بررسی آزمایشگاهی خصوصیات بتن خودتراکم الیافی مقاومت بالا ساخته شده از سنگدانه کاملا بازیافتی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی دانشگاه لرستان

2 دانشکده فنی مهندسی، دانشگاه آیت ا... بروجردی (ره)، بروجرد ایران.

چکیده

در این مطالعه، اثر استفاده منفرد و ترکیبی الیاف‌های پلی وینیل الکل و فولادی بر خصوصیات بتن خودتراکم الیافی مقاومت بالا ساخته شده از سنگدانه کاملا بازیافتی در سه بخش خصوصیات مکانیکی، رفتار در برابر بارهای ضربه‌ای و خصویات دوام، مورد بررسی قرار گرفته است. برای ایجاد یک مطالعه جامع، از طرح‌های اختلاط متنوع استفاده شده است. بتن سازگار با محیط‌زیست مورد استفاده در این مطالعه، از ریزدانه بازیافتی گرانیتی، الیاف پلی-وینیل الکل و فولادی با درصدهای 5/0، 1، 5/1 و 2 درصد و نسبت ثابتی از خاکستر بادی کلاس F به عنوان جایگزینی از سیمان ساخته شده است. آزمایش‌های آلتراسونیک، ضربه (سقوط وزنه)، جذب آب، مقاومت کششی، مقاومت فشاری و رفتار خمشی برای ارزیابی خصوصیات بتن ساخته شده در این مطالعه مورد بررسی قرار گرفته است. نتایج نشان داده است که با اضافه نمودن الیاف به بتن ساخته شده با مصالح ریزدانه کاملا بازیافتی، خصوصیات مکانیکی بهبود یافته و این اثر به میزان محسوسی وابسته به نوع الیاف، درصد مورد استفاده و منفرد یا ترکیبی بودن الیاف‌ها است. از سوی دیگر با اضافه نمودن الیاف به طرح اختلاط پایه، ظرفیت جذب و اتلاف انرژی نمونه های مورد آزمایش در تست سقوط وزنه افزایش قابل‌ملاحظه‌ای داشته است.

کلیدواژه‌ها


عنوان مقاله [English]

Material Properties of High-Strength Self-Compacting Concrete Made with Fully Recycled Aggregate: An Experimental Study

نویسندگان [English]

  • Amir Arsallan Zamani 1
  • Masoud Ahmadi 2
  • Ahmad Dalvand 1
1 Department of engineering, Lorestan university
2 Department of Civil Engineering, Ayatollah Boroujerdi University, Boroujerd, Iran
چکیده [English]

In this study, the effect of single and hybrid fibers on mechanical properties and impact behavior of high-strength self-compacting concrete containing fully recycled aggregate has been investigated in three parts: mechanical properties, impact behavior, and durability properties. The used fibers are steel and polyvinyl alcohol fibers, which were added to the plain mixture. The various mix compositions were made to consider the effect of different fiber combinations, contents, and types. The sustainable high-strength concrete used in this study was composed of fully recycled fine aggregate, different contents of steel and polyvinyl alcohol fibers, and constant content of fly ash as a partial cement replacement. The properties of prepared concrete were determined using the water absorption, the ultrasonic pulse velocity, the repeated drop weight impact, the splitting tensile strength, the compressive strength, and the flexural strength tests. The results show that by adding fibers to concrete made of fully recycled aggregate, the mechanical properties are improved, and this effect is significantly dependent on the type, the percentage, and the selected form (single or blended) of fibers. On the other hand, by adding fibers to the control mixture, the adsorption capacity and energy dissipation of the samples tested in the drop weight test have been significantly increased.

