CONCRETE LIBRARY OF JSCE NO. 27, JUNE 1996
ANALYSIS OF THE DRYING SHRINKAGE BEHAVIOR OF CONCRETE
USING A MICROMECHANICAL MODEL
BASED ON THE MICROPORE STRUCTURE OF CONCRETE
Translation from proceedings of the JSCE,
No.514/V-27, May 1995 and No.520/V-28, August 1995
Takumi SHIMOMURA
Koichi MAEKAWA
A micromechanical model for the moisture diffusion within concrete and the associated shrinkage
of concrete is presented in this paper. The model is based on the micropore structure of the
concrete and the thermodynamic behavior of the water in the pores. Drying shrinkage behavior,
both time-dependent moisture loss and volumetric change, of mortar and concrete specimens are
analyzed under various conditions. The suitability and applicability of the proposed model are
discussed based on the results.
Keywords : drying shrinkage, moisture transport, pore size distribution, micromechanism
Takumi Shimomura is an Associate Professor in the Department of Civil and Environmental
Engineering at Nagaoka University of Technology, Niigata, Japan. He obtained his Doctor of
Engineering degree from the University of Tokyo in 1993. His research interests include the
mechanism of creep and the shrinkage of concrete, and the transport phenomena in concrete. He
is a member of the JSCE, the JCI and the RILEM.
Koichi Maekawa is a Professor in the Department of Civil Engineering at the University of
Tokyo. He has a doctorate degree in engineering. His research interests include the nonlinear
analysis of dynamic behavior of concrete structures, and the numerical simulation of every timedependent behavior of concrete. He is a member of the JSCE and the JCI.
—l21—