Effect of waste rice husk ash on structural, thermal and run-off properties of clay roof tiles
| Autor: | G.H.M.J. Subashi De Silva, M.L.C. Surangi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Absorption of water Waste management Industrial scale 0211 other engineering and technologies 02 engineering and technology Building and Construction 021001 nanoscience & nanotechnology Pulp and paper industry Bulk density Husk visual_art 021105 building & construction Thermal visual_art.visual_art_medium General Materials Science Tile 0210 nano-technology Surface runoff Roof Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 154:251-257 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2017.07.169 |
| Popis: | Rice Husk Ash (RHA), a waste from firing process of clay products, has no proper usage. For this study, roof tile specimens were manufactured by replacing clay with different RHA percentages (i.e., 0%, 5%, 10%, 15% and 20%) in an industrial scale plant, so as to determine the effect of waste RHA from a brick firing process on structural, thermal properties and run-off qualities of clay roof tiles. For 10% replacement of clay with RHA, transverse breaking load was increased by 45.97% indicating higher ductility compared with that of the conventional tiles. Bulk density is reduced with the percentage of RHA added, promising a light-weight roof tile, a favourable tile for a roofing material. With increasing RHA content, water absorption increases. RHA replacement up to 15% is desirable, satisfying the water absorption limit according to standards. RHA replacement up to 20% doesn’t affect on the water penetration property. RHA mixed roof tiles can reduce the indoor temperature, feeling more comfortable for inhabitants. Collected runoff coming along the 10% RHA mixed clay roof tiles has a pH value of 7.22 and total solid concentration of 118.67 mg/L, indicating RHA mixed roof clay tile will not cause any severe impact on the runoff. Hence this harvested runoff can still be utilized for non-potable activities while enhancing the strength and thermal properties of clay roof tiles. |
| Databáze: | OpenAIRE |
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