کلیدواژه‌ها [English]

  • Waste granite
  • Self-compacting concrete
  • Mechanical properties
  • Steel fiber
  • PVA
[1] Vishwakarma, V., & Ramachandran, D. (2018). “Green Concrete mix using solid waste and nanoparticles as alternatives–A review”, Construction and Building Materials, 162, 96-103.
[2] Jain, A., Gupta, R., & Chaudhary, S. (2019). “Performance of self-compacting concrete comprising granite cutting waste as fine aggregate”, Construction and Building Materials, 221, 539-552.
[3] Ostrowski, K., Stefaniuk, D., Sadowski, Ł., Krzywiński, K., Gicala, M., & Różańska, M. (2020). “Potential use of granite waste sourced from rock processing for the application as coarse aggregate in high-performance self-compacting concrete”, Construction and Building Materials, 238, 117794.
[4] Rana, A., Kalla, P., Verma, H. K., & Mohnot, J. K. (2016). “Recycling of dimensional stone waste in concrete: A review”, Journal of cleaner production, 135, 312-331.
[5] Singh, S., Nagar, R., & Agrawal, V. (2016). “Performance of granite cutting waste concrete under adverse exposure conditions”, Journal of Cleaner Production, 127, 172–182.
[6] Montani, C. (2016). XXVIII world marble and stones report 2017. Aldus Casa di Edizioni in Carrara.
[7] Aarthi, K., & Arunachalam, K. (2018). “Durability studies on fibre reinforced self compacting concrete with sustainable wastes”, Journal of Cleaner Production, 174, 247-255.
[8] Tam, V. W. Y., Soomro, M., & Evangelista, A. C. J. (2018). “A review of recycled aggregate in concrete applications (2000-2017)”, Construction and Building Materials, 172, 272-292.
[9] Oikonomou, N. D. (2005). “Recycled concrete aggregates”, Cement and concrete composites, 27(2), 315-318.
[10] Binici, H., Shah, T., Aksogan, O., & Kaplan, H. (2008). “Durability of concrete made with granite and marble as recycle aggregates”, Journal of materials processing technology, 208(1–3), 299-308.
[11] Singh, S., Nagar, R., Agrawal, V., Rana, A., & Tiwari, A. (2016). “Sustainable utilization of granite cutting waste in high strength concrete”, Journal of Cleaner Production, 116, 223-235.
[12] Sharma, N. K., Kumar, P., Kumar, S., Thomas, B. S., & Gupta, R. C. (2017). “Properties of concrete containing polished granite waste as partial substitution of coarse aggregate”, Construction and Building Materials, 151, 158-163.
[13] Ghorbani, S., Taji, I., De Brito, J., Negahban, M., Ghorbani, S., Tavakkolizadeh, M., & Davoodi, A. (2019). “Mechanical and durability behaviour of concrete with granite waste dust as partial cement replacement under adverse exposure conditions”, Construction and Building Materials, 194, 143-152.
[14] Savadkoohi, M. S., & Reisi, M. (2020). “Environmental protection based sustainable development by utilization of granite waste in Reactive Powder Concrete”, Journal of Cleaner Production, 266, 121973.
[15] Zafar, M. S., Javed, U., Khushnood, R. A., Nawaz, A., & Zafar, T. (2020). “Sustainable incorporation of waste granite dust as partial replacement of sand in autoclave aerated concrete”, Construction and Building Materials, 250, 118878.
[16] Zhu, W., Gibbs, J. C., & Bartos, P. J. M. (2001). “Uniformity of in situ properties of self-compacting concrete in full-scale structural elements”, Cement and concrete composites, 23(1), 57-64.
[17] Shi, C., Wu, Z., Lv, K., & Wu, L. (2015). “A review on mixture design methods for self-compacting con-crete”, Construction and Building Materials, 84, 387-398.
[18] Zhang, X., Luo, Y., Wang, L., Zhang, J., Wu, W., & Yang, C. (2018). “Flexural strengthening of damaged RC T-beams using self-compacting concrete jacketing under different sustaining load”, Construction and Building Materials, 172, 185-195.
[19] Moghadam, A. S., Omidinasab, F., & Dalvand, A. (2020). “Experimental investigation of (FRSC) cementitious composite functionally graded slabs under projectile and drop weight impacts”, Construction and Building Materials, 237, 117522.
[20] Dalvand, A., & Ahmadi, M. (2021). “Impact failure mechanism and mechanical characteristics of steel fiber reinforced self-compacting cementitious composites containing silica fume”, Engineering Science and Technology, an International Journal, 24(3), 736-748.
[21] Jain, A., Gupta, R., & Chaudhary, S. (2020). “Sustainable development of self-compacting concrete by using granite waste and fly ash”, Construction and Building Materials, 262, 120516.
