تأثیر ترکیب سنگدانه‌های سنگین مگنتیت و الیاف فولادی در بهبود خواص مکانیکی بتن‌های سنگین

نوع مقاله : پژوهشی

نویسندگان

1 دانشگاه سمنان

2 سمنان

چکیده

در این مقاله خصوصیات مکانیکی بتن‌های ویژه بااستفاده از سنگدانه‌های سنگین مگنتیت و الیاف فولادی با 24 طرح اختلاط با درصدهای 0، 50 و 100% سنگدانه‌های سنگین جایگزین سنگدانه‌های معمولی، با نسبت‌های آب به سیمان 52/0 و 4/0 و الیاف فولادی با درصدهای 0، 1، 5/1 و 2% با مجموعاً 300 نمونۀ آزمایشگاهی مکعبی، استوانه‌ای، تیر بررسی گردید. نتایج نشان داد که استفاده از سنگدانه‌های سنگین و الیاف فولادی باعث افزایش مقاومت‌های فشاری، کششی و برشی بتن شد و بیشترین تأثیر در نمونه‌های با 50% سنگدانۀ سنگین و 2% الیاف اتفاق افتاد.

کلیدواژه‌ها


عنوان مقاله [English]

Magnetic Aggreagates and Steel Fibre Combination Effect on Improving of Mechanical Characteristics of High Weight Concrete

نویسندگان [English]

  • Mohammad Kazem Sharbatdar 1
  • Majid Mehrbod 2
1 Semnan University
2 Semnan University
چکیده [English]

In this paper, the mechanical properties of special concrete with magnetic heavy weight aggregates and steel fibres, from 24 different mixed designs with 0, 50, 100% of heavy weight aggregates replacing with regular aggregates, 0.52 and 0.4 water-cement ratios and 0, 1, 1.5 and 2% of steel fibers, totally 300 specimens including cubic, cylindrical, and beam was investigated. The results showed that the compressive, tensile and shear strenghts were improved with using special aggreagate and fibres particularly with 50% high weight aggreagate and 2% steel fibres.

کلیدواژه‌ها [English]

