Modelling of composite concrete block pavement systems applying a cohesive zone model

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Abstract

This paper presents a numerical analysis of the fracture behaviour of the cement bound base material in composite concrete block pavement systems, using a cohesive zone model. The functionality of the proposed model is tested on experimental and numerical investigations of beam bending tests. The pavement is modelled as a simple slab on grade structure and parameters influencing the response, such as analysis technique, geometry and material parameters are studied. Moreover, the analysis is extended to a real scale example, modelling the pavement as a three-layered structure. It is found that the cohesive model is suitable for simulation of crack propagation in cement bound materials subjected to monotonic loading. The methodology implemented gives a new understanding of the mechanical behaviour of cement bound materials which can be used in further refinements of mechanical models for composite block pavements. It is envisaged that the methodology implemented in this study can be extended and thereby contribute to the ongoing development of rational failure criteria that can replace the empirical formulas currently used in pavement engineering.
Original languageEnglish
Publication date2015
Number of pages14
Publication statusPublished - 2015
Event11th International Conference on Concrete Block Pavement - Dresden, Germany
Duration: 8 Sep 201511 Sep 2015
Conference number: 11

Conference

Conference11th International Conference on Concrete Block Pavement
Number11
CountryGermany
CityDresden
Period08/09/201511/09/2015

Keywords

  • Cement bound material fracture
  • Cohesive zone model
  • Composite block pavements
  • Pavement analysis
  • Finite element modelling

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