Concrete Shrinkage-Induced Damage Taking into Account Aggregate Restraint

Zhan Qi Guo; Gui Ming Wang; Piet Stroeven; Zhong He Shui

doi:10.4028/www.scientific.net/KEM.417-418.677

Paper Titles

Fracture Analysis for Stiffened Aircraft Fuselage Subjected to Blast
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Study on Stress and Strain Field of Mode II Quasi-Static Growing Crack in Pressure-Sensitive Dilatant Material
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Fracture Properties of PCBN as a Function of Loading Rate
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Strength Response and Failure Analysis of Ceramic Alumina Tiles
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Concrete Shrinkage-Induced Damage Taking into Account Aggregate Restraint
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Fracture Analysis for a 2D Prototype of Recycled Aggregate Concrete Using Discrete Cracking Model
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Numerical Investigation on the Structural Behavior of a Composite Impact Absorber
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Numerical Simulation on Damage and Failure of Recycled Aggregate Concrete with a Lattice Model
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The Influence of the Steel and Aluminium Components Separation at the Conductors Locking for Stress-Strain Tests
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Concrete Shrinkage-Induced Damage Taking into Account Aggregate Restraint

Abstract:

The influence of concrete meso-structure and coarse aggregate size on early age crack is studied. In this study, concrete is regarded as a three-phase material based on shrinkage property. The mortar matrix and interfacial transition zones undergo shrinkage and no spherical coarse aggregate particles are considered to restain the shrinkage by particle interaction. The results show that concrete meso-structure plays an important role in the safety of concrete, different aggregate distribution in concrete leads to different initial cracks and propagation due to shrinkage. With the increase of maximum aggregate size, the value of shrinkage deformation becomes unstable and varies in a wide range; relevant shrinkage cracking becomes easier too.