مصالح و سازه های بتنی

مصالح و سازه های بتنی

بررسی تاثیر جایگزینی پودر توف‎‌سبز‌البرز به جای پودر کوارتز بر روی مشخصات مکانیکی بتن‌پودری‌واکنشی جهت افزایش ظرفیت مصالح ساختمانی

نوع مقاله : مقاله پژوهشی

نویسندگان
زهرا پزشکی 1
بهمن شروانی تبار 2
1 کارشناس‌ارشد، گروه مهندسی عمران، دانشکده فنی و مهندسی، دانشگاه شهید مدنی آذربایجان ، تبریز، ایران
2 استادیار،گروه عمران، دانشکده فنی و مهندسی، دانشگاه شهید مدنی آذربایجان، تبریز، ایران،
10.30478/jcsm.2025.490580.1382
چکیده
هزینه زیاد تولید بتن‌پودری‌واکنشی یکی از چالش‌های اصلی در استفاده گسترده از این نوع بتن است. در این مطالعه، جهت افزایش ظرفیت منابع تولید بتن و کاهش هزینه تولید بتن، تأثیر جایگزینی پودر توف‌سبز‌البرز به جای پودر کوارتز در بتن‌پودری‌واکنشی بر مقاومت فشاری، مقاومت کششی، روانی و جذب آب بررسی شده‌است. ابتدا، یک طرح مخلوط مناسب به‌عنوان بتن شاهد با تکیه بر پیشینه تحقیقات و آزمون‌وخطا تعیین گردیده‌است. سپس شش طرح مخلوط با درصدهای جایگزینی پودر توف‌سبزالبرز به جای پودر کوارتز مختلف از 20 تا 100 درصد ساخته گردیده‌است. عمل‌آوری آزمونه‌ها در داخل آب با دمای °C25 صورت گرفته‌است تا نتایج برای بتن‌ریزی درجا نیز قابل استفاده باشد. نتایج نشان داده‌است که آزمونه‌های دارای 100٪ جایگزینی در سن 28 روزه، مقاومت فشاری برابر 27/72 مگاپاسکال داشته‌اند که نسبت به بتن شاهد 6/4% کاهش داشته اما همچنان در محدوده مطلوب برای کاربردهای سازه‌ای هستند. مقاومت کششی با افزایش درصد جایگزینی افزایش یافته‌است. این امر به دلیل ماهیت توف‌سبز است که علاوه بر نقش پرکنندگی، بخشی از ذرات آن به‌عنوان یک پوزولان ضعیف در واکنش‌های پوزولانی شرکت کرده و موجب افزایش خمیر چسباننده و درنتیجه افزایش مقاومت کششی شده‌اند. در مقابل مقاومت فشاری بتن علاوه بر خمیر چسباننده، به سختی دانه‌های پرکننده نیز وابسته است؛ بنابراین افزایش میزان خمیر چسباننده نتوانسته کاهش مقاومت ناشی از کم‌تر بودن سختیِ دانه‌های توف‌سبز نسبت به کوارتز را جبران کند و در نهایت مقاومت فشاری کاهش یافته‌است. همچنین، با افزایش میزان جایگزینی، روانی بتن افزایش یافته‌است که علت آن آب سطحی بیش‌تر ذرات توف‌سبز نسبت به ذرات پودر کوارتز است. جذب آب طی عمل‌آوری آزمونه‌ها با افزایش سن تغییر چندانی نداشت که نشان‌دهنده مشارکت آب سطحی ذرات پودر توف‌سبز در فرآیند هیدراتاسیون است.
کلیدواژه‌ها
بتن‌پودری‌واکنشی
پودر توف‌سبز‌البرز
مقاومت‌ فشاری
جذب آب
مقاومت کششی

موضوعات

عنوان مقاله English

Investigating The Effect of Replacing Quartz Powder with Alborz Green Tuff Powder on The Mechanical Properties of Reactive Powder Concrete In Order to Increase the Capacity of Building Materials

نویسندگان English

Zahra Pezeshki 1
Bahman Shervani Tabar 2
1 M.Sc., Department of Civil Engineering, Faculty of Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran.
2 Assistant Professor, Department of Civil Engineering, Faculty of Engineering ,Azerbaijan Shahid Madani University, Tabriz, Iran,
چکیده English

