The role of crack rate dependence in the long-term behaviour of cementitious materials

Evidence has been presented for the necessity to consider the crack rate dependence as an important source of time dependence next to bulk creep in a porous, cementitious material. Only by including this contribution to the cracking resistance, the observed times to failure and the crack mouth opening displacements in three-point bending creep tests of concrete beams can be computed with reasonable accuracy.

[1]  P. Feenstra.  Computational aspects of biaxial stress in plain and reinforced concrete : proefschrift , 1993 .

[2]  Zdeněk P. Bažant,et al.  Creep and Shrinkage of Concrete , 1965, Nature.

[3]  Jan G. Rots,et al.  Structural Masonry , 2020 .

[4]  P. Lourenço.  Computational strategies for masonry structures : Proefschrift , 1996 .

[5]  Wei Min Wang,et al.  Stationary and Propagative Instabilities in Metals: A Computational Point of View , 1997 .

[6]  L. J. Sluys,et al.  Wave propagation, localisation and dispersion in softening solids : proefschrift , 1992 .

[7]  Fan Ping Zhou,et al.  Time-dependent crack growth and fracture in concrete , 1992 .

[8]  G.P.A.G. van Zijl.  Computational Modelling of Masonry Creep and Shrinkage , 2000 .

[9]  Ravindra Gettu,et al.  Rate Effects and Load Relaxation in Static Fracture of Concrete , 1992 .

[10]  Nigel G. Shrive,et al.  Creep analysis of clay masonry assemblages , 1997 .

[11]  Z. Bažant,et al.  Crack band theory for fracture of concrete , 1983 .

[12]  L. J. Sluys,et al.  Computational issues in time-dependent deformation and fracture of concrete , 1993 .

[13]  H. Rusch.  Researches Toward a General Flexural Theory for Structural Concrete , 1960 .

[14]  L. J. Sluys,et al.  Some current issues in computational mechanics of concrete , 1994 .

[15]  Z. Bažant,et al.  Crack Growth and Lifetime of Concrete under Long Time Loading , 1997 .

[16]  Z. Bažant,et al.  Concrete creep at variable humidity: constitutive law and mechanism , 1985 .