کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6712165 1428724 2018 15 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical properties of hybrid short fibers reinforced oil well cement by polyester fiber and calcium carbonate whisker
ترجمه فارسی عنوان
خواص مکانیکی فیبرهای ترکیبی هیبرید تقویت شده سیمان چاه نفتی توسط فیبر پلی استر و سیلندر کربنات کلسیم
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موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
In the present work, a novel fiber hybridization containing PET fiber and CaCO3 whisker is developed to improve the multiscale cracking resistance, as well as to boost the toughness and mechanical performance of cement pastes. The mechanical properties, microstructure, the uniaxial and triaxial compression of hybrid fiber reinforced oil well cement pastes are investigated. The results indicate that after the introduction of mono PET fiber, the flexible strength and tensile strength were increased by 19.4% and 40.1%, but the compressive strength was decreased by 11.5%. Therefore, the CaCO3 whisker combined with the PET fiber is used to enhance the compressive strength of the cement matrix. Because PET fibers and CaCO3 whiskers are different in size, elasticity modulus and length-diameter ratio, the hybrid fiber can effectively interact with micro to macro cracks at multiple load stages. Hence, the hybridization contributes to enhancing multiscale cracking resistance from the microscale to the macroscale level, and the capability coefficients index of the cementious material are improved by 450.7% and 284.5% compared with those of control samples, respectively, under confining pressure. Moreover, the strategy enables to reduce the production cost of the cementing sheath of oil and gas well, and other large-scale construction project applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 182, 10 September 2018, Pages 258-272
نویسندگان
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