| URN | etd-0715119-220501 | Statistics | This thesis had been viewed 150 times. Download 3 times. |
| Author | Po-hsiang Wang | ||
| Author's Email Address | No Public. | ||
| Department | Department of construction & spatial design | ||
| Year | 2018 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 66 |
| Title | The Study Bending strength of Recycled Concrete Adding Glass Fiber in Broken Cranes | ||
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| Abstract | Taiwan is an island-type country. It relies on the construction of airport economic exchanges. It needs to be managed by means of short-term observation, medium-range maintenance and long-distance refurbishment to achieve safe operation. The operation of the domestic airport has gradually reached the long-term renovation stage. In response to the Administration's Building and Construction Department to reduce the consumption of resources, the relevant provisions for the construction of waste recycling have been clearly defined. For the steel pavement such as the apron, the pavement is made of flexural concrete and a large amount of coarse aggregate is added, but the natural coarse bone of Taiwan's rivers. When the materials are insufficient, the cost of repairing the pavement will increase, resulting in imperfect airport facilities and serious impact on Fei'an. Therefore, this study uses the existing broken plates to make recycled coarse aggregates and replace them to meet the policy of resource reuse. The main purpose of this study is to use the remaining materials of the broken plate retained by the apron renovation, and refer to the design specifications of the apron facility issued by the Civil Aviation Administration Airport. The design is to explore the crushing plate of the airport by recycling, washing and high temperature drying. The steps of drying and sieving are used to regenerate the coarse aggregate of the flexural concrete in this study. The purpose is to strengthen the strength ratio and design of the airport apron. In addition, the study adds two sizes of 6.4mm and 13mm. The glass fiber is added in a ratio of 0.1% and 0.2%, and is mixed with fine aggregate, water and cement to prepare a 15cm*15cm*53cm test piece and subjected to a bending test. After two consecutive experiments, the crushing is performed. After re-reproduction, simulate the multiple recycling and reuse status and obtain experimental data to analyze the results. The data shows that the flexural strength of the primary concrete is 41.9kgf/cm2, and the flexural strength obtained after adding the glass fiber falls between 46.5kgf/cm2 and 51.7kgf/cm2, which improves the flexural strength and the bending strength of the runway pavement. The strength of 45.5kgf/cm2 is similar, which also proves that the internal ductility of the test body is improved. However, if the secondary fiberglass concrete is regenerated, the obtained bending strength is added with or without glass fiber, and the average value is lower than the design strength of the runway pavement. The design strength is 45.5 kgf/ Cm2; The reason for this is that we have reviewed the water absorption rate of the secondary regenerated coarse aggregates and increased the water content due to the addition of glass fiber, resulting in a significant decrease in the flexural strength. In this experiment, the water-cement ratio will be controlled at 0.47. The first recycled glass fiber concrete is maintained above the target flexural strength; however, if the same water-cement ratio of 0.47 is used in the second regeneration of fiberglass concrete, the flexural strength of the concrete will be greatly affected, so the ratio design and Water consumption control is extremely important. |
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| Files | indicate access worldwide | ||
| Date of Defense | 2019-06-21 | Date of Submission | 2019-07-15 |