The long-term compressive strength and durability properties of silica fume fiber-reinforced concrete

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• 作者：Mahmoud Nili ; ^{nili36@yahoo.co.uk} ; V. Afroughsabet
• 关键词：Fiber reinforced concrete ; Polypropylene fibers ; Silica fume ; Concrete properties
• 刊名：Materials Science and Engineering: A
• 出版年：2012
• 出版时间：1 January 2012
• 年：2012
• 卷：531
• 期：Complete
• 页码：107-111
• 全文大小：278 K

文摘

The long-term compressive strength and durability properties of concrete specimens produced by incorporating polypropylene fibers and silica fume were investigated. Silica fume, a cement replacement, was used at 8 % (by weight of cement) and the volume fractions of the polypropylene fibers were 0 % , 0.2 % , 0.3 % and 0.5 % . Water-binder ratios were 0.46 and 0.36. The results indicate that the inclusion of fiber and particularly silica fume into the specimens led to an increased long-term compressive strength. Electrical resistance of the silica fume specimens improved remarkably, but decreased slightly due to the fiber inclusion. Water absorption of the fiber-silica fume specimens decreased exclusively compared to the reference samples. Inclusion of fiber and silica fume into the specimens had no considerable effect on the dynamic frequency results.