| Autor: |
Zaharieva, Roumiana, Petrov, Boyan, Evlogiev, Daniel, Kostadinova, Magdalena, Simonov, Borislav |
| Zdroj: |
IOP Conference Series: Materials Science and Engineering; December 2024, Vol. 1323 Issue: 1 p012002-012002, 1p |
| Abstrakt: |
Construction and demolition waste (CDW) is a significant source of mineral resources. Recycled concrete aggregate fraction 0/63 mm is among the most used materials. The present study aims to evaluate the influence of impurities such as asphalt, bricks, soil, and lightweight materials on the properties of recycled aggregate. Two types of blended recycled materials are composed – one, representative for recycled aggregate from CDW generated at road projects and another type, representative for recycled materials from buildings rehabilitation and demolition. The main characteristics of blended recycled aggregate with different amounts of impurities are being investigated according to EN 13 242. The maximum dry density and optimum water content according to EN 13286-2 and the California Bearing Ratio (CBR) according to EN 13286-47 are also determined. The source of CDW is found to have a significant impact on the performance of the recycled material. The rule of mixtures and some testing methods are not always appropriate for the recycled materials. Based on the results, some recommendations regarding the management of CDW and the appropriate use of recycled aggregates in civil engineering and road construction are made. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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