To determine how the surface modification of mica influences flexural strength and fracture toughness of mica-relnforced cement composites, mica was treated with HF acid and three coupling agents: two silanes (CVBS, yMPS) and a titanate (IDT). Significant increases in mechanical properties resulted,
Properties of portland cement paste reinforced with mica flakes
โ Scribed by J.J. Beaudoin
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 426 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0008-8846
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โฆ Synopsis
Results of an investigation of the use of high-aspect-ratlo mica flakes in hardened portland cement matrices are reported.
Increases in flexural strength by a factor of 2 and in fracture toughness by a factor of 4, depending on matrix porosity, are obtained by the addition of small amounts of mica.
The dependence of these properties on matrix porosity is determined and the effect of mica flake addition on matrix characteristics discussed, e.g., porosity, surface area, non-evaporable water content.
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