پژوهشنامه حمل و نقل

پژوهشنامه حمل و نقل

بررسی تجربی رفتار شکست روسازی بتن غلتکی حاوی خرده آجر بازیافتی

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشیار، دانشکده مهندسی عمران،دانشگاه صنعتی نوشیروانی، بابل، ایران
2 دانش آموخته کارشناسی ارشد،دانشکده مهندسی عمران،دانشگاه صنعتی نوشیروانی، بابل، ایران
3 دانشجوی دکتری، دانشکده مهندسی عمران،دانشگاه صنعتی نوشیروانی، بابل، ایران
چکیده
سالانه مقدار قابل توجهی آجر ضایعاتی از چرخه ساخت خارج شده و در محل دفن زباله ها انباشته می‌شود. بازیافت این ضایعات می تواند به طور قابل توجهی مشکل ذخیره سازی زباله و آلودگی زیست محیطی را کاهش داده و به حفظ منابع سنگدانه های طبیعی کمک کند. در پژوهش حاضر، از خرده آجر به عنوان جایگزین شن (صفر، 10، 20، 30 و 40 درصد) در 5 طرح اختلاط روسازی بتن غلتکی (RCCP) استفاده شده است. خصوصیات مکانیکی به کمک آزمون های مقاومت فشاری، کششی دونیم شدن و رفتار شکست در مود اول بارگذاری با استفاده از آزمایش خمش سه نقطه ای بر روی 60 نمونه نیم دیسک خمشی (SCB) با ترک اولیه به طول 20 و 25 میلیمتر و نرخ بارگذاری 1 و 5 میلیمتر بر دقیقه مورد مطالعه قرار گرفت. نتایج حاکی از آن است که مقادیر مقاومت فشاری و کششی دونیم شدن نمونههای بتن غلتکی با افزایش مقدار آجر کاهش مییابد. در نرخ بارگذاری ثابت چقرمگی شکست (KI) با افزایش طول ترک کاهش مییابد و همچنین، با افزایش نرخ بارگذاری در طول ترک ثابت KI روند افزایشی پیش میگیرد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Experimental Study of the Fracture Behaviour of Roller Compacted Concrete Pavement Containing Recycled Crushed Brick

نویسندگان English

Saeid Hesami 1
Sara Shirzad 2
Rahel Khamsi 3
1 Associate Professor, Department of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran.
2 M.Sc., Grad., Department of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran.
3 Ph.D., Student, Department of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran.
چکیده English

Every year, a significant amount of waste brick is removed from the construction cycle and is accumulated in the landfill. The recycling of these wastes can significantly reduce the problem of waste storage and environmental pollution and help preserve the resources of natural aggregates. In the current research, crushed brick aggregate (CBA) has been used as a substitute for sand (0, 10, 20, 30 and 40%) in 5 roller compacted concrete pavement (RCCP) mixing plans. Mechanical properties including tests of compressive strength, tensile strength, and fracture behavior in the first mode of loading using a three-point bending test on 60 semi-circular bending (SCB) specimens with initial cracks of 20 and 25 mm in length and the loading rate of 1 and 5 mm/min was studied. The results indicate that the compressive and tensile strength values of RCCP samples decrease with the increase in the amount of CBA. At a constant loading rate, the fracture toughness (KI) decreases with increasing crack length, and, with increasing loading rate, KI increases in constant crack length.

