استفاده از نانوذرات برگ نخل در بهبود خصوصیات پوشش بتنی کانال‌های انتقال آب

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه علوم و مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان، اصفهان، ایران.

10.22059/jwim.2023.331248.941

چکیده

این پژوهش با هدف استفاده از پوزولان تولیدشده از برگ نخل خرما در مقیاس نانو اجرا گردید و برخی خصوصیات مکانیکی بتن ساخته‌شده از جمله مقاومت فشاری، مقاومت کششی، الاستیسیته و دوام بتن حاوی پوزالان برگ نخل خرما در محیط سولفاته، مورد بحث و بررسی قرار گرفت. نتایج حاصل از این پژوهش نشان داد که در بتن ساخته‌شده با پوزولان در سنین کم میزان مقاومت فشاری بتن کم‌تر از بتن شاهد می­باشد. در سنین بیش‌تر با گذر زمان، میزان مقاومت فشاری و کششی افزایش یافتند، به‌طوربه‌طوری‌که این پارامترها در سن 128 روزه نسبت به هفت روزه به‌ترتیب حدودا 35/12 و 8/5 برابر افزایش داشت. مقادیر مدول الاستیسیته در تیمارهای حاوی پوزولان کاهش چشم‌گیر حدود 18 درصدی نسبت به بتن شاهد داشت. عملکرد تیمارهای حاوی نانوذرات برگ نخل در محیط­های سولفاته مناسب­تر از بتن شاهد بود. در نهایت با توجه به موارد بررسی‌شده می­توان نتیجه‌گیری نمود که استفاده از پوزولان 20 درصد نانوذرات نخل با داشتن نسبت کرنش 318 نسبت به بتن  شاهد، دارای مقادیر قابلیت تغییر شکل قابل‌ملاحظه‌ای می‌باشد، لذا استفاده از این مواد را به­عنوان ماده پرکننده برای درزهای انبساط و انقباض امکان‌پذیر می­سازد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Use of palm leaf nanoparticles in improving the properties of concrete lining of water conveyance canals

نویسندگان [English]

  • Alireza Gohari
  • Jahangir Abedi Koupai
  • Saeid Eslamian
  • Armita Motamedi
Department of Water Science and Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.
چکیده [English]

This research was conducted using pozzolans produced from date palm leaves at the nanoscale and some mechanical properties of concrete were investigated. The studied properties are compressive strength, tensile strength, elasticity, and durability of concrete containing date palm leaf pozzolans in a sulfated environment. The results of this study showed that in concrete made with pozzolan at low ages, the amount of compressive strength of concrete is less than control concrete, and at older ages over time, the amount of compressive and tensile strength increased; to the point that at 128 days these parameters were approximately 12.35 and 5.8 times higher than that of seven days. The modulus of elasticity values in the treatments containing pozzolan were significantly reduced by nearly 18 percent compared to the control concrete. The performance of treatments containing palm leaf nanoparticles in a sulfated environment was better than control concrete. Finally, according to the cases studied, it can be concluded that the use of 20 percent pozzolanic palm nanoparticles with a strain ratio of 318 compared to control concrete, has significant deformation values. Hence, the use of this makes the material as a filler possible for expansion and contraction joints.

کلیدواژه‌ها [English]

  • Elasticity
  • Concrete
  • Pozzolan
  • Pushing resistance
  • Tensile strength

مراجع

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مدیریت آب و آبیاری
دوره 14، شماره 1
فروردین 1403
صفحه 43-54

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