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題名 | 以賓漢模式探討新拌高性能混凝土之工作性=Investigating the Workability of Fresh High Performance Concrete Using Bingham Model |
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作者 | 湯兆緯; 顏聰; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 15:3 2003.09[民92.09] |
頁次 | 頁437-446 |
分類號 | 440.327 |
關鍵詞 | 高性能混凝土; 工作性; 坍流度試驗; 質流試驗; High-performance concrete; Workability; Slump-flow test; Rheological test; |
語文 | 中文(Chinese) |
中文摘要 | 新拌混凝土的工作性,目前最常採用坍度試驗法做為評估標準;這種試驗法用以評估高性能混凝土 (HPC) 的工作性時,有不甚理想之嫌,實有研發新試驗方法之必要。在學理上,混凝土工作性的量測須具有物理意義且可量化成流動參數,以為評估質流性質的依據。準此,本文利用自行研發的質流測儀,以量測HPC的質流參數,並將坍流度試驗、箱型試驗、V型漏斗試驗及質流試驗等結果做一比較。試驗結果顯示,藉由賓漢模式可適切詮釋膠結材料混合比例、砂率、粗骨材含量對HPC質流性質的影響。 |
英文摘要 | The workability of high performance concrete (HPC) is nowadays mainly measured using conventional test methods such as the slump test. However, these single-point tests do not seem sensitive enough to characterize the high-workability of HPC. Therefore, there is an urgent need to take a more basic and reliable approach to the testing and specification of the workability of this new generation of materials. Theoretically, the parameters of a test method in measuring the workability of concrete should have physical properties, and can be quantitatively determined. In the study, the rheological parameters of fresh HPC were calculated from the rheological measurement of the authors' design. Besides, a parallel slump test, slump-flow test, U-test and V-funnel test were also carried out for comparison. The test result shows that the effects of materials and proportioning on the rheological properties of HPC can be well interpreted by the Bingham model. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。