Experimental investigation of the utilization of quarry dust for the production of microcement-based building elements by self-flowing molding casting
| Autor: | George Alevizos, Emmanouel Steiakakis, Konstantinos Komnitsas, Michael Galetakis, Athanasia Soultana, Christina Piperidi, Anthoula Vasiliou |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Cement
Absorption of water Aggregate (composite) Waste management business.industry 0211 other engineering and technologies 02 engineering and technology Building and Construction engineering.material 021001 nanoscience & nanotechnology Molding (decorative) Asphalt concrete Compressive strength Casting (metalworking) Filler (materials) 021105 building & construction engineering General Materials Science 0210 nano-technology business Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 107:247-254 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2016.01.014 |
| Popis: | The management and disposal of fine by-products produced by the aggregate industry, ready-mix concrete and asphalt concrete installations (also known as filler or quarry dust), emerges as a major environmental problem of quarrying and construction sector. Even though considerable research has been undertaken for the utilization of this fine by-product in several applications, it still remains under-utilized, while its disposal and stabilization is also problematic due to resulting emissions of airborne particle pollutants. In this study the production of self-flowing castable cement-based building elements incorporating high amounts of quarry dust was investigated in laboratory scale. Quarry dust, microcement, water and concrete admixtures were mixed and casted in steel molds for the production of the specimens. The initial study of mixtures composition was based on the Andreassen particle packing model, while the final mix design was determined via Box–Behnken fractional factorial design of experiments, in combination with the response surface method. The compressive strength and water absorption values of hardened specimens exceed the relevant technical requirements currently in force, regarding load-bearing as well as decorative building elements, thus opening a new promising field for the utilization of this by-product. |
| Databáze: | OpenAIRE |
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