پیوندهای مفید
آمار
| تعداد نشریات | 8 |
| تعداد شماره‌ها | 422 |
| تعداد مقالات | 5,538 |
| تعداد مشاهده مقاله | 6,428,283 |
| تعداد دریافت فایل اصل مقاله | 5,515,373 |
ارزیابی تأثیر پارامترهای کلیدی طرح اختلاط بتن پودری واکنشی (RPC) بر مقاومت فشاری | ||
| نشریه مهندسی عمران امیرکبیر | ||
| مقاله 1، دوره 52، شماره 11، بهمن 1399، صفحه 2663-2676 اصل مقاله (997.96 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/ceej.2019.16047.6114 | ||
| نویسندگان | ||
| سید حلال موسوی فرد؛ محمد رئیسی* | ||
| دانشکده مهندسی عمران و مکانیک، واحد خمینی‌شهر، دانشگاه آزاد اسلامی، اصفهان، ایران | ||
| چکیده | ||
| تن پودری واکنشی نوع جدیدی از بتن‌های توانمند است که به دلیل ریزی مواد پودری و پوزولانی مورد استفاده در آن و نیز مقدار زیاد موادی که به صورت هیدرولیکی فعال هستند، به این نام شناخته می‌شود. مشخصات بتن پودری واکنشی، حساسیت زیادی به نوع و مشخصات مصالح مورد استفاده در ساخت آن دارد؛ بنابراین برای دستیابی به مشخصات فیزیکی و مکانیکی مطلوب لازم است در انتخاب مصالح و انتخاب نسبت‌های مخلوط دقت نمود. هدف از تحقیق حاضر، بررسی تأثیر نسبت آب به مواد سیمانی (W/CM)میزان مواد سیمانی(CM ،)نسبت دودهسیلیس به مواد سیمانی(SF/CM )نوع سیمان و نوع دانه‌بندی ماسه‌ی سیلیسی بر مقاومت فشاری RPC بود؛ بدین منظور 21 مخلوط بتن پودری واکنشی طراحی و ساخته شد. در هر گام از انجام این تحقیق، یکی از پارامترهای موثر بررسی شد و بر اساس نتایج بدست امده گام‌های بعدی تحقیق انجام شد. نمونه‌های ساخته شده به مدت 7 روز در آب 90 عمل‌آوری شدند. نتایج بدست m3/kg 1100 ،نسبت آب به مواد سیمانی برابر 0/2 ، آمده نشان داد که با استفاده از سیمان تیپ 5 ،مواد سیمانی به میزان نسبت دودهسیلیس به مواد سیمانی برابر 0/2 و استفاده از ماسه‌ی سیلیسی با ریزترین دانه‌بندی، می‌توان به بیشترین مقاومت فشاری دست یافت. | ||
| کلیدواژه‌ها | ||
| بتن پودری واکنشی؛ نسبت آب به مواد سیمانی؛ دودهسیلیس؛ ماسه‌ی سیلیسی؛ مقاومت فشاری | ||
| موضوعات | ||
| تکنولوژی بتن | ||
| عنوان مقاله [English] | ||
| Influence evaluation of key mix design parameters of reactive powder concrete on compressive strength | ||
| نویسندگان [English] | ||
| Sayyed Jalal Mosavi Fard؛ Mohammad Reisi | ||
| Department of Civil and Mechanical Engineering, Khomeini Shahr Branch, Islamic Azad University, Isfahan, Iran. | ||
| چکیده [English] | ||
| Reactive powder concrete (RPC) is a new type of high performance concrete (HPC) which due to using fine powder and pozzolanic materials as well as high amount of materials which are hydraulically active, is known as this name. RPC characteristics have a high sensitivity to type and characteristics of materials used in RPC; therefore, in order to achieve desired physical and mechanical properties, it is necessary to carefully consider selection of materials and mix proportions. The purpose of this research was to investigate the effect of water to ementitious materials ratio (W/CM), amount of cementitious materials (CM), silica fume to cementitious materials ratio (SF/CM), cement type and grading of silica sand on compressive strength of RPC. To do so, 21 RPC mixes were designed and made. In each step of this research, one of the effective parameters were studied and accoding to obtained results, the next steps were performed. RPC specimens were cured in 90 oC water for 7 days. Results showed that by using cement type V, cementitious materials of 1100 kg/m3, water to cementitious materials ratio equal to 0.2, silica fume to cementitious materials ratio equal to 0.2 and use of silica sand with the the finest grading, the highest compressive strength can be achieved. | ||
