EFFECT OF MEMBER SIZE ON DRYING SHRINKAGE OF CONCRETE

DOI Web Site 1 Citations

Bibliographic Information

Other Title
  • 乾燥収縮ひずみに与える部材寸法の影響

Description

 Drying shrinkage of concrete is a phenomenon caused by moisture distribution of concrete. Moisture distribution of concrete causes because evaporable moisture transfers from inside to outside of concrete through the drying surface. The drying shrinkage near the drying surface is much bigger than that in the center of concrete at arbitrary drying time. However, when the ratio of the length to the thickness of concrete member is high such as a prism test specimen (100×100×400mm) or a bridge girder, the Navier hypothesis is applicable for the deformation due to drying shrinkage and the longitudinal total strain both drying shrinkage and elastic strain is consequently constant at any place in the section.<br> In general, the time-dependent strain due to drying shrinkage can be expressed by the hyperbolic equation. In other words, the time-dependent strain due to drying shrinkage with the lapse of time is expressed by two parameters, that is, the parameter for ultimate drying shrinkage strain and the parameter to express the change of strain by the lapse of time. In this study, the method to predict the drying shrinkage strain in full-scale structures by using drying shrinkage obtained by test according to JIS A 1129 test is proposed. As a result, it is shown that the parameter to express the change of strain by the lapse of time is proportional to the square of the representative member thickness.

Journal

Citations (1)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top