| 姓名 | 張培聖(Pei-Sheng Chang) | 電子郵件信箱 | E-mail 資料不公開 | |
| 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 | 90學年第2學期 | |
| 論文名稱(中) | 混凝土裂縫修補材料之研究-環氧樹脂及聚甲基丙烯酸系樹脂 | |||
| 論文名稱(英) | Study of Repairing Materials of Concrete Crack-Epoxy and PMMA | |||
| 檔案 |
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。 |
論文使用權限 | 校內外完全公開 | |
| 論文語文/頁數 | 中文/108 | |||
| 摘要(中) | 混凝土結構物常因不良的因素，如環境、外力作用或施工不當等，會導致各種裂縫產生。當裂縫造成後，應針對混凝土破壞面進行修補，才能避免裂縫持續擴大。目前國內工程界對混凝土結構體，各種不同型態及寬度的裂縫，其修補材料之選擇及其適用性，尚未有明確的規範可供依循，以致於修補成效良莠不齊，且無法提供一個較可靠的保證。 本研究主要針對混凝土裂縫修補材料，如環氧樹脂、壓克力材料作為基材，並添加不同比例砂漿；對於不同型態結構性裂縫，與不同寬度裂縫修補的適用性，做一系統之檢驗。並利用破壞力學分析軟體FRANC2D/L，先行分析並預測裂縫面產生的位置，作為裂縫面修補效果的檢驗用。 由試驗結果得知，二種修補材料對於混凝土撓曲型及剪力型裂縫的修復指數，皆隨著含砂量提高而增加，且撓曲型裂縫的修復效果優於剪力型裂縫。另外，在相同含砂量對同寬度裂縫的修補而言，二種修補材料維修撓曲型裂縫的修復指數相似，但剪力型裂縫修復指數以壓克力材料較高。若以修補材料與混凝土的膠結性能可知，壓克力材料優於環氧樹脂材料，且增加修補面的粗糙度，可增加修復效果。 | |||
| 摘要(英) | Concrete structures
frequently exist various types of cracks due to inferior factors such as
environment, excessive loading or improper constructions. When
cracks take place, it is supposed to focus on repairing against the
damaged surfaces so as to prevent the deterioration. Currently,
there is no specific code to regulate the selections for repairing
materials and their applicability to divergent types and widths of
cracks, neither of the practical means to offer more reliable guarantee.
This research focuses on the repairing materials for concrete structures with the materials such as epoxy and acrylic based materials added with various amounts of fine sand ; Also, a dynamic finite element code for damage analysis, FRANC2D/L, is employed to predict the potential paths of the crack for the purpose of evaluating the repairing efficiency of cracked concrete. From the testing results, both repairing materials with the restoring index for the flexural crack and shearing crack, increase with the increasing amount of sand. Moreover, the restoring effect on flexural type is superior to that of shearing types of cracks. In addition, from an observation on the test of adherence between both repairing materials and concrete, the acrylic material performs superior to epoxy material, and meanwhile, increasing the roughness of mending surfaces will enhance their restoring effects accordingly. | |||
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