کلیدواژه‌ها English

Fracture Toughness
Crushed Brick
Roller Compacted Concrete Pavement
Semi-Circular Bending
-نجاتی، حمیدرضا و قزوینیان، عبدالهادی (1396). تاثیر نرخ بارگذاری بر مکانیزم شکست سنگ تحت بارگذاری کشش غیر مستقیم. مکانیک سنگ.
-Alam, M., Azad, M., & Kadir, M. (2010). Fracture toughness of plain concrete specimens made with industry-burnt brick aggregates. Journal of Civil Engineering (IEB), 38(1), 81-94.
-Alamdarlo, M. N., & Hesami, S. (2020). Measuring the effect of pavement porosity filling on skid resistance by numerical model and field test. Measurement, 152, 107269.
-Anderson, T. L. (2017). Fracture mechanics: fundamentals and applications. CRC Press.
-Ayatollahi, M., Aliha, M., & Saghafi, H. (2011). An improved semi-circular bend specimen for investigating mixed mode brittle fracture. Engineering Fracture Mechanics, 78(1), 110-123.
-Bazant, Z. P., & Planas, J. (1997). Fracture and size effect in concrete and other quasibrittle materials Vol. 16. CRC Press.
-Cachim, P. B. (2009).Mechanical properties of brick aggregate concrete. Construction and Building Materials, 23(3), 1292-1297.
-Chhorn, C., Kim, Y. K., Hong, S. J., & Lee, S. W. (2019). Evaluation on compactibility and workability of roller-compacted concrete for pavement. International Journal of Pavement Engineering, 20(8), 905-910.
-Debieb, F., & Kenai, S. (2008). The use of coarse and fine crushed bricks as aggregate in concrete. Construction and Building Materials, 22(5), 886-893.
-ghorbanian, e., & Hesami, S.­ (2024). A Review of LC3 Cement: Feasibility of Its Use in Concrete Pavements Alongside the Reduction of Greenhouse Gases Emission. Journal of Transportation Infrastructure Engineering, 10(2), 39-55. doi.org/10.22075/jtie.2024.34499.1679
-Harrington, D., Abdo, F., Ceylan, H., Adaska, W., Hazaree, C., & Bektas, F. (2010). Guide for roller-compacted concrete pavements.
-Hesami, S., Ahmadi, S., Ghalesari, A. T., & Hasanzadeh, A. (2013). Ground surface settlement prediction in urban areas due to tunnel excavation by the NATM. Electr. J. Geotech. Eng, 18, 1961.
-Hesami, S., & Sadeghi, V. (2015). Numerical investigation of the shape memory alloy dowels in jointed concrete pavements. International Journal of Pavement Research and Technology, 8(4), 251.
-Khalaf, F. M. (2006). Using crushed clay brick as coarse aggregate in concrete. Journal of Materials in Civil Engineering, 18(4), 518-526.
-Khalaf, F. M., & DeVenny, A. S. (2005). Properties of new and recycled clay brick aggregates for use in concrete. Journal of Materials in Civil Engineering, 17(4), 456-464.
-Klak, F. S., Saleh, H., & Tais, A. S. (2022). Recycling of crushed clay bricks as fine aggregate in concrete and cement mortar. Australian Journal of Structural Engineering, 1-10.
-Lim, I., Johnston, I., & Choi, S. (1993). Stress intensity factors for semi-circular specimens under three-point bending. Engineering Fracture Mechanics, 44(3), 363-382.
-Lopez-Uceda, A., Agrela, F., Cabrera, M., Ayuso, J., & López, M. (2018). Mechanical performance of roller compacted concrete with recycled concrete aggregates. Road Materials and Pavement Design, 19(1), 36-55.
-Mermerdaş, K., Güneyisi, E., Gesoğlu, M., & Özturan, T. (2013). Experimental evaluation and modeling of drying shrinkage behavior of metakaolin and calcined kaolin blended concretes. Construction and Building Materials, 43, 337-347.
-Modarres, A., & Hosseini, Z. (2014). Mechanical properties of roller compacted concrete containing rice husk ash with original and recycled asphalt pavement material. Materials & Design, 64,
227-236.
-Mojtahedzadeh, e., hesami, s., & Ravanshadnia, m. (2022). Effect of nanosilica, nano halloysite and nano montmorillonite on the mechanical properties of concrete pavements. Asas Journal, 24(66), 16-26. https://www.isceiran.org/article_173526_1bc4c284ad037ddc57980eeb3945afe0.pdf
-Nabizadeh Rafsanjani, H., Chehreghani, M., & Nourbakhsh, M. (2011). Recycling of crushed clay brick as aggregate in concrete. Applied Mechanics and Materials.
-Ogbonna, A. C. (2020). Characterization Of Crushed Bricks Aggregate As A Replacement Of Natural Coarse Aggregate In Construction Of Roller–Compacted Concrete Pavement. Annals of the Faculty of Engineering Hunedoara, 18(2),
105-114.
-Sadeghi, V., & Hesami, S. (2018). Finite element investigation of the joints in precast concrete pavement. Computers and Concrete. An International Journal, 21(5), 547-557.
-Settari, C., Debieb, F., Kadri, E. H., & Boukendakdji, O. (2015). Assessing the effects of recycled asphalt pavement materials on the performance of roller compacted concrete. Construction and Building Materials, 101, 617-621.
-Shi, D., & Chen, X. (2018). Flexural tensile fracture behavior of pervious concrete under static preloading. Journal of Materials in Civil Engineering, 30(11), 060180150.
-Tavakoli, D., Fakharian, P., & de Brito, J. (2021). Mechanical properties of roller-compacted concrete pavement containing recycled brick aggregates and silica fume. Road Materials and Pavement Design, 1-22.
-Xiong, B., Demartino, C., Xu, J., Simi, A., Marano, G. C., & Xiao, Y. (2021). High-strain rate compressive behavior of concrete made with substituted coarse aggregates: Recycled crushed concrete and clay bricks. Construction and Building Materials, 301, 123875.
-Yang, J., Du, Q., & Bao, Y. (2011). Concrete with recycled concrete aggregate and crushed clay bricks. Construction and Building Materials, 25(4), 1935-1945.
-Yang, S., Hu, X., Leng, K., & Liu, Y. (2014). Correlation between cohesive crack-tip local fracture energy and peak load in mortar beams. Journal of Materials in Civil Engineering, 26(10), 04014069.
-Zheng, C., Lou, C., Du, G., Li, X., Liu, Z., & Li, L. (2018). Mechanical properties of recycled concrete with demolished waste concrete aggregate and clay brick aggregate. Results in Physics, 9, 1317-1322.
-Zong, L., Fei, Z., & Zhang, S. (2014). Permeability of recycled aggregate concrete containing fly ash and clay brick waste. Journal of Cleaner Production, 70, 175-182.