| 種別 | Paper |
| 主題 | MATHEMATICAL MODELING OF DEFORMATION FOR FRESH CONCRETE IN PUMPING |
| 副題 | |
| 筆頭著者 | Nanayakkara, A |
| 連名者1 | Gunatilaka, D |
| 連名者2 | Ozawa,K |
| 連名者3 | Maekawa, K |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 10 |
| 号 | 2 |
| 先頭ページ | 819 |
| 末尾ページ | 824 |
| 年度 | 1988 |
| 要旨 | INTRODUCTION This paper reports a visual test carried out to obtain information on two phase material flow in tapered pipes and discusses the segregation process and blockage. Studying the sensitivity of viscosity to the kinematics of model concrete, the authors simulated the segregation process based on one dimensional computational model for pipe flow of fresh concrete. CONCLUSIONS l. Segregation of aggregate which leads to accumulation of aggregates in the tapered section was observed by the visual test. It was found that the paste viscosity was more sensitive to the segregation of material having rough surface than that with smooth surface. 2. Computational flow simulation considering phase-segregation was carried out. By using the concept of aggregate contact stress and segregation resistance, the numerical simulation succeeded in explaining the effect of the paste viscosity on the accumulation of particles. The authors express their gratitude to Ministry of Education of Japan for providing the financial by the Grant-in-Aid No.61850090. |
| PDFファイル名 | 010-01-1146.pdf |