| کلیدواژه‌ها [English] | ||
| Reactive Powder Concrete (RPC), Water to cementitious materials ratio, Silica Fume, Compressive strength | ||
| مراجع | ||
|
[1]-P. Richard, M. Cheyrezy, Composition of reactive powder concretes, Cement and concrete research, (1995) (7)25 1511-1501. [2]-P.-C. Aitcin, B.B. Stern, High-performance concrete, E & FN Spon, London, 1998. [3]-P.-C. Aïtcin, R.J. Flatt, Science and technology of concrete admixtures, Woodhead Publishing, 2015. [4]-M. Ipek, K. Yilmaz, M. Sümer, M. Saribiyik, Effect of pre-setting pressure applied to mechanical behaviours of reactive powder concrete during setting phase, Construction and Building Materials, 68-61 (2011) (1)25. [5]-A. Cwirzen, V. Penttala, C. Vornanen, Reactive powder based concretes: Mechanical properties, durability and hybrid use with OPC, Cement and Concrete Research, 1226-1217 (2008) (10)38. [6]-S. Aydin, H. Yazici, M.Y. Yardimci, H. Yiğiter, Effect of Aggregate Type on Mechanical Properties of Reactive Powder Concrete, ACI Materials Journal, 2010) (5)107). [7]-C.M. Tam, V.W. Tam, K.M. Ng, Optimal conditions for producing reactive powder concrete, Magazine of Concrete Research, 716-701 (2010) (10)62. [8]-H. Yazıcı, M.Y. Yardımcı, S. Aydın, A.Ş. Karabulut, Mechanical properties of reactive powder concrete containing mineral admixtures under different curing regimes, Construction and Building Materials, (3)23 .)9002( 3221-1321 [9]-H. Yazıcı, The effect of curing conditions on compressive strength of ultra high strength concrete with high volume mineral admixtures, Building and environment, (5)42 .)7002( 3802-9802 [10]-D. Mostofinejad, M.R. Nikoo, S.A. Hosseini, Determination of optimized mix design and curing conditions of reactive powder concrete (RPC), Construction and Building Materials, 767-754 (2016) 123. [11]-S. Ahmad, A. Zubair, M. Maslehuddin, Effect of key mixture parameters on flow and mechanical properties of reactive powder concrete, Construction and Building Materials, 81-73 (2015) 99. [12]-M. Helmi, M.R. Hall, L.A. Stevens, S.P. Rigby, Effects of high-pressure/temperature curing on reactive powder concrete microstructure formation, Construction and Building Materials, 562-554 (2016) 105. [13]-J. Yang, B. Kong, C. Cai, J.S. Wang, Behavior of HighSpeed Railway Ballastless Track Slabs Using Reactive Powder Concrete Materials, Journal of Transportation Engineering, 04016031 (2016) (8)142. [14]-U. Mueller, N. Williams Portal, V. Chozas, M. Flansbjer, I. Larazza, N. da Silva, K. Malaga, Reactive powder concrete for facade elements–A sustainable approach, Journal of Facade Design and Engineering, 66-53 (2016) (2-1)4. [15]-G. Long, X. Wang, Y. Xie, Very-high-performance concrete with ultrafine powders, Cement and concrete research, 605-601 (2002) (4)32. [16]-J. Ma, H. Schneider, Properties of ultra-highperformance concrete, Leipzig Annual Civil Engineering Report (LACER), 32-25 (2002) 7. [17]-Y.-W. Chan, S.