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مطالعه آزمایشگاهی تأثیر سن، دما و میزان الیاف بر رفتار باتارد مسلح دوستدار محیطزیست | ||
نشریه مهندسی عمران و محیط زیست دانشگاه تبریز | ||
مقاله 6، دوره 53.2، شماره 111، شهریور 1402، صفحه 61-75 اصل مقاله (894.84 K) | ||
نوع مقاله: مقاله کامل پژوهشی | ||
شناسه دیجیتال (DOI): 10.22034/jcee.2022.47612.2068 | ||
نویسندگان | ||
محمدمصطفی جعفری* 1؛ محمدحسین باقری پور2 | ||
1گروه مهندسی عمران، دانشگاه فنی و حرفه ای، تهران | ||
2گروه مهندسی عمران، دانشکده فنی و مهندسی، دانشگاه شهید باهنرکرمان | ||
چکیده | ||
از نقایص تثبیت خاک با آهک میتوان به کاهش مقاومت در اثر اشباع شدن و رفتار نامطلوب ترد آن اشاره نمود. که آنها را میتوان به ترتیب با استفاده از سیمان در کنار آهک (باتارد) (Bastard mortar) و نیز تسلیح باتارد به کمک الیاف برطرف نمود. در پژوهش حاضر نمونه هایی با درصد الیاف مختلف جهت آزمایش مقاومت فشاری تک محوری، به منظور بررسی تأثیر سن، درجه حرارت عمل آوری و میزان الیاف به عنوان تعدادی از عوامل تأثیرگذار بر پارامترهای ژئوتکنیکی باتارد مسلح، ساخته شد. این نمونهها در سنین و دماهای مختلف، عمل آوری و تست شده و پارامترهای متعددی از آنها نظیر: مقاومت فشاری تک محوری، مدول الاستیسیته (Modulus of elasticity) و ... محاسبه گردید. نتایج نشان داد که واکنشهای پوزولانی، سن و درجه حرارت عمل آوری نقش مؤثری در بالا بردن پارامترهای مقاومتی نمونهها داشته و وجود الیاف نیز نقش مهمی در شکل پذیر کردن رفتار نمونهها دارند به طور مثال کرنش گسیختگی در نمونه های سه روزه مسلح با %5/2 الیاف، 75/1 برابر نمونه های سه روزه فاقد الیاف مشاهده شد. مدول الاستیسیته نمونه هایی که 21 روز و در دمای oC60 عمل آوری شده اند بیش از 3 برابر مقدار متناظر در نمونه های 14 روزه عمل آوری شده در دمای oC30 است. | ||
کلیدواژهها | ||
باتارد مسلح؛ سن عمل آوری؛ الیاف لاستیک بازیافتی؛ مقاومت فشاری تک محوری؛ مدول الاستیسیته | ||
سایر فایل های مرتبط با مقاله
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مراجع | ||
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