کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6740745 | 504364 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanical properties of structural bamboo following immersion in water
ترجمه فارسی عنوان
خواص مکانیکی بامبو ساختاری پس از غوطه وری در آب
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کلمات کلیدی
بامبو، ویژگی های مکانیکی، محتوای رطوبت، استحکام فشاری، مقاومت برشی، قدرت تقسیم،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Bamboo is widely used as scaffolding for which collapses, often associated with rain events, are not uncommon. The presented study quantifies the degradation of mechanical properties of bamboo samples following immersion in water for 1 and 7Â days to simulate the effects of significant rain events. Compression, longitudinal shear and splitting tests were conducted to obtain the respective strengths and moduli. The mechanical properties were observed to degrade significantly with increased moisture content (MC) up to about MCÂ =Â 30%, a value close to the expected fiber saturation point (FSP). Beyond MCÂ =Â 30%, further degradation, while apparent, was less significant. Immersion in water for one day was observed to be sufficient to achieve the FSP; under these conditions, compressive strength was observed to be 75% of that obtained from tests conducted at a standard 'air-dry' MCÂ =Â 12%. Accompanying the reduction in strength with increased MC, the bamboo was observed to transition from a relatively brittle behavior to a very ductile behavior. For scaffold applications, degradation of compression capacity is not only critical but also shown to be a conservative indicator for other mechanical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 81, 15 December 2014, Pages 230-239
Journal: Engineering Structures - Volume 81, 15 December 2014, Pages 230-239
نویسندگان
Qingfeng Xu, Kent Harries, Xiangmin Li, Qiong Liu, Jennifer Gottron,