پیوندهای مفید
آمار
| تعداد نشریات | 7 |
| تعداد شماره‌ها | 399 |
| تعداد مقالات | 5,389 |
| تعداد مشاهده مقاله | 5,288,016 |
| تعداد دریافت فایل اصل مقاله | 4,882,762 |
بررسی آماری مقاومت ضربهای بتن مبتنی بر پودر واکنش‌زا و بتن مبتنی بر پودر واکنش‌زای مسلح به الیاف فولادی | ||
| نشریه مهندسی عمران امیرکبیر | ||
| مقاله 9، دوره 42، شماره 3، بهمن 1389، صفحه 73-83 اصل مقاله (673.5 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/ceej.2014.202 | ||
| نویسندگان | ||
| علیرضا باقری1؛ حامد زنگانه2 | ||
| 1استادیار دانشکده مهندسی عمران دانشگاه صنعتی خواجه نصیرالدین طوسی | ||
| 2کارشناسی ارشد مهندسی عمران دانشگاه صنعتی خواجه نصیرالدین طوسی | ||
| چکیده | ||
| کاربردبتن مبتنی بر پودر واکنش‌زا به‌دلیل خواص ویژه مانند مقاومت فشاری بیش از 140 مگاپاسکال، در سازه‌های خاص مانند سازه‌های محافظ توسط محققان در حال بررسی است. در تحقیق حاضر مقاومت ضربهای بتن مبتنی بر پودر واکنش‌زا و بتن مبتنی بر پودر واکنش‌زا مسلح به الیاف فولادی با استفاده از آزمایش وزنه افتان با ضربه‌های تکراری مطابق با 544ACI بررسی و نتایج آزمایش با استفاده از روش‌های آماری تجزیه و تحلیل شده‌است. برخلاف مقاومت فشاری زیاد بتن مبتنی بر پودر واکنش‌زا، مقاومت ضربهای آن بسیار کم است. با کاربرد الیاف فولادی مقاومت ضربهای بتن مبتنی بر پودر واکنش‌زا افزایش قابل ملاحظهای مییابد. همچنین نتایج آزمون کلموگروف-اسمیرنوف مشخص می‌کند که برخلاف پراکندگی زیاد، نتایج مقاومت ضربهای بتنمبتنی بر پودر واکنش‌زا و بتن مبتنی بر پودر واکنش‌زا مسلح به الیاف فولادی که به روش وزنه افتان با ضربه های تکراری تعیین شدهاند دارای توزیع نرمال هستند. | ||
| کلیدواژه‌ها | ||
| بتن مبتنی بر پودر واکنش‌زا؛ الیاف فولادی؛ مقاومت ضربهای؛ آزمایش وزنه افتان؛ آزمون کلموگروف-اسمیرنوف | ||
| عنوان مقاله [English] | ||
| Statistical assessment of impact resistance of Reactive Powder Concrete and Steel Fiber Reinforced Reactive Powder Concrete | ||
| نویسندگان [English] | ||
| Alireza Bagheri1؛ hamed Zanganeh2 | ||
| چکیده [English] | ||
| The application of Reactive Powder Concrete for the construction of strategic structures such as shelters is under investigation by many researchers, because of their extremely high compressive strength. In this paper, the impact resistance of Reactive Powder Concrete and Steel Fiber Reinforced Reactive Powder Concrete has been studied by using the repeated drop-weight impact test, recommended by ACI Committee 544. The results have been analyzed using statistical methods. Results show that despite the very high compressive strength of Reactive Powder Concrete; its impact resistance is very low. The impact resistance of Reactive Powder Concrete is substantially increased by application of steel fibers. Kolmogorov–Smirnov test indicated that despite large variability of the results, impact resistance of Reactive Powder Concrete and Steel Fiber Reinforced Reactive Powder Concrete obtained from the repeated drop weight test had the normal distribution. | ||
| کلیدواژه‌ها [English] | ||
| Reactive Powder Concrete, Steel Fiber, Impact Strength, Drop-weight test, Kolmogorov–Smirnov test | ||
| مراجع | ||
|
[1]Cargile,O’Neil, Neeley, “Very-High-Strength Concretes for Use in Blast- and Penetration-Resistant Structures”, The AMPTIAC Quarterly, Vol.6, NO.4,pp. 61-66, 2001. [2]Bagheri, Zanganeh, “Energy Absorption of Reactive Powder Concrete (RPC) in Static and Impact Loadings”, CSCE 2007 Annual General Meeting &Conference, Yellowknife ,Northwest Territories,June 6-9, 2007. [3]Nataraja, Nagaraj, Basavaraja, “Reproportioning of steel fibre reinforced concrete mixes and their impact resistance”, Cement and Concrete Research, Vol.35,pp. 2350-2359, 2005. [4]Marar Kh., Eren Ö., Çelik T., “Relationship between impact energy and compression toughness energy of high-strength fiber-reinforced concrete”, Materials Letters, Vol.47, pp. 291-304, 2001. [5]Nataraja M.C., Dhang N., Gupta A.P., “Statistical variations in impact