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碩士論文公告區 |
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| 年度： | 90 | |
| 姓名： | 林延宗(Yen-Tsung Lin) | |
| 論文題目(中)： | 碳纖維貼片補強混凝土構件之耐久性能測試研究 | |
| 論文題目(英)： | The Testing Study for Durability of CFRP Sheets on Strengthening Concrete Members | |
| 摘要(中)： | ||
| 結構物的補強是今日國內外土木工程界的重要課題。碳纖維貼片補強工法是當前補強方法的新趨勢。碳纖維複合材料，對土木工程師而言，是一種完全嶄新的材料，具有高強度和高勁度對重量比、良好之抵抗疲勞與電學的能力、單方向高拉力、施工簡易等優點，應用在土木結構上，具有相當大的潛力。釵h的研究指出碳纖維複合材料能使用在維修與補強混凝土結構，然而，在其耐久性方面的研究卻是相當缺乏。碳纖維材料能成扑礂@混凝土維修與補強的材料，耐久性是決定性的因素。 本研究探討碳纖維補強混凝土構件之耐久性。為了確認其耐久性，將混凝土試體貼覆碳纖維貼片，放置於戶外環境、人工海水環境、紫外線環境與紫外線＋人工海水循環加速環境測試後，進行抗壓試驗、抗彎試驗、黏結強度試驗與表面硬度值檢測，利用上述環境情況與試驗結果來評估碳纖維補強混凝土構件之耐久性。 由試驗結果得知，混凝土試體貼覆碳纖維貼片能增加抗壓與撓曲能力及延展性。經過四種環境測試後，補強後的混凝土試體其抗壓強度與撓曲能力都沒有大幅度的減少，所有的測試環境皆未造成碳纖維補強系統與混凝土之膠結界面破壞。 |
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| 摘要(英)： | ||
| Retrofit and repair of RC structures has been an important issue in civil engineering nowadays. The implementation of structural strengthening with CFRP sheets is a new trend in the world. For civil engineers, carbon fiber reinforcement polymers (CFRP) is a kind of new material. Due to their high strength-to-weigh and stiffness-to-weigh ratio; fatigue and electricity resistance; high pull strength in one direction; ease of handling; and ease of fabrication, there is a lot of potential in the application of civil engineering. Extensive research has been carried out on using CFRP composites for repair and strengthening; however, information about their durability is still lacking. The long-term durability of CFRP composites is a crucial factor in successful application as repair materials or as reinforcement for concrete. In this study, CFRP is used to investigate the durability on strengthening concrete members. In order to assure the effect of strengthening material, CFRP wrapped specimens which would subject to different environment including outdoor, seawater, ultraviolet (UV), ultraviolet and seawater accelerating test exposures were tested on compressive strength, flexural strength, bond strength and surface hardness tests. The study on the durability for strengthening of concrete specimens would be used the above environment conditions and tests to evaluate. From the testing results, concrete specimens which wrapped CFRP sheets improve on compressive strength, flexural strength and ductility. After four environment test exposures, there is no big reduction in compressive and flexural strength. All environment tests didn’t break the bond between the CFRP reinforcement system and the concrete. |
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| 檔案： | 沒有相關檔案 | |
| 相關連結： | http://ethesys.lib.cyut.edu.tw/ETD-db/ETD-search-c/view_etd?URN=etd-0731102-094751 | |