| 種別 | paper |
| 主題 | Deformational Model for Solid Phase in Fresh Concrete under Compression (Single Materials) |
| 副題 | |
| 筆頭著者 | Soｍnuk TANGTERMSIRIKUL （University of Tokyo） |
| 連名者1 | Kohichi MAEKAWA （University of Tokyo） |
| 連名者2 | |
| 連名者3 | |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 11 |
| 号 | 2 |
| 先頭ページ | 679 |
| 末尾ページ | 684 |
| 年度 | 1989 |
| 要旨 | INTRODUCTION At present there are many well-studied constitutive models for predicting deformational behavior of hardened concrete. With the use of these models,the deformational behavior of hardened concrete structures can be predicted. In the aspect of fresh concrete,one rational method is to treat fresh concrete as a multi-phase material. Analysis of dynamics of water in fresh concrete under compression is one of the example which treats fresh concrete as multi-phase material. To predict the deformational and water-segregation behavior of fresh concrete as multi-phase material, the deformational models of every phase are essential especially for the complicated solid phase. Hence the idea for two-dimensional model for predicting the deformation of solid phase which is the mixture of aggregates and,cementiteous material was proposed by the authors. In this paper, the idea for single materials,which are coarse aggregate,fine aggregate and powder materials separately,is proposed and that of the mixtures will be proposed following this paper. Various parameters indicating physical properties of the particles are considered. Lateral stress coefficient was derived for the case of uni-axial confined compression. Uni-axial confined compression tests of dry materials were performed to illustrate the applicability. CONCLUSIONS Conclusions can be made on the basis of the proposed model as:1)A 2-dimensional constitutive model for single materials considering various parameters indicating physical properties of particles was proposed. The model can be applied to predict the stress-strain behavior of the single materials.2)Inter-particle friction of the materials can be derived from the lateral stress coefficient.3)The material constants are required in order to make the model more practical. |
| PDFファイル名 | 011-01-2114.pdf |