بهینه‌سازی خواص مکانیکی خمیر ژئوپلیمری حاوی رس کلسینه شده و نرمه کلینکر به روش تاگوچی

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشکده شیمی، دانشگاه سیستان و بلوچستان، زاهدان، ایران،

چکیده

از آنجایی که آلودگی‌‌های زیست محیطی یکی از دغدغه‌‌های بشر در جوامع امروزی است، سیمان ژئوپلیمری یک ماده جدید و نوین در صنعت ساخت و ساز است، که دارای عملکردی بالا و کارایی مطلوب می‌‌باشد. تولید سیمان ژئوپلیمری با استفاده از پوزولان‌‌ها و پسماند‌های آلومینو‌سیلیکاتی، سازگار با محیط زیست می‌تواند، به عنوان یک جایگزین برای تولید بتن معمولی در مقابل انتشار آلودگی حاصل از تولید سیمان‌های پرتلند باشد. این تحقیق به سنتز سیمان ژئوپلیمری بر پایه رس کلسینه شده منطقه بیدستر شهرستان خاش و ارتقاء مقاومت مکانیکی آن از طریق افزودن نرمه کلینکر کوره‌های دوار سیمان می‌‌پردازد. آزمایش‌‌‌ها به روش تاگوچی طراحی گردید. مدل تاگوچی آرایهL16  را پیشنهاد داد و 16 آزمایش طراحی شد. نسبت AL/NA برابر با یک در نظر گرفته شد. سطوح مختلف مدول سیلیس محلول فعال‌کننده (0، 0/9، 1 و 1/1)، درصد افزودنی نرمه کلینکر (0، 5، 10 و 15) و نسبت آب به جامد (0/25، 0/3، 0/35 و 0/4) به عنوان فاکتور تاثیر گذار بررسی شد و مقاومت در 28 روز، به عنوان فاکتور پاسخ انتخاب شد. آزمونه‌‌‌ها در دمای 23 درجه سلسیوس و رطوبت 70% در کابین نم نگه‌‌‌داری شدند. نتایج نشان داد با بهینه فاکتور مدول سیلیس 1/1، فاکتور نسبت آب به جامد 0/25 و فاکتور درصد افزودنی 15%، به میانگین مقاومت فشاری 81/24 مگاپاسکال می‌‌توان دست یافت، که بالاتر از مقاومت فشاری خمیر سیمان‌‌های پرتلند معمولی می‌‌باشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Optimizing the mechanical properties of geopolymer paste containing calcined clay and Dust clinker by Taguchi method

نویسندگان [English]

  • ali reza rezvani
  • sania saheli
  • abouzar Jalal kamali
Department of Chemistry, University of Sistan and Baluche stan, Zaheda n, Iran.
چکیده [English]

Given that environmental pollution is one of the major concerns in today’s societies, geopolymer cement is an innovative material in the construction industry with high performance and favorable efficiency. The production of geopolymer cement using pozzolans and aluminosilicate wastes, which are environmentally friendly, can serve as an alternative to conventional concrete production, addressing the pollution associated with Ordinary Portland Cement (OPC) production. This research focuses on synthesizing geopolymer cement based on calcined clay from the Bidester region in Khash City, enhancing its mechanical strength by adding fine clinker from rotary kilns. The experiments were designed using the Taguchi method. Taguchi’s L16 array was proposed, and 16 experiments were designed. The Al/Na ratio was set at one. Various levels of silica modulus of the activating solution (0, 0.9, 1, and 1.1), the percentage of fine clinker addition (0, 5, 10, and 15), and the water-to-solid ratio (0.25, 0.3, 0.35, and 0.4) were assessed as influencing factors, with the a28-day strength as the response factor. Samples were maintained under 70% humidity at 23°C in a humidity cabinet. Results indicated that with optimal factors of a silica modulus of 1.1, a water-to-solid ratio of 0.25, and a 15% additive percentage, an average compressive strength of 81.24 MPa can be achieved, exceeding that of conventional OPC paste.

کلیدواژه‌ها [English]

  • Geopolymer Synthesis
  • Calcined Clay
  • Fine Clinker
  • Taguchi
  • Green Cement

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نشریه مهندسی عمران امیرکبیر
دوره 57، شماره 2
1404
صفحه 247-270

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