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Title |
Mechanical Properties in Rice Husk Ash and OPC Concrete with Coconut Fiber Addition Ratios
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Authors |
이민희(Min-Hi Lee) ; 권성준(Seung-Jun Kwon) ; 박기태(Ki-Tae Park) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.2.117 |
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Keywords |
RHA ; 코코넛 섬유 ; 균열 ; 압축강도 ; 성능개선 Rice ash husk ; Coconut fiber ; Crack ; Compressive strength ; Performance improvement |
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Abstract |
Currently, Eco-friendly construction materials are widely utilized for reducing CO2 emission in construction. Furthermore various engineering fibers are also added for improving a brittle behavior in concrete. In the paper, concrete specimens with 10% and 20% replacement ratio with RHA (Rice Husk Ash) are prepared, and engineering behaviors in RHA and OPC concrete are evaluated with different addition of coconut fiber from 0.125~0.375% of volume ratio. Several basic tests including compressive strength, tensile strength, flexural strength, impact resistance, and bond strength are performed, and crack width and deflections are also measured in flexural test. RHA is evaluated to be very effective in strength development and 0.125% of fiber addition leads significant improvement in tensile strength, ductility, and crack resistance. RHA and coconut fiber are effective construction material both for reutilization of limited resources and performance improvement in normal concrete.
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