The high production cost of Reactive Powder Concrete (RPC) has been one of the main challenges limiting its widespread application. This study has investigated the effects of replacing quartz powder with green tuff powder from the Alborz region in RPC, with the aim of increasing resource availability and reducing the final cost of production. The impact of this substitution on compressive strength, tensile strength, consistency, and water absorption has been evaluated. Initially, a suitable reference mix has been developed based on previous research and trial-and-error procedures. Subsequently, six concrete mixes have been prepared with green tuff powder replacing quartz powder at various proportions, ranging from 20% to 100%. Curing has been carried out in water at 25°C so that the results can also be used for in-situ concrete. The results have indicated that the mix with 100% replacement has achieved a 28-day compressive strength of 72.27 MPa, which has represented a 4.6% decrease compared to the reference mix, yet has remained within the acceptable range for structural applications. Tensile strength has increased with higher replacement levels. This improvement has been attributed to the dual role of green tuff powder, which not only acts as a filler but also has partially participated in pozzolanic reactions due to its weak pozzolanic activity, thereby enhancing the binder matrix and, consequently, the tensile strength. In contrast, compressive strength has been influenced by both the binder and the hardness of filler particles. As such, the increased binder content has not been able to compensate for the lower hardness of green tuff compared to quartz, resulting in a slight reduction in compressive strength. Furthermore, the consistency of the mixes has improved with increasing replacement levels, due to the higher surface water content of green tuff particles. Water absorption has remained relatively unchanged with curing age, indicating that the surface water of green tuff powder has actively contributed to the hydration process.

