Characterization of Interfacial Properties in Fiber‐Reinforced Cementitious Composites

For calculating interface properties from pullout tests, a simple theoretical model is proposed. The model enables calculating of the following material parameters: the parameter of shear stiffness of the fiber–matrix boundary layer, the shear bond strength, the frictional bond strength and the specific interfacial fracture energy. These parameters can be determined from the slope of the load-slip curve, the maximum pullout load and the corresponding slip value. Slip-controlled, multiple-fiber pullout tests were conducted in a closed-loop test system. The effects of embedment length of fibers on the model-predicted material parameters were examined. The model predictions were satisfactorily compared with some previously published test data.

[1]  J. I. Daniel,et al.  Toughness-Durability of Glass Fiber Reinforced Concrete Systems , 1988 .

[2]  R. J. Gray,et al.  Analysis of the effect of embedded fibre length on fibre debonding and pull-out from an elastic matrix , 1984 .

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

[4]  L. Greszczuk.  Theoretical Studies of the Mechanics of the Fiber-Matrix Interface in Composites , 1969 .

[5]  Surendra P. Shah,et al.  Two Parameter Fracture Model for Concrete , 1985 .

[6]  P. Beaumont,et al.  Cracking and toughening of concrete and polymer-concrete dispersed with short steel wires , 1978 .

[7]  Concentrated body force loading of an elastically bridged penny shaped flaw in a unidirectional fibre reinforced composite , 1983 .

[8]  B. Cotterell,et al.  Fracture of fiber-reinforced materials , 1988 .

[9]  B. A. Proctor,et al.  Developments in the assessment and performance of grc over 10 years , 1982 .

[10]  D. Marshall,et al.  Measurement of Interfacial Mechanical Properties in Fiber‐Reinforced Ceramic Composites , 1987 .

[11]  A. A. Langley,et al.  The glass fibre/cement bond , 1986 .

[12]  T. Mura,et al.  An inclusion model for crack arrest in fiber reinforced materials , 1984 .

[13]  B. Proctor,et al.  The use of accelerated ageing procedures to predict the long term strength of GRC composites , 1981 .

[14]  R. Arridge,et al.  The effect of interfacial radial and shear stress on fibre pull-out in composite materials , 1973 .

[15]  Y. Malier,et al.  Effect of steel fibres at two different stages: The material and the structure , 1987 .

[16]  R. J. Gray.  Analysis of the effect of embedded fibre length on fibre debonding and pull-out from an elastic matrix , 1984 .

[17]  Reinforcement of brittle matrices by glass fibres , 1973 .

[18]  Barzin Mobasher,et al.  MICROCRACKING IN FIBER REINFORCED CONCRETE , 1990 .

[19]  H. Stang,et al.  A double inclusion model for microcrack arrest in fibre reinforced brittle materials , 1987 .

[20]  C. Hsueh,et al.  Elastic load transfer from partially embedded axially loaded fibre to matrix , 1988 .

[21]  G. W. Groves,et al.  The debonding and pull-out of ductile wires from a brittle matrix , 1979 .

[22]  S. Diamond,et al.  The contact zone between portland cement paste and glass “aggregate” surfaces , 1978 .

[23]  B. Budiansky,et al.  Toughening by aligned, frictionally constrained fibers , 1989 .

[24]  C. Page,et al.  Steel/mortar interfaces: Microstructural features and mode of failure , 1979 .

[25]  D. Tabor,et al.  Interfacial phenomena in steel fibre reinforced cement I: Structure and strength of interfacial region☆ , 1978 .

[26]  P. Lawrence,et al.  Some theoretical considerations of fibre pull-out from an elastic matrix , 1972 .

[27]  John W. Hutchinson,et al.  Models of fiber debonding and pullout in brittle composites with friction , 1990 .

[28]  Peter Bartoš,et al.  Analysis of pull-out tests on fibres embedded in brittle matrices , 1980 .

[29]  A. Kelly.  Interface effects and the work of fracture of a fibrous composite , 1970, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[30]  C. Hsueh.  Effects of interfacial bonding on sliding phenomena during compressive loading of an embedded fibre , 1990 .

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

[32]  R C Devekey,et al.  Determining bond strength in fibre-reinforced composites , 1968 .

[33]  C. Hsueh.  Interfacial friction analysis for fibre-reinforced composites during fibre push-down (indentation) , 1990 .

[34]  C. Atkinson,et al.  The rod pull out problem, theory and experiment , 1982 .

[35]  A. Evans,et al.  Matrix fracture in fiber-reinforced ceramics , 1986 .

[36]  V. S. Gopalaratnam,et al.  Tensile Failure of Steel Fiber‐Reinforced Mortar , 1987 .

[37]  C. Hsueh.  Some considerations of evaluation of interfacial frictional stress from the indentation technique for fibre-reinforced ceramic composites , 1989 .