  • Special Concrete
  • Steel Fibers
  • Heavy Aggregates
  • shear
  • compressive
  • tensile
1. ACI544.1 R96, "State of The Art Report on The Fiber Reinforced Concrete".
2. Bentur, A., Mindess, S., "Fibre Reinforced Cementitious Composites", Elsevier applied science London and Newyork, Pp. 624,(1991).
3. Colin, D. Johnston, "Fiber Reinforced Cements and Concretes", Advances in concrete technology Vol. 3, Gordon and Breach Science publishes, (2001).
4. کیوانی، عبداله، "بتن الیافی و کاربرد آن در سازه‌های بتنی"، کارگاه‌های تخصصی بتن، بتن‌های ویژه، مهرماه 84.
5. Marar, Kh., Eren, Ö., Roughani, H., "The Influence of Amount and Aspect Ratio of Fibers on Shear Behaviour of Ssteel Fiber Reinforced Concrete", KSCE Journal of Civil Engineering, Vol. 21, Issue 4, Pp. 1393–1399 (2017).
6. RILEM TC 162-TDF, "Test and Design Method for Steel Fibre Reinforced Concrete—σ−ԑ Design Method", Mater. Struct., 36, Pp. 560–567, (2003).
7. Doo-YeolYoo, Young-SooYoon, Nemkumar, B., "Flexural Response of Steel-fiber-reinforced Concrete Beams: Effects of Strength, Fiber Content, and Strain-rate", Elsevier Cement and Concrete Composites, Vol. 64, Pp. 84-92, (2015).
8. Murthy Dakshina, N., "Splitting Tensile Strength of High Volume Fly Ash Concretes with and without Steel Fibers in Different Grades", International conference recent advance on concrete andconstruction technology, SRMIST, Chennai, India, Pp. 23-33, Dec 7-9, (2005).
9. Permalatha, J., Govindraj, V., "Experimental sStudies on Fiber Reinforced Concrete", proceedimg of the INCONTEST, Coimbatore, Sep 10-12, Pp 462-468, (2003).
10. Raghuprasad, P., Ravindranatha, S., "Experimental Investigation on Flexural Strength of Slurry Infiltrated Fiber Concrete", proceedimg of the INCONTEST, Coimbatore, Sep 10-12, Pp. 403-408, (2003).
11. Wasim, A., Iqbal Khan, M., Mourad, Sh., "Evaluation of Mechanical Properties of Steel Fiber Reinforced Concrete with Different Strengths of Concrete", Elsevier Construction and Building Materials, Vol. 168, Pp. 556-569, (2018).
12. Afroughsabet, V., Ozbakkaloglu, T., "Mechanical and Durability Properties of High-strength Concrete Containing Steel and Polypropylene Fibers", Elsevier Construction and Building Materials Vol. 94, Pp. 73-82, (2015).
13. Sukontasukkul, P., "Tensile Behaviour of High Content Steel and Polypropylene Fiber Reinforced Mortar", Thammasat International journal science on Tech, Vol. 8, No.3, July-Sep, Pp. 50-56, (2003).
14. Özen., S., Şengül, C., Erenoğlu, T., "Properties of Heavyweight Concrete for Structural and Radiation Shielding Purposes", Springer Arabian Journal for Science and Engineering, Vol. 41, Issue 4, Pp. 1573–1584, (2016).
15. Ristinah, S., "Evaluation of the Characteristic of Heavyweight Concrete using Steel Slag Aggregates for Radiation Shielding", Journal of Applied Environmental and Biological Sciences. Brawijaya, Indonesia, Vol. 1, No.11, Pp. 512-521. (2011).
16. Brand, A., Roesler J. "Steel Furnace Slag Aggregate Expansion and Hardened Concrete Properties", Elsevier Cement and Concrete Composites, Vol. 60, Pp. 1-9, (2015).
17. Akkurt, C., Basyigit, S., Kilincarslan, B., "Radiation Shielding of Concretes Containing Different Aggregates", Elsevier, Cement and concrete research 28, Vol. 28, No. 2, pp. 153 – 157, (2006).
18. Un, A., Demir, F., "Determination of Mass Attenuation Coefficients, Effective Atomic Numbers and Effective Electron Numbers for Heavy-weight and Normal-weight Concretes", Elsevier Applied Radiation and Isotopes, Vol. 80, Pp. 73-77, (2013).
19. Gonzalez-Ortega, M. A., Cavalaro, S. H. P., Aguado, A., "Influence of Barite Aggregate Friability on Mixing Process and Mechanical Properties of Concrete", Elsevier Construction and Building Materials, Vol. 74, Pp. 169-175, (2015)
20. Osma, Y., "Physical and Mechanical Characteristics of Heavyweight Concrete Produced Using Barite", University of Süleyman Demirel, Master Thesis, (in Turkish) (2002).
21. Farooq, M. A., Sato, Y., Ayano, T. "Experimental and Numerical Investigation of Static and Fatigue Behavior of Mortar with Blast Furnace Slag Sand as Fine Aggregates in Air and Water", Elsevier Construction and Building Materials, Vol. 143, Pp. 429-443 (2017).
22. Horszczaruk, E., Sikora, P., Zaporowski, P. "Mechanical Properties of Shielding Concrete with Magnetite Aggregate Subjected to High Temperature", Elsevier Procedia Engineering, Vol. 108, Pp. 39-46 (2015).
23. Elkobbah, K., "Behavior of Heavy Weight Concrete under Impact Effect", 13th International Conference on Aerospace Sciences and Aviation Technolog, Cairo, Egypt, (2009).
24. Singh, B. S., Ramana, K. V., "Mechanical Properties of Heavyweight cConcrete Using Heavyweight Coarse-aggregate as Hematite", International journal of research in engineering and technology. Vol. 3, Issue 09, (2014).
25. Binici, H., Aksogan, O., "Durability of Concrete Made with Natural Granular Granite, Silica Sand and Powders of Waste Marble and Basalt as Fine Aggregate", Elsevier Journal of Building Engineering, Vol. 19, Pp. 109-121 (2018).