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Finite element modelling of interface shear strength at concrete-to-concrete bond

Interface shear strength between concrete layers cast at different times plays an important role to provide monolithic behavior of composite concrete. In this paper, a computational modeling approach is used to study the concrete-to-concrete bond behavior between two concrete layers cast at differen...

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Main Authors: Mohamad, Mazizah Ezdiani, Ibrahim, Izni Syahrizal, Abdullah, Redzuan
Format: Conference or Workshop Item
Language:English
Published: 2015
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/61811/1/RedzuanAbdullah2015_FiniteElementModellingofInterfaceShearStrength.pdf
http://eprints.utm.my/id/eprint/61811/
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spelling my.utm.618112017-07-31T03:14:35Z http://eprints.utm.my/id/eprint/61811/ Finite element modelling of interface shear strength at concrete-to-concrete bond Mohamad, Mazizah Ezdiani Ibrahim, Izni Syahrizal Abdullah, Redzuan TA Engineering (General). Civil engineering (General) Interface shear strength between concrete layers cast at different times plays an important role to provide monolithic behavior of composite concrete. In this paper, a computational modeling approach is used to study the concrete-to-concrete bond behavior between two concrete layers cast at different times; concrete base and concrete topping. The compressive strength of the concrete base is 40 N/mm2, while the concrete topping is 25 N/mm2. Finite Element Analysis (FEA) package ABAQUS 6.12 is used to model the bond interaction of concrete-to-concrete layers, which is then verified with the experimental test. Four specimens with different types of surface textures are - -brushing in transverse direction and projecting steel reinforcement crossing the interface. Failure of the bonded interfaces is modeled with cohesive zone model (CZM) approach with zero thickness interface element where the governing parameters are - meanwhile, the projecting steel surface is modeled with Modified Drucker-Prager/Cap-Plasticity Model (CPM) approach with 1 mm thickness of interface element. The parameters used in the analysis include interface shear strength, fracture energy and elastic shear stiffness for CZM approach. The CPM parameters for modeling projecting steel surface are cohesion, interface friction angle, cap eccentricity parameter, initial cap yield surface position, flow stress ratio, yield stress at interface. The study shows that the difference between the modeled and experimental results is relatively small and therefore shows the capability of the finite element analysis to carry out interface analysis. 2015 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/61811/1/RedzuanAbdullah2015_FiniteElementModellingofInterfaceShearStrength.pdf Mohamad, Mazizah Ezdiani and Ibrahim, Izni Syahrizal and Abdullah, Redzuan (2015) Finite element modelling of interface shear strength at concrete-to-concrete bond. In: 9th Asia Pacific Structural Engineering and Construction Conference (APSEC) & 8th Asean Civil Engineering Conference (ACEC), 3-5 Nov, 2015, Kuala Lumpur, Malaysia.
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Mohamad, Mazizah Ezdiani
Ibrahim, Izni Syahrizal
Abdullah, Redzuan
Finite element modelling of interface shear strength at concrete-to-concrete bond
description Interface shear strength between concrete layers cast at different times plays an important role to provide monolithic behavior of composite concrete. In this paper, a computational modeling approach is used to study the concrete-to-concrete bond behavior between two concrete layers cast at different times; concrete base and concrete topping. The compressive strength of the concrete base is 40 N/mm2, while the concrete topping is 25 N/mm2. Finite Element Analysis (FEA) package ABAQUS 6.12 is used to model the bond interaction of concrete-to-concrete layers, which is then verified with the experimental test. Four specimens with different types of surface textures are - -brushing in transverse direction and projecting steel reinforcement crossing the interface. Failure of the bonded interfaces is modeled with cohesive zone model (CZM) approach with zero thickness interface element where the governing parameters are - meanwhile, the projecting steel surface is modeled with Modified Drucker-Prager/Cap-Plasticity Model (CPM) approach with 1 mm thickness of interface element. The parameters used in the analysis include interface shear strength, fracture energy and elastic shear stiffness for CZM approach. The CPM parameters for modeling projecting steel surface are cohesion, interface friction angle, cap eccentricity parameter, initial cap yield surface position, flow stress ratio, yield stress at interface. The study shows that the difference between the modeled and experimental results is relatively small and therefore shows the capability of the finite element analysis to carry out interface analysis.
format Conference or Workshop Item
author Mohamad, Mazizah Ezdiani
Ibrahim, Izni Syahrizal
Abdullah, Redzuan
author_facet Mohamad, Mazizah Ezdiani
Ibrahim, Izni Syahrizal
Abdullah, Redzuan
author_sort Mohamad, Mazizah Ezdiani
title Finite element modelling of interface shear strength at concrete-to-concrete bond
title_short Finite element modelling of interface shear strength at concrete-to-concrete bond
title_full Finite element modelling of interface shear strength at concrete-to-concrete bond
title_fullStr Finite element modelling of interface shear strength at concrete-to-concrete bond
title_full_unstemmed Finite element modelling of interface shear strength at concrete-to-concrete bond
title_sort finite element modelling of interface shear strength at concrete-to-concrete bond
publishDate 2015
url http://eprints.utm.my/id/eprint/61811/1/RedzuanAbdullah2015_FiniteElementModellingofInterfaceShearStrength.pdf
http://eprints.utm.my/id/eprint/61811/
_version_ 1643655268982063104
score 13.211869

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