Results 211 to 220 of about 380,530 (246)

Lattice modeling of aggregate interlocking in concrete

International Journal of Fracture, 2012
In this paper, we study a mixed-mode fracture process using a conventional two dimensional lattice model with incorporated meso-level internal material structure. Simple elasto-brittle elements of the network are divided into three phases according to a projected grain layout. The stiffness of any element that fulfils a failure criterion is removed. As
Jan Eliáš, Henrik Stang
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The Mechanical Properties of an Interlocked Low-Porosity Aggregate

Géotechnique, 1968
Synopsis If coarse grained marble is heated to around 6OO°C the anisotropy of thermal expansion of calcite causes almost complete separation at grain boundaries. The resulting material retains its shape and consists of a mass of crystals in contact, with a porosity of about 4%, very small direct tensile strength and the mechanical analysis and ...
K. J. Rosengren, J. C. Jaeger
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Analysis of aggregate interlock behaviour at cracks in reinforced concrete

Magazine of Concrete Research, 1988
Synopsis Analytical methods have been developed for predicting the resistance provided by aggregate interlock against sliding-shear deformations at cracks in reinforced concrete. These methods are shown to be capable of predicting test results with a reasonable accuracy, and they are used for an analytical study of the influence on aggregate ...
Parviz Soroushian, Kienuwa Obaseki, Ki-Bong Choi   +2 more
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Fundamental Analysis of Aggregate Interlock

Journal of the Structural Division, 1981
A model for aggregate interlock has been developed based on the behavior of micro scale. The relation between displacements and stresses across the crack faces are defined to be a function of deformation and sliding at particle level. This relation is derived for one particle projecting from one of the crack faces with an arbitrary diameter and an ...
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Constitutive modelling of aggregate interlock in concrete

International Journal for Numerical and Analytical Methods in Geomechanics, 2002
AbstractA model for formed cracks in concrete is presented. The model can be used in isolation for existing cracks or linked with other damage or plasticity models and applied once a crack has fully formed. It can be applied directly to interface finite elements or used to control the behaviour of crack planes in more general constitutive models that ...
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Smeared crack analysis for fracture and aggregate interlock in concrete

Engineering Fracture Mechanics, 1990
Abstract An incremental-iterative procedure for the nonlinear finite element analysis of reinforced concrete structures is presented here. Solid concrete is modeled as a hypoelastic material, whilst cracked concrete (including fracture and aggregate interlock) is modeled with crack bands, according to the smeared crack approach.
Pietro G. Gambarova, Gianfranco Valente
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Load Transfer Characteristics of Aggregate Interlocking in Concrete Pavement

Journal of Transportation Engineering, 2009
This paper presents a finite-element model of a jointed concrete pavement with aggregate interlocking load transfer system. Interlocking mechanism has been modeled by a set of discrete springs. A new parameter “modulus of interlocking joint ( Kj ) ” has been introduced to represent the load transfer characteristics of the interlocked joint.
Swati Roy Maitra, K. S. Reddy, L. S. Ramachandra   +2 more
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A Constitutive Model for Aggregate Interlock Shear Based on Micromechanics

Journal of Energy Resources Technology, 1992
A new constitutive model for interface shear in concrete is presented. The composite is treated as a single-phase medium with no distinction in the strength difference between the matrix and the inclusions. The model consists of an assemblage of springs and a triangular asperity as a statistically equivalent replacement of the rough crack surfaces. The
A. Fafitis, M. P. Divakar
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Characterization of aggregate interlocking in hot mix asphalt by mechanistic performance tests

Road Materials and Pavement Design, 2021
The interlocking of aggregate is critical during compaction. Nevertheless, few mix design specifications include any specific requirements for locking points, mainly because it is difficult to dete...
Pawel Polaczyk, Yuetan Ma, Rui Xiao, Wei Hu, Xi Jiang, Baoshan Huang   +5 more
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Load Transfer through Aggregate Interlock: Crack Width, Aggregate Type and Performance

Proceedings of the International Conference on Concrete Pavements
It is well known that performance of plain jointed concrete pavements depends on aggregate interlock to transfer load from the one slab to the next. In order to quantify the relative contribution of crack width and the strength of the aggregate to the long-term performance of a plain jointed pavement, experimental sections of road were built using ...
P. J. Strauss, B. D. Perrie, L. Du Plessis, D. Rossmann   +3 more
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