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碩士論文公告區 |
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| 年度： | 90 | |
| 姓名： | 李悅瑞(Yueh-Jui Lee) | |
| 論文題目(中)： | 以敲擊回音法估計水工結構物混凝土強度之可行性研究 | |
| 論文題目(英)： | Feasibility of Using Impact-Echo Method as a Measure of Concrete Compressive Strength in Water Resource Engineering | |
| 摘要(中)： | ||
| 本論文主要目的係利用於1998年正式納入ASTM C1383規範，之敲擊回音法( Impact-echo method )中量測波速技術，探討利用波速來評估水工結構混凝土抗壓強度的可行性。目前國內之水工結構混凝土，因需考量水工結構混凝土之施工性、養護條件、受水之衝擊性及耐久性等因素，而提高其水泥漿體之強度，使水工混凝土結構物之物理性質更接近複合材料，將所受應力能有效分散傳遞至該結構體之各部位。並藉此尋求應力波速與水工混凝土結構物之關係曲線。本研究經以施工中之水利工程「集集共同引水計畫—斗六大圳進水口更新改善工程」，利用其三種配比混凝土進行研究實驗室與現場之相關試驗，在較高強度結果顯示其抗壓強度與應力波速之關係呈現良好且頗為一致之趨勢關係。經回歸現場量測之波速推估其平均強度，其誤差率在1﹪以內，證實以敲擊回音法之波速檢測技術來推估水工混凝土結構物之抗壓強度為一具可行性之方法。 | ||
| 摘要(英)： | ||
| The purpose of this study is to explore the feasibility of using the P-wave measuring technique of impact-echo method, which was officially brought into the ASTM C1383 standard, to estimate the compressive strength of concrete on site. Considering the workability, curing condition, and durability for the water pounding, the strength of the mortar is usually increased for the structures in water resource engineering. Three kinds of proportion were used for finding the relations between the lab and the field results. It was found, regardless the difference in concrete mixtures, the relation of compressive strength and P-wave speed is closely related for the high-strength concrete with compressive strength larger than 300 kg/cm2. Inconsistent relation of P-wave speed and compressive strength was found for one set of lab specimens with low compressive strength. The average strength of concrete calculated from the regression curve in this study is only 1% in error from the average strength produced by core tests for each of the concrete mixture. Thus, the method was proved to be feasible. | ||
| 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-0827102-123332 | |