کلیدواژه‌ها English

Reactive powder concrete
Alborz green tuff powder
compressive strength
water absorption
Tensile strength
  1. Awoyera, P. O., Isleem, H. F., & Nagaraju, V. (2025). Fire performance in eco-friendly concrete: An overview. Construction Materials and Their Properties for Fire Resistance and Insulation, 277-299.‏
  2. Gulzar, M. A., Ali, B., Barakat, O., Azab, M., Najemalden, A. M., Salih Mohammed, A., & Alashker, Y. (2023). Influence of jute fiber on tensile, electrical, and permeability characteristics of slag concrete: a better, cheaper, and eco-friendly substitute for conventional concrete. Journal of Natural Fibers, 20(1), 2170947.
  3. Emami Korandeh, M., Farrokhzadeh, S., & Ganjidoust, H. (2024). Sensitivity analysis in modeling compressive strength of green concrete with incineration ash using deep learning methods. Civil Engineering and Modern Technologies, 3(3). (Persian)
  4. Li, F., Lv, T., & Wei, S. (2023). Performance, mechanical properties and durability of a new type of UHPC—basalt fiber reinforced reactive powder concrete: a review. Polymers, 15(14), 3129.
  5. Aylas-Paredes, B. K., Han, T., Neithalath, A., Huang, J., Goel, A., Kumar, A., & Neithalath, N. (2025). Data driven design of ultra-high-performance concrete prospects and application. Scientific Reports, 15(1), 9248.
  6. Dong, S., Gu, J., Ouyang, X., Jang, S. H., & Han, B. (2025). Enhancing mechanical properties, durability and multifunctionality of concrete structures via using ultra-high performance concrete layer: A review. Composites Part B: Engineering, 112329.‏
  7. Hou, X., Wang, N., He, T., & Chen, C. (2024). Compressive stress-strain relationship of steam free reactive powder concrete at ultra-low temperatures. Cement and Concrete Composites, 152, 105655.
  8. Wang, B., & Chaimoon, K. (2023). Numerical Study on Structural Behavior of RPC Deep Beams(Doctoral dissertation, Mahasarakham University).
  9. Collepardi, S., et al., Mechanical properties of modified reactive powder concrete. ACI Special Publications, 1997. 173: 1-22.
  10. Ahmed, S., Abed, F., & Mannan, M. A. (2022, May). Compressive strength development of dune sand reactive powder concrete (RPC) under different curing conditions. In IOP conference series: earth and environmental science(Vol. 1026, No. 1, p. 012017). IOP Publishing.
  11. Yazıcı, H., Deniz, E., & Baradan, B. (2013). The effect of autoclave pressure, temperature and duration time on mechanical properties of reactive powder concrete. Construction and Building Materials, 42, 53-63.
  12. Amiri Shiri, A. A., & Darbhanzi, A. (2025). Experimental study on the elevated temperature performance of composite reactive powder concrete with polypropylene fiber-a case study. Journal of Building Pathology and Rehabilitation, 10(1), 67.
  13. Samani, E. G., & Heidari, A. (2023). Investigation of the effect of different grading on the mechanical properties of reactive powder concrete. Case Studies in Construction Materials, 19, e02168.
  14. Jianbing, Y., Zhiqiang, X., Yufeng, X., & Zhengxing, G. (2023). Seismic behavior of reactive powder concrete (RPC) interior beam–to-column joints under reversed cyclic loading. Case Studies in Construction Materials, 18, e01792.
  15. Roy, R., Mottaghi, M., Woods, M., & Pearce, J. M. (2025). Life Cycle Carbon Emissions Savings of Replacing Concrete with Recycled Polycarbonate and Sand Composite. Sustainability, 17(3), 839.
  16. Marini, L., Mannan, M. A., Kueh, A. B. H., Abdullah, A. A., Abed, F., & Gunasekaran, K. (2024). An analysis of the environmental effects of three types of concrete: Ready-mixed, reactive powder, and geopolymer. Alexandria Engineering Journal, 63(1), 102926.
  17. Veiseh, S., Mir Mohamadi, M. and Feyz Niya, S. (1991). Properties and applications of Alborz green tuff. Tehran: Building and housing research center, p 64. (In persian).
  18. Yalçınkaya, Ç., & Yazıcı, H. (2022). Early-age shrinkage properties of eco-friendly reactive powder concrete with reduced cement content. European Journal of Environmental and Civil Engineering, 26(2), 456-472.
  19. Luo, W., Wang, H., Li, X., Wang, X., Wu, Z., Zhang, Y., Lian, X., & Li, X. (2022). Mechanical properties of reactive powder concrete with coal gangue as sand replacement. Materials, 15(5), 1807.
  20. Chakherlou, J. and Shervani Tabar, B. (2020). Investigation of the effect of silica sand replacement with sand and quartz powder on compressive strength of reactive powder concrete. Modares Civil Engineering journal, Vol. 20(1), pp 7-17. (In Persian).
  21. Alkhaly, Y. R., Abdullah, H., & Hasan, M. (2022). Characteristics of reactive powder concrete comprising synthesized rice husk ash and quartzite powder. Journal of Cleaner Production, 375, 134154.
  22. Abellán-García, J., Daza, N., Molinares, M., Abbas, Y. M., & Khan, M. I. (2023). Multi-criteria optimization of cost-effective and environmentally friendly reactive powder concrete incorporating waste glass and micro calcium carbonate. Materials, 16(19), 6434.
