研究生: |
張建鴻 Chien-hung Chang |
---|---|
論文名稱: |
高纖維因子的鋼纖維混凝土軸壓行為 Compressive behavior of high fiber-reinforcing steel fiber reinforced concrete |
指導教授: |
歐昱辰
Yu-Chen Ou |
口試委員: |
邱建國
Chien-Kuo Chiu 陳君弢 Chun-Tao Chen |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2010 |
畢業學年度: | 98 |
語文別: | 中文 |
論文頁數: | 115 |
中文關鍵詞: | 鋼纖維混凝土 、自充填混凝土 、彎鉤型纖維 、鋼纖維長度 、鋼纖維細長比 、應力應變曲線圖 、韌性 |
外文關鍵詞: | Steel fiber reinforced concrete, self-consolidating concrete, hooked-end fiber, fiber length, fiber aspect ratio, stress-strain curves, toughness |
相關次數: | 點閱:462 下載:3 |
分享至: |
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
在標準的圓柱試體抗壓試驗下,探討鋼纖維混凝土(SFRC)的應力應變行為。本試驗採用彎鉤型鋼纖維,其中包含了不同的長度和長細比,RI值的範圍為0.4到1.7。從其他文獻和本試驗所得出的結果,消能比韌性比還要能夠去表示鋼纖維混凝土的韌性,且長的鋼纖維和比較小的長細比擁有比較好的能力,像是增加壓力強度所對應的應變和改善鋼纖維混凝土的韌性,體積比從試驗中得出大約上限為2%。最後從試驗的資料可以推出一套分析模型,此分析模型建議了鋼纖維混凝土的應力應變模型和韌性,從其他文獻提出的分析模型和本試驗做比較,最明顯的不同為下降段的走向。最後利用本試驗提出的分析模型去模擬國外文獻提出的SFRC柱承受軸壓下的應力應變行為,分別從壓力強度、對應的應變和彈性模數去做比較,探討分析和試驗的結果是否相近。
Compression tests of cylinder specimens carried out to characterize the compressive stress-strain behavior of steel fiber reinforced concrete (SFRC) are reported. Hooked-end fibers with different lengths and aspect ratios were considered. The reinforcing index in terms of volume fraction of fibers ranged from 0.4 to 1.7. Test results from this research and from other studies indicate that toughness index is a more appropriate quantity than toughness ratio in evaluating the toughness of SFRC. Steel fibers of a longer length and a smaller aspect ratio have a better performance in increasing the strain at the compressive strength and in improving the toughness of SFRC. A higher amount of steel fibers lead to a better performance up to 2% volume fraction. Based on the test results, analytical models for the compressive stress-strain curve and toughness of SFRC are proposed. Significant difference is found between the descending branches of the stress-strain curves predicted by the proposed model and by models developed by other researchers.
[1] Bentur A, Mindess S, Fiber reinforced cementitious composites. UK:Elsevier, 1990.
[2] Carreira D. J, Chu K. H. (1985). “Stress-strain relationship for plain concrete in compression,” ACI Journal, 82(6), 797-804.
[3] Ezeldin, A. S., and Balaguru, P. N. (1992). “Normal- and high-strength fiber reinforced concrete under compression.” Journal of Materials in Civil Engineering, 4(4), 415–429.
[4] Barros, J. A. O., and Figueiras, J. A. (1999). “Flexural behavior of SFRC: Testing and modeling.” J. Mater. Civ. Eng., 11(4), pp.331–339.
[5] Fanella, D. A., and Naaman, A. E. (1985). “Stress-strain properties of fiber reinforced mortar in compression.” ACI J., 82(4), pp.475–483.
[6] Hsu, L. S., and Hsu, C.-T. T. (1994). “Stress-strain behavior of steel-fiber high-strength concrete under compression.” ACI Structural Journal, 91(4), 448–457.
[7] Nataraja, M. C., Dhang, N., and Gupta, A. P. (1999). “Stress strain curve for steel-fiber reinforced concrete under compression.” Cement and concrete composites, 21, 383–390.
[8] Bhargava, P., Sharma, U. K., Kaushik, S. K. (2006). “Compressive stress-strain behavior of small scale steel fibre reinforced high strength concrete cylinders.” Journal of advanced concrete technology, 4(1), 109-121.
[9] Mansur, M. A., Chin, M. S., and Wee, T. H. (1999). “Stress-strain relationship of high-strength fiber concrete in compression.” Journal of Materials in Civil Engineering, 11(1), 21–29.
[10] Bencardino, F., Rizzuti, L, Spadea, G., and Swamy R. N. (2008). “Stress-strain behavior of steel fiber-reinforced concrete in compression.” Journal of Materials in Civil Engineering, 20(3), 255–263.
[11] 周浩生,「骨材粒徑對高流動性能鋼纖維混凝土性質影響之研究」,碩士論文,國立台灣大學土木工程學研究所,民國 86 年。
[12] ASTM C39/39M (2003), “Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens,” ASTM International, West Conshohocken, PA, USA.
[13] ASTM C496/496M (2004), “Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens,” ASTM International, West Conshohocken, PA, USA.
[14] ASTM C469 (2002). “Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression,” ASTM International, West Conshohocken, PA, USA.
[15] Otter, D., and Naaman, A. E. (1988). “Properties of steel fiber reinforced concrete under cyclic loading,” ACI Materials Journal, Vol. 85, No. 4, July-Aug. 1988. pp. 254-261.
[16] 歐昱辰,「自充填混凝土配比及早期行為之研究」,碩士論文,國立台灣大學土木工程學研究所,民國 90 年。
[17] Aoude, H., Cook, W. D., and Mitchell, D (2009). “Behavior of columns constructed with fibers and self-consolidating concrete” ACI Structural Journal, Vol. 106, No. 3, May-June. 2009.