Journal ArticleDOI
Crack propagation in concrete under compression
TLDR
In this article, mixedmode crack initiation and propagation starting from the aggregatematrix interface in concrete under uniaxial compression was investigated using fracture mechanics approach, finite element mode.Abstract:
Mixedmode crack initiation and propagation starting from the aggregatematrix interface in concrete under uniaxial compression was investigated using fracture mechanics approach, finite element mode...read more
Citations
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Journal ArticleDOI
Numerical modeling of fracture coalescence in a model rock material
TL;DR: In this article, a new stress-based crack initiation criterion is incorporated in FROCK, a Hybridized Indirect Boundary Element method first developed by Chan et al. The new initiation criterion requires only three material properties: σcrit, the critical strength of the material in tension; τcrit, critical strength in shear; r0, the size of the plastic zone.
Journal ArticleDOI
Evaluation of strains at peak stresses in concrete: A three-phase composite model approach
Mehmet Ali Tasdemir,Canan Tasdemir,Serap Akyüz,Anthony Duncan Jefferson,F.D. Lydon,B.I.G. Barr +5 more
TL;DR: In this paper, a wide range of concretes was evaluated to determine the influences of constituents on the stress distributions at the matrix-aggregate interface, around the aggregate and in the matrix close to the aggregate.
Journal ArticleDOI
Mechanical properties and fracture evolution of sandstone specimens containing different inclusions under uniaxial compression
TL;DR: In this paper, a series of uniaxial compression tests were conducted on prismatic sandstone containing a prefabricated hole filled with different types of inclusions using a servo-hydraulic machine.
Journal ArticleDOI
Experimental study of the cracking behavior of specimens containing inclusions (under uniaxial compression)
TL;DR: In this paper, the results of an experimental investigation on the cracking behavior of brittle heterogeneous materials were presented, focusing on crack coalescence processes associated with specimens containing an inclusion pair, as this was the primary objective of the research.
Journal ArticleDOI
Effects of silica fume and aggregate size on the brittleness of concrete
TL;DR: In this paper, the effects of silica fume and aggregate size on the softening response and brittleness of high strength concretes were investigated by measuring the fracture energy GF, the characteristic length lch and BRittleness index B.
References
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Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements
TL;DR: In this article, fracture mechanics is introduced into finite element analysis by means of a model where stresses are assumed to act across a crack as long as it is narrowly opened, which may be regarded as a way of expressing the energy adsorption in the energy balance approach.
Journal ArticleDOI
Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements
TL;DR: In this article, fracture mechanics is introduced into finite element analysis by means of a model where stresses are assumed to act across a crack as long as it is narrowly opened, which may be regarded as a way of expressing the energy adsorption in the energy balance approach.
Journal ArticleDOI
On the Crack Extension in Plates Under Plane Loading and Transverse Shear
Fazil Erdogan,G.C. Sih +1 more
Journal ArticleDOI
Crack band theory for fracture of concrete
Zdeněk P. Bažant,Byung H. Oh +1 more
TL;DR: In this article, a fracture theory for a heterogenous aggregate material which exhibits a gradual strain-softening due to microcracking and contains aggregate pieces that are not necessarily small compared to structural dimensions is developed.
Journal ArticleDOI
Strain-energy-density factor applied to mixed mode crack problems
TL;DR: In this paper, the authors investigated the general problem of crack extension in a combined stress field where a crack can grow in any arbitrary direction with reference to its original position, and showed that the direction of crack growth and fracture toughness for the mixed problem of Mode I and Mode II are governed by the critical value of the strain-energy-density factor.