کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
275054 507524 2016 5 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Macroscopic and microscopic fracture features of concrete used in coal mine under chlorine salt erosion
ترجمه فارسی عنوان
ویژگی های شکستگی ماکروسکوپی و میکروسکوپی بتن در معدن زغال سنگ تحت کلر فرسایش نمک استفاده می شود
کلمات کلیدی
بتن؛ کلر فرسایش نمک؛ مشخصه مزوسکوپیک؛ شکستگی آسیب
Concrete; Chlorine salt erosion; Mesoscopic characteristic; Damage fracture
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
چکیده انگلیسی

The microscopic morphology and pore structure characteristics of concrete with composite admixtures (fly ash and mineral powder) after chlorine salt erosion were analyzed via scanning electron microscopy (SEM) and mercury injection porosimetry (MIP), providing the basis for the design and maintenance of concrete shafts in coal mines. The above-mentioned characteristics were compared with the macroscopic characteristic of concrete fractures under uniaxial compression. The results show that the macroscopic fracture characteristics of concrete under uniaxial compression change from longitudinal split fracture and oblique section shear fracture to conjugate cant fracture, and the degree of breakage increases. Interface cracks, cement paste cracks, spherical surface cracks, and aggregate cracks appear in concrete under uniaxial compression. In the early stages of corrosion, the original cracks which are obvious are repaired. When the corrosion becomes more serious, cement paste cracks appear, and the number of harmful holes increases while the number of harmless holes decreases. This study also reveals the relationship between the macroscopic properties and microscopic structure of concrete under chloride salt erosion. Finally, the paper preliminarily discussed the relationship between the macroscopic properties and mesoscopic characteristics of concrete under chlorine salt erosion.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mining Science and Technology - Volume 26, Issue 3, May 2016, Pages 455–459
نویسندگان
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