engleski

Energy Efficiency Aspects of Recycled Aggregate Concrete

One of the basic sustainability targets specified in Agenda 21 for Sustainable Construction is reduction of non-renewable raw material consumption. Since concrete is widely used construction material and has significant impact on the environment, it opens unexplored area of possibilities for improving concrete industry and its reorientation to the sustainability. Huge potential lies in construction and demolition waste (CDW) which makes 25-30% of all waste generated in the EU. Intensive research activities have been carried out in recycling and reusing of CDW, especially in application of recycled concrete and brick aggregates as replacement of natural aggregates in concrete mixes. On the other hand, most buildings are ‘sub-standard’ in terms of energy efficiency, comfort and health. Buildings account for the largest share of the total EU final energy consumption producing about 40% of greenhouse gas emissions during their service life. This paper shows application of recycled aggregate concrete in energy efficient innovative ventilated prefabricated concrete wall panel with integrated Ecose® mineral wool insulation: ECO-SANDWICH®. Special emphasis is given on the research conducted regarding thermal properties of sustainable concrete with high inclusion levels of recycled concrete and brick aggregate, together with sound insulation properties of ECO-SANDWICH® panels, all with respect to similar products.

prefabricated concrete wall panel; recycled aggregates; embodied energy; nearly zero energy buildings; ventilated cross section

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