-H. Chu, Effect of silica fume on steel fiber bond characteristics in reactive powder concrete, Cement and concrete research, 1172-1167 (2004) (7)34. [18]-J. Kaufmann, F. Winnefeld, D. Hesselbarth, Effect of the addition of ultrafine cement and short fiber reinforcement on shrinkage, rheological and mechanical properties of Portland cement pastes, Cement and Concrete Composites, 549-541 (2004) (5)26. [19]-B.A. Graybeal, Material property characterization of ultra-high performance concrete, United States. Federal Highway Administration. Office of Infrastructure …, .6002 [20]-H. Yazıcı, H. Yiğiter, A.Ş. Karabulut, B. Baradan, Utilization of fly ash and ground granulated blast furnace slag as an alternative silica source in reactive powder concrete, Fuel, 2407-2401 (2008) (12)87. [21]-J. Liu, S. Song, L. Wang, Durability and micro-structure of reactive powder concrete, Journal of Wuhan University of Technology-Mater. Sci. Ed., 509-506 (2009) (3)24. [22]-O. Mazanec, D. Lowke, P. Schießl, Mixing of high performance concrete: effect of concrete composition and mixing intensity on mixing time, Materials and structures, 365-357 (2010) (3)43. [23]-K.M. Ng, C.M. Tam, V.W. Tam, Studying the production process and mechanical properties of reactive powder concrete: a Hong Kong study, Magazine of concrete research, 654-647 (2010) (9)62. [24]-X. Hou, S. Cao, Q. Rong, W. Zheng, G. Li, Effects of steel fiber and strain rate on the dynamic compressive stress-strain relationship in reactive powder concrete, Construction and Building Materials, 581-570 (2018) 170. [25]-H.G. Russell, B.A. Graybeal, H.G. Russell, Ultra-high performance concrete: a state-of-the-art report for the bridge community, United States. Federal Highway Administration. Office of Infrastructure …, 2013. [26]-L. Meraji, H. Afshin, K. Abedi, Investigation into the Effects of Fibers Type on the Properties of Reactive Powder Concrete, J. Civil and Env. Eng, 96-89 (2017) (44)46. [27]-M. Ipek, K. Yilmaz, M. Uysal, The effect of pre-setting pressure applied flexural strength and fracture toughness of reactive powder concrete during the setting phase, Construction and Building Materials, -459 (2012) (1)26 .564 [28]-V.G. Papadakis, Experimental investigation and theoretical modeling of silica fume activity in concrete, Cement and Concrete Research, 86-79 (1999) (1)29. [29]-H. Zanni, M. Cheyrezy, V. Maret, S. Philippot, P. Nieto, Investigation of hydration and pozzolanic reaction in reactive powder concrete (RPC) using 29Si NMR, Cement and Concrete Research, 100-93 (1996) (1)26. [30]-http://www.shahrekordcement.com, in. [31]-http://ferroazna.com, in. [32]-ASTM C1240, Standard Specification for Silica Fume Used in Cementitious Mixtures, in, 2005. [33]-http://cfs.chirookco.ir, in. [34]-P. Hiremath, S.C. Yaragal, Investigation on Mechanical Properties of Reactive Powder Concrete under Different Curing Regimes, Materials Today: Proceedings, (9)4 9762-9758 (2017). [35]-M.-z. An, L.-J. Zhang, Q.-X. Yi, Size effect on compressive strength of reactive powder concrete, Journal of China University of Mining and Technology, -279 (2008) (2)18 282. [36]-L. Coppola, R. Troli, T. Cerulli, M. Collepardi, The influence of materials on the performance of reactive powder concrete, in: Proceedings of the International Congress on High-Performance Concrete, and Performance and Quality of Concrete Structures, Florianopolis, 1996, pp. 513-502. | ||
|
آمار تعداد مشاهده مقاله: 897 تعداد دریافت فایل اصل مقاله: 1,516 |
||