Mesoscopic Simulation of Failure of Mortar and Concrete by 2D RBSM

Concrete is a heterogeneous material consisting of mortar and aggregate at the meso level. Evaluation of the fracture process at this level is useful to clarify the material characteristic of concrete. However, the analytical approach at this level has not yet been sufficiently investigated. In this study, two-dimensional analyses of mortar and concrete are carried out using the Rigid Body Spring Model (RBSM). For the simulation of concrete, constitutive model at the meso scale are developed. Analysis simulates well the failure behavior and the compressive and tensile strength relationship of mortar and concrete under uniaxial and biaxial stress conditions. Localized compressive failure of concrete is also simulated qualitatively.

[1]  Tamon Ueda,et al.  NUMERICAL SIMULATION OF FRACTURE PROCESS OF CONCRETE MODEL BY RIGID BODY SPRING METHOD , 2002 .

[2]  D. J. Hannant,et al.  Discussion: The effect of aggregate concentration upon the strength and modulus of elasticity of concrete* , 1980 .

[3]  Thomas T. C. Hsu,et al.  Tensile Bond Strength Between Aggregate and Cement Paste or Mortar , 1963 .

[4]  Mitsuyasu Iwanami,et al.  FORMULATION OF STRESS-STRAIN RELATIONSHIP OF CONCRETE CONSIDERING THE LOCALIZED COMPRESSIVE FAILURE ZONE , 2003 .

[5]  Menashi D. Cohen,et al.  INFLUENCE OF AGGREGATE SURFACE AREA ON MECHANICAL PROPERTIES OF MORTAR , 1999 .

[6]  Hajime Okamura,et al.  REVALUATION OF THE EQUATION FOR SHEAR STRENGTH OF REINFORCED CONCRETE BEAMS WITHOUT WEB REINFORCEMENT , 1986 .

[7]  Kiyoshi Kato.  MICROCRACKS AND PHYSICAL PROPERTIES OF PLAIN CONCRETE , 1971 .

[8]  Tamon Ueda,et al.  Stress-Strain Model of Concrete Damaged by Freezing and Thawing Cycles , 2004 .

[9]  Gro Markeset,et al.  Softening of concrete in compression — Localization and size effects , 1995 .

[10]  Oral Buyukozturk,et al.  SIZE EFFECT AND INFLUENCE OF AGGREGATE ROUGHNESS IN INTERFACE FRACTURE OF CONCRETE COMPOSITES , 1998 .

[11]  Tadahiko Kawai,et al.  NEW ELEMENT MODELS IN DISCRETE STRUCTURAL ANALYSIS , 1977 .

[12]  P. Nepper-christensen,et al.  MODAL DETERMINATION OF THE EFFECT OF BOND BETWEEN COARSE AGGREGATE AND MORTAR ON THE COMPRESSIVE STRENGTH OF CONCRETE , 1968 .

[13]  Kurt H. Gerstle,et al.  Behavior of Concrete Under Biaxial Stresses , 1969 .

[14]  K. Terada,et al.  Meso-scopic numerical analysis of concrete structures by a modified lattice model , 2003 .

[15]  J. Mier.  Multiaxial strain-softening of concrete , 1986 .

[16]  Minoru Ueda,et al.  FRACTURE MECHANISM OF PLAIN CONCRETE UNDER UNIAXIAL TENSION , 1993 .

[17]  David Darwin,et al.  STRAIN-RATE SENSITIVE BEHAVIOR OF CEMENT PASTE AND MORTAR IN COMPRESSION , 1990 .

[18]  Michael D. Kotsovos,et al.  Effect of testing techniques on the post-ultimate behaviour of concrete in compression , 1983 .

[19]  B. Broms,et al.  Shear Bond Strength Between Coarse Aggregate and Cement Paste or Mortar , 1964 .

[20]  Yukio Aoyagi,et al.  STRENGTH AND DEFORMATION CHARACTERISTICS OF REINFORCED CONCRETE SHELL ELEMENTS SUBJECTED TO IN-PLANE FORCES , 1983 .

[21]  A. F. Stock,et al.  THE EFFECT OF AGGREGATE CONCENTRATION UPON THE STRENGTH AND MODULUS OF ELASTICITY OF CONCRETE , 1979 .

[22]  P. Cundall,et al.  A discrete numerical model for granular assemblies , 1979 .

[23]  Wai-Fah Chen.  Plasticity in reinforced concrete , 1982 .

[24]  M. Stroeven,et al.  SPACE Approach to Concrete's Space Structure and its Mechanical Properties , 2001 .

[25]  Surendra P. Shah,et al.  Softening Response of Plain Concrete in Direct Tension , 1985 .

[26]  J. Bolander,et al.  Fracture analyses using spring networks with random geometry , 1998 .