Fly-ash cenosphere/clay blended composites for impact resistant tiles
| Autor: | V. Burke, A. G. Castellanos, Pavana Prabhakar, H. Mawson |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Base (chemistry) Composite number 0211 other engineering and technologies Structural integrity 02 engineering and technology Building and Construction 021001 nanoscience & nanotechnology Microstructure chemistry Cenosphere Fly ash visual_art 021105 building & construction Impact loading visual_art.visual_art_medium General Materials Science Tile Composite material 0210 nano-technology Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 156:307-313 |
| ISSN: | 0950-0618 |
| Popis: | In this paper, blended fly-ash cenospheres/clay composites are explored as potential material for roofing tiles. In view of impact on roofs during hailstorms, the goal is to improve the impact resistance of roofing tile materials. It is hypothesized that the impact damage resistance of tiles can be improved while reducing their densities by incorporating hollow fly-ash cenospheres with base clay. Towards that, four types of composites, namely clay, clay + filler, clay + fly-ash and clay + filler + fly-ash are fabricated and evaluated under dynamic impact loading with 1 J impact energy. Changes in microstructure, densities and degree of damage in the four types of composites are compared. The addition of fly-ash cenospheres appears to improve the structural integrity of the tiles by reducing gaps observed in clay tiles. The highest reduction in density is observed in clay + fly-ash composites of approximately 36% as compared to clay samples. Whereas, a reduction in the degree of damage of about 22% and 26% are observed in clay + fly-ash and clay + filler + fly-ash specimens, respectively. Even though clay + filler and clay + filler + fly-ash manifested higher peak forces and lower degree of damage than clay + fly-ash composite, the reduction of densities are only 3.48% for clay + filler and 29.85% for clay + filler + fly-ash. Therefore, a combined consideration of degree of damage and density of composites reveals that clay + fly-ash composites are superior as compared to clay and other composites investigated in this study. |
| Databáze: | OpenAIRE |
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