Journal ArticleDOI
Microstructural and Mechanical Effects of Latex, Methylcellulose, and Silica Fume on Carbon Fiber Reinforced Cement
Po-Hsiu Chen,X. Fu,D.D.L. Chung +2 more
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TLDR
In this article, the effect of methylcellulose, silica fume, and latex on the degree of dispersion of short carbon fibers in cement paste was assessed, as indicated by the ratio of the measured volume of electrical conductivity to the calculated value.Abstract:
The effect of methylcellulose, silica fume, and latex on the degree of dispersion of short carbon fibers in cement paste was assessed. This degree, as indicated by the ratio of the measured volume of electrical conductivity to the calculated value, and the effectiveness of the fibers in enhancing the tensile/flexural properties attained by using methylcellulose and silica fume were higher than those attained by using methylcellulose alone or latex. Methylcellulose was superior to latex in giving a high degree of fiber dispersion at fiber volume fractions < 1 percent, as measured by this technique. Latex resulted in superior tensile-flexural properties and lower content and size of air voids than methylcellulose. With the fiber content fixed at 0.53 vol. percent, the degree of fiber dispersion, as measured by this technique, decreased with increasing latex-cement ratio. As a result the flexural toughness decreased monotonically with increasing latex-cement ratio and the flexural strength attained a maximum at an intermediate latex-cement ratio of 0.15. In contrast, both flexural toughness and strength increased monotonically with increasing latex-cement ratio when fibers were absent.read more
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Fiber-reinforced asphalt-concrete – A review
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Journal ArticleDOI
Cement reinforced with short carbon fibers: a multifunctional material
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Ozone treatment of carbon fiber for reinforcing cement
Xuli Fu,Weiming Lu,D.D.L. Chung +2 more
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Journal ArticleDOI
Dispersion of Short Fibers in Cement
TL;DR: In this paper, the degree of dispersion of short microfibers in cement, as assessed by electrical resistivity measurement for the case of electrically conductive fibers at a volume fraction below the percolation threshold, is improved by the use of admixtures (namely, silica fume, acrylic particle dispersion, methylcellulose solution, and silane) and fiber surface treatment (such as ozone treatment).
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