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بررسی تاثیر میزان سنگدانه‌ها بر خواص بتن خودتراکم | ||
| نشریه مهندسی عمران امیرکبیر | ||
| دوره 55، شماره 7، مهر 1402، صفحه 1419-1448 اصل مقاله (2.15 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/ceej.2023.22063.7893 | ||
| نویسندگان | ||
| سیدفتح اله ساجدی* 1؛ علیرضا دادپور2؛ رضا بصیری3 | ||
| 1گروه عمران، دانشگاه آزاد اسلامی، اهواز، ایران | ||
| 2آزمایشگاه عمران و مرکز تحقیقات بتن، دانشگاه صنعتی خاتمالانبیاء، بهبهان، ایران | ||
| 3گروه جنگلداری، دانشکده منابع طبیعی، دانشگاه صنعتی خاتمالانبیاء، بهبهان، ایران | ||
| چکیده | ||
| با وجود گذشت حدود چهار دهه از توسعه بتن خودتراکم، جایگزینی آن با بتن معمولی (بهدلیل وجود خطاهای عمدی و غیر عمدی در ساخت و اجراء) همچنان مشکلاتی در وارسی کیفیت و ساخت در ابعاد وسیع وجود دارد. این مشکلات بخشی به علت عدم شناخت کامل از خواص بتن خودتراکم و بخشی نیز به علت حساسیت شدید عملکرد این نوع بتن نسبت به تغییر پارامترهای طراحی، اقلیمی، مشخصات فیزیکی و شیمیایی اجزاء طرح مخلوط، نیاز به کارگران متخصص، عدم ارائه طرح مخلوط های مناسب و مطمئن، عدم تمایل پیمانکاران و ابقاءپذیری است. در این پژوهش برای بررسی تأثیر میزان مصالح سنگی به منظور نیل به طرح مخلوط های بهینه، اولین گام، اثبات قابل ساخت بودن بتن با مصالح بومی شهرستان بهبهان واقع در استان خوزستان در آزمایشگاه و سپس به صورت کارگاهی (بدون شستشوی مصالح سنگی) است. این مرحله با ساخت 28 طرح مخلوط به شیوه آزمون و خطا بر تمام اجزاء بتن برای ثابت نگهداشتن آنها، با انجام آزمایش‌ها در حالات تازه و سخت شده طبق استانداردهای مرتبط انجام شد. در نهایت با رسیدن بهیک طرح مخلوط مرجع، طرح مخلوط های جدید با تغییر میزان سنگدانه های ریز از %30 تا %70 با آهنگ افزایش 5 درصدی ساخته شدند. براساس نتایج و تحلیل های آماری، طرح مخلوط بهینه به صورت طرح دارای %۶۵ سنگدانه ریز نسبت به کل سنگدانه ها تعیین و معرفی می شود. | ||
| کلیدواژه‌ها | ||
| بتن خودتراکم؛ خواص بتن؛ دانه‌بندی؛ مصالح سنگی؛ تحلیل آماری | ||
| موضوعات | ||
| تکنولوژی بتن | ||
| عنوان مقاله [English] | ||
| Investigating the effect of the amount of aggregates on the properties of self-compacting concrete | ||
| نویسندگان [English] | ||
| Seyed Fathollah Sajedi1؛ Alireza Dadpour2؛ Reza Basiri3 | ||
| 1Professor, Department of Civil Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran | ||
| 2Expert in Civil Laboratory and Concrete Research Center of Khatam Al-Anbia University of Technology, Behbahan | ||
| 3Faculty of Forestry, Faculty of Natural Resources, Khatam Al-Anbia University of Technology, Behbahan | ||
| چکیده [English] | ||
| Although about four decades have passed since the development of self-compacting concrete (SCC), its replacement with ordinary concrete, there are still problems in quality control and construction in large dimensions. These problems are partly due to the lack of complete understanding of the properties of SCC and partly due to the extreme sensitivity of the performance of this type of concrete to changes in the design parameters, climate, physical and chemical characteristics of the components of the mix design, the need for expert workers, the lack of design suitable and safe mixtures are contractors' reluctance and maintainability. In this research, To investigate the effect of the number of stone materials To achieve the optimal mixture design, the first step is to prove that concrete can be made with local materials of Behbahan, located in Khuzestan province, in the laboratory and then in a site. This stage was done by making 28 mixes in a trial and error manner on all concrete components to keep them stable, concrete tests in fresh and hardened conditions were carried out according to the standards of "Federation of European National Unions of Concrete Representatives" and "Japan". Finally, after reaching a reference mix design, new mixes were made by changing the amount of fine aggregates from 30% to 70% with a rate of 5% increase. Based on the results and statistical analysis, the optimal mix design is determined and introduced as a design with 65% fine aggregates compared to the total aggregates. | ||
| کلیدواژه‌ها [English] | ||
