Chapter
Jul 6, 2017

Modeling Nonlinear Creep of Steel Fiber Reinforced Concrete by Means of Hydro-Mechanical Coupling

Publication: Poromechanics VI

Abstract

This paper focuses on the coupling between the microcracking and shrinkage in the secondary creep of concrete in bending under a high sustained load. Based on an interaction between the cracking and the diffusion of moisture, microcracks can drive the growth of a crack in concrete at high stress level. This effect has been modeled in a simplified poromechanical model in the framework of continuum damage mechanic. The proposed model has been implemented in a discrete lattice code which uses Voronoi discretization for the conduit elements and Delaunay triangulation for the dual mechanical elements. The model has been validated against recent experimental tests on creep of fiber reinforced concretes in bending.

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Published In

Go to Poromechanics VI
Poromechanics VI
Pages: 1083 - 1090

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Published online: Jul 6, 2017

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Tho Duc Pham [email protected]
Ph.D. Candidate, Dept. of Civil Engineering, Laval Univ. Québec, QC, Canada. E-mail: [email protected]
Luca Sorelli, Ph.D. [email protected]
Dept. of Civil Engineering, Laval Univ. Québec, QC, Canada. E-mail: [email protected]
Mario Fafard, Ph.D. [email protected]
Dept. of Civil Engineering, Laval Univ. Québec, QC, Canada. E-mail: [email protected]
Peter Grassl, Ph.D. [email protected]
School of Engineering, Univ. of Glasgow, Glasgow, U.K. E-mail: [email protected]

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