کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
258198 503613 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strength and fracture energy characteristics of self-consolidating concrete incorporating polyvinyl alcohol, steel and hybrid fibres
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Strength and fracture energy characteristics of self-consolidating concrete incorporating polyvinyl alcohol, steel and hybrid fibres
چکیده انگلیسی


• Presents properties of fibre reinforced self-consolidating concrete (FRSCC).
• Metallic and polyvinyl alcohol (PVA) fibres are used in FRSCC.
• FRSCC flowability and passing ability decrease with the increase of fibre volume.
• Metallic fibres are more effective in improving FRSCC strength and fracture energy.
• Recommendations will be useful for the manufacturing and construction industries.

Fibre-reinforced self-consolidating concrete (FRSCC) combines the advantages of self-consolidating concrete (SCC) and fibre-reinforced concrete (FRC). In this study, 18 concrete mixtures were developed by incorporating different volumes of polyvinyl alcohol (PVA) and metallic fibres to a maximum of 0.3% by volume. Fresh, mechanical and durability (in terms of chloride penetration resistance) properties of all FRSCC mixtures were evaluated. The influence of fibre type/size/dosage and combination (used in hybrid mixes) on fresh properties (slump flow, L-box passing ability, V-funnel flow time and segregation index) and hardened properties (fracture energy and compressive/flexural/splitting tensile strength) were critically analyzed to study the performance of the FRSCC mixtures. The fibres – metallic ones in particular – were more effective in increasing the fracture energy of FRSCC than in increasing its compressive/splitting tensile/flexural strength. A substantial fracture energy gain of about 507% was observed compared to a 10% increase in compressive strength, a 39% gain in splitting tensile strength and a 124% increase in flexural strength. The improved strength and fracture energy of such FRSCC mixtures can significantly reduce the amount of tensile reinforcement required and substantially increase the energy-absorbing capacity of concrete structures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 45, August 2013, Pages 20–29
نویسندگان
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