| Self-compacting concrete (SCC), Concrete properties, Grain size distribution (GSD), Stone materials, Statistical analysis | ||
| مراجع | ||
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[1] M. Taheri Amiri, Ashrafian, A, Baranjian, J, Asghari Tilki, F, Optimizing the design of self-compacting fibrous concrete mix containing polypropylene using meta-innovative algorithms of crow search and genetics, Omran Modares, 20(3) (2019) 1-12. [2] L. Sun, M. Koopialipoor, D. Jahed Armaghani, R. Tarinejad, M. Tahir, Applying a meta-heuristic algorithm to predict and optimize compressive strength of concrete samples, Engineering with Computers, 37 (2021) 1133-1145. [3] G. Sua-Iam, N. Makul, Utilization of limestone powder to improve the properties of self-compacting concrete incorporating high volumes of untreated rice husk ash as fine aggregate, Construction and Building Materials, 38 (2013) 455-464. [4] V. Sivakumar, O. Kavitha, G.P. Arulraj, V. Srisanthi, An experimental study on combined effects of glass fiber and Metakaolin on the rheological, mechanical, and durability properties of self-compacting concrete, Applied Clay Science, 147 (2017) 123-127. [5] E. Sharifi, S.J. Sadjadi, M. Aliha, A. Moniri, Optimization of high-strength self-consolidating concrete mix design using an improved Taguchi optimization method, Construction and Building Materials, 236 (2020) 117547. [6] W. Schmidt, H. Brouwers, H.-C. Kühne, B. Meng, Effects of the characteristics of high range water reducing agents and the water to powder ratio on rheological and setting behavior of self-consolidating concrete, Advances in civil engineering materials, 3(2) (2014) 1-15. [7] P. Rougeau, J. Maillard, C. Mary-Dippe, Comparative study on properties of self-compacting and high performance concrete used in precast construction, in: Self-compacting concrete (Stockholm, 13-14 September 1999), 1999, pp. 251-261. [8] P. Qudousi, Shirzadi Javid, A., Effect of constraint on shrinkage and paste settlement of repair materials based on self-compacting concrete, Omran Modares, 10(4) (2019) 25-32. [9] P. Qudousi, Salehi, A, Investigating the maintainability of self-compacting concrete containing limestone powder based on rheological parameters, Omran Modares, 18(5) (2017) 155-163 [10] J.-Y. Petit, K.H. Khayat, E. Wirquin, Coupled effect of time and temperature on variations of plastic viscosity of highly flowable mortar, Cement and concrete research, 39(3) (2009) 165-170. [11] G. Pachideh, M. Gholhaki, A. Moshtagh, On the post-heat performance of cement mortar containing silica fume or Granulated Blast-Furnace Slag, Journal of Building Engineering, 24 (2019) 100757. [12] G. Pachideh, M. Gholhaki, H. Ketabdari, Effect of pozzolanic wastes on mechanical properties, durability and microstructure of the cementitious mortars, Journal of Building Engineering, 29 (2020) 101178. [13] G. Pachideh, M. Gholhaki, H. Ketabdari, Effect of pozzolanic wastes on mechanical properties, durability and microstructure of the cementitious mortars, Journal of Building Engineering, 29 (2020) 101178. [14] G. Pachideh, M. Gholhaki, Assessment of post-heat behavior of cement mortar incorporating silica fume and granulated blast-furnace slag, Journal of Structural Fire Engineering, (2020). [15] M. Ouchi, M. Hibino, K. Ozawa, H. Okamura, A rational mix-design method for mortar in self-compacting concrete, Structural Engineering & Construction: Tradition, Present and Future., 2 (1998) 1307-1312. [16] H. Okamura, K. Ozawa, Mix design for Self-Compacting Concrete, Concrete library of JSCE 25 (1995) 107–120, Search in. [17] D. Ogheneochuko, O. Orie, Optimization of superplasticized concrete using Taguchi approach: A case study of hydroplast 200, Nigerian Journal of Technology, 37(3) (2018) 611-618. [18] I. Nikbin, M. Beygi, M. Kazemi, J.V. Amiri, E. Rahmani, S. Rabbanifar, M. Eslami, Effect of coarse aggregate volume on fracture behavior of self compacting concrete, Construction and Building Materials, 52 (2014) 137-145. [19] A. Neville, J. Brooks, Concrete technology (the second edition), Harlow: Longman Scientific & Technical, (2010). [20] J. Muhammadi, K. Bagheri, K. Zandi, N. Nadipoor, Spatial Analysis and Ranking of Towns of Khuzestan Province In Terms of Development of ICT Indicators Using TOPSIS and AHP Techniques, Journal of Civil Engineering and Urbanism, 5(2) (2015) 69-76. [21] S. Mirvalad, A.A. Shirzadi Javid, S. Manouchehric, Investigating Durability Properties of Binary and Ternary Self-Consolidating Concrete Mixtures in Simulated Marine Environement (Persian Gulf), Journal of Concrete Structures and Materials, 4(2) (2019) 143-158. [22] M. Mazloom, H. Salehi, The relationship between fracture toughness and compressive strength of self-compacting lightweight concrete, in: IOP Conference Series: Materials Science and Engineering, IOP Publishing, 2018, pp. 062007. [23] M. Mazloom, M. Akbari Jamkarani, F. Afzali, Investigating the mechanical properties of self-compacting lightweight concrete containing copper slag, Journal of Structural and Construction Engineering, 8(9) (2021) 289-305. [24] E.P. Koehler, D.W. Fowler, ICAR mixture proportioning procedure for self-consolidating concrete, 2007. [25] G.F. Kheder, R.S. Al Jadiri, New method for proportioning self-consolidating concrete based on compressive strength requirements, ACI Materials Journal, 107(5) (2010) 490. [26] JSCE, Recommendations for self- compacting concrete, Concrete Engineering Series, Japanese Society of Civil Engineers, 1999. [27] E. Güneyisi, Y.R. Atewi, M.F. Hasan, Fresh and rheological properties of glass fiber reinforced self-compacting concrete with nanosilica and fly ash blended, Construction and Building Materials, 211 (2019) 349-362. [28] M.R. Geiker, M. Brandl, L.N. Thrane, L.F. Nielsen, On the effect of coarse aggregate fraction and shape on the rheological properties of self-compacting concrete, Cement, concrete and aggregates, 24(1) (2002) 3-6. [29] M. El-Rayyes, Remedies to rapid setting in hot-weather concreting, in: Admixtures for Concrete-Improvement of Properties: Proceedings of the International RILEM Symposium, CRC Press, 1990, pp. 137. [30] H. Diawara, N. Ghafoori, Influence of Combined Hauling Time and Temperature on Flow Properties of Self-Consolidating Concrete: Retempering Remediation, Journal of materials in civil engineering, 24(1) (2012) 1-7. [31] G. De Schutter, P. Bartos, P. Domone, J. Gibbs, S.-c. Concrete, Whittles Publishing, Caithness, Scotland, (2008). [32] S.-C. Concrete, The European guidelines for self-compacting concrete, BIBM, et al, 22 (2005) 563. [33] E. C, Specification and Guidelines for Self-compacting Concrete, European Federation of Producers and Contractors of Specialist Products for Structures, Farham, UK, 2001. [34] S.P. Boindala, V. Arunachalam, Concrete mix design optimization using a multi-objective cuckoo search algorithm, in: Soft Computing: Theories and Applications: Proceedings of SoCTA 2018, Springer, 2020, pp. 119-126. [35] M.H. Beygi, M.T. Kazemi, I.M. Nikbin, J.V. Amiri, S. Rabbanifar, E. Rahmani, The influence of coarse aggregate size and volume on the fracture behavior and brittleness of self-compacting concrete, Cement and Concrete Research, 66 (2014) 75-90. [36] B.D. Barnes, R. Orndorff, J.E. Roten, Low initial curing temperature improves the strength of concrete test cylinders, in: Journal Proceedings, 1977, pp. 612-615. [37] S. Ahmad, A. Umar, Rheological and mechanical properties of self-compacting concrete with glass and polyvinyl alcohol fibres, Journal of Building Engineering, 17 (2018) 65-74. [38] B. 1881, PART 116, Testing concrete, Method for determination of compressive strength of concrete cubes, in. [39] A.c. 237, self- consolidating concrete, American Concrete Institute, 2008. [40] ACI Committee 305.1-06, Specification for hot weather concreting, American Concrete Institute, Detroit, 2007. [41] Guidelines for Viscosity Modifying Admixtures for Concrete, EFNARC, EFCA, 2006. [42] Self-Compacting Concrete European Project Group, The European Guidelines for Self-Compacting Concrete, BIBM, CEMBUREAU, EFCA, EFNARC and ERMCO, 2005. | ||
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