Research Article
Mechanical Properties of SiO2-Coated Carbon Fiber-Reinforced Mortar Composites with Different Fiber Lengths and Fiber Volume Fractions
Figure 4
Surface topography of carbon fibers (20000 times): (a) uncoated carbon fiber, (b) nitric acid-treated carbon fiber, and (c) SiO2-coated carbon fiber.
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| (b) |
| (c) |