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ارائه طرح ملات ترمیمی کارآمد حاوی میکروسیلیس و الیاف ترکیبی با ارزیابی مقاومت فشاری و خمشی | ||
| نشریه مهندسی عمران و محیط زیست | ||
| مقاله 10، دوره 55، شماره 119، شهریور 1404، صفحه 125-134 اصل مقاله (3.22 M) | ||
| نوع مقاله: مقاله کامل پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/ceej.2024.59658.2310 | ||
| نویسندگان | ||
| سینا اسدالهی؛ محمدرضا عالمیان؛ مهدی دهستانی* | ||
| دانشکده مهندسی عمران، دانشگاه صنعتی نوشیروانی، بابل | ||
| چکیده | ||
| بسیاری از سازههای بتنی موجود در جهان به پایان عمر طراحی خود رسیدهاند و یا تحت بارهای مختلف دچار خرابیهای متعددی شدهاند. بنابراین، تقویت و ترمیم این سازهها برای جلوگیری از بازسازیهای پرهزینه و یا ساخت مجدد سازهها حیاتی است. به منظور ترمیم و مقاومسازی سطوح، بهبود عملکرد سازههای آسیبدیده و افزایش عمر بهرهبرداری سازههای بتنی از ملات ترمیمی استفاده میشود. در این تحقیق با بهرهگیری از روش طرح آزمایشگاهی تاگوچی (Taguchi)، طرح اختلاطهای مختلفی برای ملات ترمیمی حاوی الیافهای ترکیبی، میکروسیلیس و چسب لاتکس در نسبتهای مختلف آب به ماده سیمانی و ماده سیمانی به ماسه در نظر گرفته شده است. هدف از تحقیق حاضر، ارزیابی مقاومت فشاری و خمشی یک ملات ترمیمی کارآمد حاوی میکروسیلیس و الیاف ترکیبی است. براساس نتایج بدست آمده، مشاهده شد کارآمدترین مقاومت خمشی و فشاری ملات ترمیمی زمانی بدست میآید که طرح حاوی 10 درصد مقدار میکروسیلیس و دو نوع الیاف فولادی و غیرفولادی (الیاف شیشهای و یا پلیاستر) با درصدهای متوسط باشد. نتایج آزمایشگاهی نمونههای خمشی بخوبی نشان داد که با پلزدن ترکیبی الیافها مقاومت بطور قابل قبولی افزایش یافته است. | ||
| کلیدواژهها | ||
| ملات ترمیمی؛ کارآمدی؛ مقاومت فشاری؛ مقاومت خمشی؛ الگوریتم تاگوچی | ||
| مراجع | ||
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