  23. Rahmani, H., & Mohammad Zade, N. (2023). CO 2 Curing of Reactive Powder Concretes Modified by Waste Limestone Powder. Jordan Journal of Civil Engineering, 17(3).
  24. Ge, W., Wang, A., Zhang, Z., Ge, Y., Chen, Y., Li, W., Jiang, H., Shuai, H., Sun, C., Yao, S., & Qiu, L. (2023). Study on the workability, mechanical property, and water absorption of reactive powder concrete. Case Studies in Construction Materials, 18, e01777.
  25. Abrahimi, A., & Bhikshma, V. (2024). Experimental investigation on reactive powder concrete designed with micro silica and Alccofine1203. IOP Conference Series: Earth and Environmental Science, 1409(1), 012042.
  26. Ju, Y., Zhang, H., Wang, D., Kong, X., Ma, Y., Zhang, X., & Bai, J. (2024). Effect of mineral admixtures on the resistance to sulfate attack of reactive powder concrete. Journal of Cleaner Production, 440, 140769.
  27. Ni, W., Cui, X., Yuan, J., Sun, W., Cui, C., Wu, Y., & Feng, J. (2024). The influence of fiber, aggregate, and cementitious materials on the mechanical properties of ultra-high content steel fiber reinforced reactive powder concrete. Construction and Building Materials, 431, 136530.
  28. Asadi, A., & Sharvani tabar, B. (2024). Investigating the effect of replacing diatomite powder instead of quartz powder in reactive powder concrete. In 14th National Congress on Civil Engineering, Zanjan. (In persian).
  29. Huynh, T. P., Ngo, S. H., & Nguyen, V. D. (2024). A Modified Reactive Powder Concrete Made with Fly Ash and River Sand: An Assessment on Engineering Properties and Microstructure. Periodica Polytechnica Civil Engineering, 68(4), 1031-1039.
  30. Moradi, M., Bagherieh, A., & Esfahani, M. R. (2017). A review of behavioral modeling methods for concrete. In 7th International Conference on Sustainable Development and Urban Construction, Isfahan. (In persian).
  31. Çolak, A. (2006). A new model for the estimation of compressive strength of Portland cement concrete. Cement and Concrete Research, 36(12), 1409–1413.
  32. Mostofinejad, D., Rostami Nikoo, M., & Hosseini, S. A. (2016). Determination of optimized mix design and curing conditions of reactive powder concrete (RPC). Construction and Building Materials, 123, 754–767.
  33. Hasani, A., & Daneshfar, M. (2020). An experimental model for the effect of changes in the dimensions of fiber-reinforced concrete samples on fracture energy. Journal of Structural Engineering and Construction, 7(1), 72-87. (In Persian).
  34. Ramezanianpour, A., Mirvalad, S.S., Aramoun, E., and Peydayesh, M. (2015). Effect of Four Iranian Natural Pozzolans on Concrete Durability Against Sulfate Attack. Amirkabir Journal of Civil Engineering, Vol. 46(2), pp 11–17. (In Persian).
  35. Dardaei, S., Aghayari, R. and Nik Nia, B. (2016). Study on the effect of Shahin-Dezh green Tuff on the mechanical characteristics of roller compact concrete. Journal of Structural and Construction Engineering. Vol. 3 (3). Pp 97-111. (In Persian).
  36. Ghaed Rhmati, A. (2019). Investigating the effect of Abic green tuff on the properties and durability of concrete under the attack of magnesium sulfate. In: International Conference on civil engineering, architecture and urban development management in Iran. Tehran: University of Tehran, p 17. (In Persian).
  37. Cai, Y., Lin, Z., Zhang, J., Lu, K., Wang, L., Zhao, Y., & Huang, Q. (2022). Dosage effect of wet-process tuff silt powder as an alternative material of sand on the performance of reactive powder concrete. Materials, 15(11), Article 3930.
  38. Naderi, M., Rashvand Aveh, A. and Saberi Vaezaneh, A. (2023). Investigation of the Effect of Different Aggregates on the durability of Self-Compacting Concretes Exposed to Sulfate using "Friction-Transfer" method. Journal of structural and construction engineering, Vol. 9(12), pp 43-60. (In Persian).
  39. Wille, A.E. Naaman, G.J. Parra-Montesinos "Ultra-High-Performance Concrete with Compressive Strength Exceeding 150 MPa: A Simpler Way", Aci Materials Journal, 108, pp.46-54 (2011).
  40. National Building Regulations. Chapter 9: Design and construction of concrete structures (2020 edition). Management and Planning Organization of Iran.
  41. Mamaghani Bonabi, A., Zare Ahmadabad, M., & Maqsoudi, M. (2019). Aeolian sand provenance using mineralogy and morphoscopy of sand grains (Case study: Qumtapeh, Soufian – North of Lake Urmia). Geography and Environmental Hazards, 8(3), 59–77.
  42. Shervani Tabar, B., & Asadi Melerdi, M. (2022). Experimental Investigation of the Effects of Curing Temperature and Amount of Silica Fume on Properties of Reactive Powder Concrete Made from Local Materials. Journal of Concrete Structures and Materials, 7(2), 191-212. (In persian).

  • تاریخ دریافت 27 بهمن 1403
  • تاریخ بازنگری 04 خرداد 1404
  • تاریخ پذیرش 26 خرداد 1404