| Cite this article: | 刘飞鹏.三维数值模拟在掺碱粉煤灰-水泥胶砂强度试验的应用[J].灌溉排水学报,,():-. |
| Liu Fei-peng.三维数值模拟在掺碱粉煤灰-水泥胶砂强度试验的应用[J].灌溉排水学报,,():-. |
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| Application of 3d numerical simulation in strength test of alkali fly ash - cement mortar |
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Liu Fei-peng
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China Forest and Grassland Exploration and Design Institute on Kunming
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| Abstract: |
| The early strength of cement can be increased by adding sodium hydroxide into the fly ash cement. In this test, the strength value of mortar at the age of 3D and 28d is measured, and the best content of sodium hydroxide is 5% and 6% respectively; the best content of fly ash is 10%; the highest content of fly ash is 20% and 30% respectively. Secondly, the influence of age on the development of strength is obtained by comparing the strength improvement rate of 3D age with that of 28d. At the same time, the finite element method is used to simulate the compression failure process of concrete specimen under uniaxial compression. The numerical simulation results are compared with the physical experiments, and the accuracy basically meets the requirements. The method provides a new idea for the research of concrete. |
| Key words: The numerical simulation;fly ash;Cement;Sodium hydroxide excitation agent;mortar;Strength properties |
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