مدلسازی عوامل تاثیر گذار بر مقاومت فشاری و چگالی خشک بلوک (AAC) با استفاده از روش RSM

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی معدن، دانشگاه صنعتی سهند، تبریز، ایران

2 دانشکده مهندسی مواد، دانشگاه جامع علمی کاربردی، مرند، ایران

چکیده

این مطالعه به بررسی عوامل مؤثر بر مقاومت فشاری و چگالی خشک بلوک‌های بتن هوادهی اتوکلاو شده (AAC) با استفاده از روش طراحی سطح پاسخ (RSM) پرداخته است. خلوص سیلیس، مقدار آب مصرفی، و اندازه ذرات به‌عنوان پارامترهای اصلی در طراحی آزمایش در نظر گرفته شدند. نتایج نشان داد که خلوص بالاتر سیلیس باعث افزایش مقاومت فشاری و چگالی محصول به ترتیب تا 76/26 درصد و 1/4 درصد می‌شود. در مقابل، افزایش مقدار آب مصرفی منجر به کاهش 31/16 درصدی مقاومت فشاری شد و همچنین تأثیری بر کاهش یا تغییر چگالی مشاهده گردید. اندازه ذرات در محدوده بررسی‌شده، تأثیری معنادار بر مقاومت فشاری نداشت اما افزایش اندازه ذرات به دلیل کاهش تخلخل، چگالی بلوک را افزایش داد. با استفاده از روش بهینه‌سازی RSM، مشخص شد که ترکیب بهینه شامل سیلیس با خلوص بالا، مقدار آب در سطح متوسط (636 سی سی) و اندازه ذرات کوچک (d80 = 55µm) منجر به دستیابی به بیشترین مقاومت فشاری (236.37 کیلوگرم بر سانتی‌متر مربع) و کمترین چگالی (535.63 گرم بر سانتی‌متر مکعب) می‌شود. این پژوهش اهمیت کیفیت مواد اولیه، به‌ویژه خلوص سیلیس و کنترل ترکیب اختلاط را در بهبود خواص مکانیکی و فیزیکی بلوک‌های AAC نشان داده و راهکارهایی برای تولید محصولات با عملکرد بهتر در صنعت ساختمان ارائه می‌کند. یافته‌های این تحقیق می‌تواند به کاهش هزینه‌ها و افزایش کارایی مواد سبک‌وزن در ساخت‌وساز کمک کند

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Modeling the Factors Affecting Compressive Strength and Dry Density of Block (AAC) Using RSM Method

نویسندگان [English]

  • Amir Mabudi 1
  • Seyed Mohsen Zamzami 1
  • Faramarz Pashayi 2
1 Department of Mining Engineering, Sahand University of Technology, Tabriz, Iran
2 Department of Materials Engineering, University of Applied Sciences, Marand, Iran
چکیده [English]

This study investigates the factors influencing the compressive strength and dry density of autoclaved aerated concrete (AAC) blocks using the Response Surface Methodology (RSM). Silica purity, water content, and particle size were considered as the primary parameters in the experimental design. The results indicated that higher silica purity increases the compressive strength and product density by 26.76% and 4.1%, respectively. Conversely, increasing water content resulted in a 16.31% reduction in compressive strength, with negligible effects on density changes. Particle size showed no significant impact on compressive strength within the studied range; however, larger particles increased density due to reduced porosity. RSM optimization revealed that the optimal combination—high-purity silica, medium water content (636d cc), and small particle size (d80 = 55 µm)—achieved the highest compressive strength (236.37 kg/cm²) and the lowest density (535.63 g/cm³). This research highlights the critical role of raw material quality, particularly silica purity, and precise mix control in enhancing the mechanical and physical properties of AAC blocks. The findings provide practical solutions for producing higher-performing AAC products, contributing to cost reduction and improved efficiency in lightweight construction materials.

کلیدواژه‌ها [English]

  • Compressive strength
  • Dry density
  • Autoclaved Aerated Concrete (AAC)
  • Silica purity
  • Response Surface Methodology (RSM)
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دوره 23، شماره ویژه 81
جشن پنجاهمین سالگرد تاسیس دانشگاه سمنان- در حال تکمیل شدن
تیر 1404
صفحه 235-247
  • تاریخ دریافت: 28 اردیبهشت 1403
  • تاریخ بازنگری: 12 دی 1403
  • تاریخ پذیرش: 17 دی 1403