 .

[16]  B. Fiorio,et al.  Pull-out behaviour of a glass multi-filaments yarn embedded in a cementitious matrix , 2010 .

[17]  V. Li,et al.  Steady-state and multiple cracking of short random fiber composites , 1992 .