دانلود مقاله ISI انگلیسی شماره 122825
کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
122825 2017 37 صفحه PDF سفارش دهید محاسبه نشده
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عنوان انگلیسی
Mechanical performance of novel cement-based composites prepared with nano-fibres, and hybrid nano- and micro-fibres
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Composite Structures, Volume 178, 15 October 2017, Pages 145-156

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چکیده انگلیسی

Use of hybrid fibre composites that exploit the synergistic effect of nano- and micro-additives can potentially lead to significant improvements in the toughness and mechanical properties of fibre reinforced cementitious materials. In this study, the mechanical properties of two types of novel cementitious composite (Carbon Nano-Fibre (CNF) Composites, and Hybrid-Fibre Composites) at various curing ages have been evaluated, along with their microstructure. Experimental results show a positive impact of nano-fibres on the mechanical performance of the cementitious composites: improvements of 40% in flexural strength, 45% in tensile strength, and 85% in toughness were observed when a low mass % (0.025%) of CNFs was combined with steel fibres. SEM observations revealed that reinforcement at the nanoscale prevented nano-crack development within the composites, with a greater amount of energy required to initiate and propagate cracks and cause material failure.

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