THE STUDY OF REACTIVE POWDER CONCRETE BY USING HWANG-FULLER'S DENSIFIED MIXTURE DESIGN ALGORITHM
| Autor: | Chin-Hui Lee, 李金輝 |
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| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 This study is mainly applying Hwang-Fuller’s Densified Mixture Design Algorithm (HFDMDA) to reactive powder concrete (RPC) to replace traditional method. The parameters are 1) cement is included in packing; 2) cement is not included in packing but chemically balance cement and silica fume; and 3) chemically strengthening to achieve high early strength. The influences of pozzolanic material, such as fly ash and slag, of changing the paste quality, the maximum size of aggregate (Dmax), different h, curing temperature, and adding steel fiber on the property of RPC are explored. The test items include workability, compressive strength, bending strength, splitting tension, and dynamic modulus of electricity, dynamic modulus of rigidity, ultrasonic pulse velocity, electrical resistant, water absorption, drying shrinkage, chloride penetration, microstructure observation, etc. The results show by changing the mixing method can improve the workability of RPC. For hardened property, it shows the lower the water-to-binder ratio (w/b) and the higher the unit weight, the better the quality of RPC. The more the cement used the higher the early strength. The addition of steel fiber can improve the hardened property as expected. Under low w/b condition, the durability of all mixtures is similar. High temperature curing can improve early performance, but it is harmful to long-term property and durability of RPC. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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