resistance of steel fiberreinforced concrete subjected to drop weight test”,Cement and Concrete Research, Vol.29, pp. 989–995, 1999. [6]Fanella DA, Naaman AE., “Stress-strain properties of fiber reinforced mortar in compression”, ACI Journal, Vol.82, pp. 457–483, 1985. [7]Hancox N.L., “Impact behaviour of fibre-reinforced composite materials and structures”, Edited by Reid and Zhou, CRC Press, 2000. [8]American Concrete Institute (ACI)-544.2R Committee report on Fiber Reinforced Concrete,1999. [9]Zhao, “A study on testing Techniques for Concrete- like materials under compressive impact loading”,Cement and Concrete Composites, Vol.20, pp. 293-299, 1998. [10]Song, Wu, Hwang, Sheu, “Assessment of statistical variations in impact resistance of high-strength concrete and high-strength steel fiber-reinforced concrete”, Cement and Concrete Research, Vol.35,pp. 393-399, 2005. [11]Badr, Ashour, Platten, “Statistical variations in impact resistance of polypropylene fibre-reinforced concrete”, International Journal of impact engineering, Vol.32, pp. 1907-1920, 2006. [12]Song, Hwang, Sheu, “Strength properties of nylon and polypropylene-fiber-reinforced concretes”,Cement and Concrete Research, Vol.35, pp. 1546-1550, 2005. [13]Nataraja, Nagaraj, Basavaraja, “Reproportioning of steel fibre reinforced concrete mixes and their impact resistance”, Cement and Concrete Research, Vol.35,pp. 2350-2359, 2005. [14]Bader, Ashour, “Modified ACI Drop-weight impact test for concrete”, ACI materials Journal, Vol.102,No.4, Pp.249-255, 2005. [15]Neville A. M., “Properties of Concrete”, 1995. [16]Richard P., Chyerezy M., “Composition of Reactive Powder Concretes”, Cement and Concrete Research, Vol.25, No.7, Pp.1501-1511, 1995. [17]Collepardi M. et al, “Influence of superplasticizer type on the compressive strength of Reactive powder mortars”, ACI SP 173-27, 1997. [18]Toutanji, McNeil, Bayasi, “Chloride permeability and impact resistance of Polypropylene-fiberreinforced silica fume concrete”, Cement and Concrete Research, Vol.28, No.7, pp. 961–968,1998. [19]Sheskin D.J. “Handbook of Parametric and Nonparametric Statistical Procedures”, 3rd ed,Champan Hall/CRC, 2004 [20]Song, Wu, Hwang, Sheu, “Statistical analysis of impact strength and strength reliability of steelpolypropylene hybrid fiber reinforced concrete”,Construction and Building Materials, Vol.19, pp. 1-9, 2005. [21]Kar, Mohanty, “Multistage gearbox condition monitoring using motor current signature analysis and Kolmogorov–Smirnov test”, Journal of Sound and Vibration, Vol. 290, pp.337–368, 2006. [22]Balaguru P.N., Shah S.P., “Fiber reinforced cement composites”, McGrawhill. 1992. [23]Richard P., Cheyrezy M. “Reactive Powder Concrete with high ductility and 200-800 MPa compressive strength”, ACI spring convention, SP 144-24, San Francisco, California, 1994. [24]Wittmann F.H. “Crack formation and fracture energy of normal and high-strength concrete”,Sādhanā Vol.27, Part 4, Pp. 413–423, August 2002. [25]Orgass, M.; Klug, Y., “Steel Fibre Reinforced Ultra- High Strength Concretes”, Leipzig Annual Civil Engineering Report No. 9, Pp. 233 – 244, 2004. [26]Collepardi S., Coppola L., Troli R., Collepardi M., “Mechanical properties of modified reactive powder concrete”, Proceedings of the Fifth conference on superplastizers and other chemical admixtures in concrete, ACI publication SP-173, Rome, Italy, Pp. 1-21, 1997. [27]Graybeal B.A., “Characterization of the behavior of ultra high performance conncrete”, Ph.D. Thesis,University of Maryland, United States, 2005. [28]Ma J., Orgass M., “Comparative investigations on Ultra-High Performance Concrete with and without coarse aggregates”, Leipzig Annual Civil Engineering Report No. 9, Pp. 245 – 256, 2004. | ||
|
آمار تعداد مشاهده مقاله: 3,100 تعداد دریافت فایل اصل مقاله: 2,716 |
||