| 姓名 | 陳佑松(Yu-Sung Chen) | 電子郵件信箱 | s9311620@cyut.edu.tw | |
| 畢業系所 | 營建工程系碩士班(Department and Graduate Institute of Constrction Engineering) | |||
| 畢業學位 | 碩士(Master) | 畢業時期 | 94學年第2學期 | |
| 論文名稱(中) | 活性粉混凝土補強混凝土構件在火害和凍融循環之耐久性研究 | |||
| 論文名稱(英) | Durability of Fire-Damage and Freeze-Thaw of Strengthening Concrete Members Using Reactive Powder Concrete | |||
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論文使用權限 | 校內外都兩年後公開 | |
| 論文語文/頁數 | 中文/162 | |||
| 摘要(中) | 本研究主要探討以活性粉混凝土補強混凝土構件在火害和凍融循環之耐久性研究。首先，測試活性粉混凝土之基本力學性質，其次以高溫火害及凍融循環試驗測試混凝土之耐久性能與補強成效。其中力學分析之部分將探討因鋼纖維含量的改變對活性粉混凝土之基本力學性質所造成的影響，並比較常溫養護與高溫養護因養護溫度的不同所帶來的強度差異。最後比較活性粉混凝土與各種補強材料之補強差異，並以高溫火害及凍融循環試驗測試補強後混凝土的耐久性能與補強成效。希望藉由本研究之試驗結果，在未來能有效提供建築結構維修補強的參考。 研究結果顯示，活性粉混凝土具有高強度及高韌性的力學性質。在高溫火害試驗中，發現添加鋼纖維之活性粉混凝土，由常溫到達400℃延燒1小時，會導致試體爆裂破壞。但在600次凍融循環試驗之後，其強度能力有些影響，比較活性粉混凝土在常溫與高溫養護之下，其28天抗壓強度並無差異。以添加1%鋼纖維高溫養護之活性粉混凝土為補強材料，其厚度為1.5公分可獲得良好的補強成效。以活性粉混凝土、碳纖維材料或鋼版補強混凝土構件皆可獲得良好的補強成效，但這三者之間補強成本差異相當大。 | |||
| 摘要(英) | In this study,
reactive powder concrete（RPC）was used to investigate the effect of
strengthening concrete members of durability by fire-damage test and
freeze-thaw test. In the first place, the mechanical properties of RPC
were tested. Secondly, evaluate the durability of RPC by fire-damage
test and freeze-thaw test. Their effects were evaluated and analyzed by
different curing temperatures (room temperature and high temperature),
different repair materials and methods, and RPC with different amount of
fibers. At last, the strengthening comparison of RPC and different
repair materials was evaluated by fire-damage test and freeze-thaw test.
It is expected that this studies and tests will be helpful to the
strengthening of the damaged building structures. The test results show that the mechanical properties of reactive powder concrete possess high strength and toughness. It could be detected in the fire-damage test at the temperature of 400 ℃ above and fire duration of 1 hour which cause explosion of RPC. There is small damaged influence on strength at 600 freeze-thaw cycles. The results from 28-day compressive strength show no difference, while RPCs were cured by room temperature and 90 ℃temperature. The RPC displays excellent freeze-thaw resistance. The RPC with 1.5-cm thickness on strengthening concrete members could be obtained excellent retrofit effects. Using RPC, carbon fiber reinforcement polymers （CFRP）and steel plate on strengthening concrete members could be obtain excellent retrofit effects, but their material costs are extremely different. | |||
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