[22] Wang, S., & Li, V. C. (2007). “Engineered cementitious composites with high-volume fly ash”, ACI Materials journal, 104(3), 233.
[23] Sadek, D. M., El-Attar, M. M., & Ali, H. A. (2016). “Reusing of marble and granite powders in self-compacting concrete for sustainable development”, Journal of Cleaner Production, 121, 19-32.
[24] ASTM International C618. (2015). C618-08a: standard specification for coal fly ash and raw or calcined natural pozzolan for use in Concrete. American Society of Testing and Materials.
[25] Mastali, M., Dalvand, A., & Sattarifard, A. (2017). “The impact resistance and mechanical properties of the reinforced self-compacting concrete incorporating recycled CFRP fiber with different lengths and dosages”, Composites Part B: Engineering, 112, 74-92.
[26] Mastali, M., Dalvand, A., & Fakharifar, M. (2016). “Statistical variations in the impact resistance and mechanical properties of polypropylene fiber reinforced self-compacting concrete”, Comput. Concrete, 18(1), 113-137.
[27] ASTM C39/C39M-12. (2012). Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, ASTM International, West Conshohocken, PA.
[28] ASTM C496/C496M. (2011). Standard test method for splitting tensile strength of cylindrical concrete specimens. ASTM International, West Conshohocken, PA.
[29] ASTM C293. (2016). Standard test method for flexural strength of concrete (using simple beam with center-point loading). ASTM International West Conshohocken, PA.
[30] ASTM C597. (2016). Standard test method for pulse velocity through concrete. ASTM International West Conshohocken, PA.
[31] BS 1015-18. (2002). Methods of test for mortar for masonry. Determination of water absorption coefficient due to capillary action of hardened mortar. British Standards Institution.
[32] ACI Committee 544. (1988). “Measurement of properties of fiber reinforced concrete”, ACI Materials Journal, 85(6), 583-593.
[33] Mastali, M., & Dalvand, A. (2016). “Use of silica fume and recycled steel fibers in self-compacting concrete (SCC)”, Construction and Building Materials, 125, 196-209.
[34] Mastali, M., & Dalvand, A. (2017). “Fresh and hardened properties of self-compacting concrete reinforced with hybrid recycled steel–Polypropylene fiber”, Journal of Materials in Civil Engineering, 29(6), 4017012.
[35] Aslani, F., & Nejadi, S. (2013). “Self-compacting concrete incorporating steel and polypropylene fibers: Compressive and tensile strengths, moduli of elasticity and rupture, compressive stress–strain curve, and energy dissipated under compression”, Composites Part B: Engineering, 53, 121-133.
[36] El-Dieb, A. S. (2009). “Mechanical, durability and microstructural characteristics of ultra-high-strength self-compacting concrete incorporating steel fibers”, Materials & Design, 30(10), 4286-4292.
[37] Mastali, M., Dalvand, A., Sattarifard, A. R., Abdollahnejad, Z., & Illikainen, M. (2018). “Characterization and optimization of hardened properties of self-consolidating concrete incorporating recycled steel, industrial steel, polypropylene and hybrid fibers”, Composites Part B: Engineering, 151, 186-200.
[38] Ahmadi, M., Kheyroddin, A., Dalvand, A., & Kioumarsi, M. (2020). “New empirical approach for determining nominal shear capacity of steel fiber reinforced concrete beams”, Construction and Building Materials, 234, 117293.
[39] Ranjbar, N., Mehrali, M., Behnia, A., Javadi Pordsari, A., Mehrali, M., Alengaram, U. J., & Jumaat, M. Z. (2016). “A comprehensive study of the polypropylene fiber reinforced fly ash based geopolymer”, PloS one, 11(1), e0147546.
[40] Cunha, V. M. C. F., Barros, J. A. O., & Sena-Cruz, J. (2007). Pullout behaviour of hooked-end steel fibres in self-compacting concrete. Universidade do Minho. Departamento de Engenharia Civil (DEC).
[41] Abdallah, S., Fan, M., & Rees, D. W. A. (2018). “Bonding mechanisms and strength of steel fiber–reinforced cementitious composites: Overview”, Journal of Materials in Civil Engineering, 30(3), 4018001.
[42] ASTM, C. (1998). 1018 Standard Test Method for Flexural Toughness and First-Crack Strength of Fiber Reinforced Concrete. In American Society of Testing and Materials.
 
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