Numerical Simulation of High-Strength Concrete Creep under Cyclic Load
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 8
Abstract
To study the development of high-strength concrete creep under cyclic load as well as the distribution of moisture flow velocity, pore pressure, and equivalent stress, a concrete creep model based on a porous medium was used for creep simulation. At the meso-scale, the coupling of internal aggregate, mortar, and moisture under cyclic load was simulated to obtain the creep coefficients. Additionally, the theoretical values were compared with the experimental results. A finite-element program combined with a porous media theory can simulate the motions of aggregate, mortar, and moisture in concrete at meso-scale as well as predict the development of high-strength concrete creep. As the motions of internal moisture, aggregate, and mortar accelerate under cyclic loads, the high-strength concrete creep is larger than that under a constant load. The creep simulation program can be well applied to the research of concrete creep and the engineering design of concrete materials. It has important reference to study the micromechanism of high-strength concrete creep.
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Data Availability Statement
No data, models, or code were generated or used during the study.
Acknowledgments
This work was supported by the Special Project of Scientific and Technological Innovation for Social Work and People’s Livelihood Guarantee in Chongqing City, China (cstc2017shmsA40014) and CSCEC research development program, China (CSCEC-2019-Z-11).
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 8 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Apr 16, 2019
Accepted: Jan 22, 2020
Published online: May 23, 2020
Published in print: Aug 1, 2020
Discussion open until: Oct 23, 2020
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