Design and production of industrial components and materials are nowadays a compromise between the required performances and the environmental impact. In the case of structural concrete, the existing eco- logical approaches are mainly focused on sustainability, regardless of mechanical performances. Tailoring a new generation of concretes, capable of maintaining acceptable mechanical properties with a reduced ecological impact, is therefore the big challenge that construction industry has to face. Accordingly, new instruments, based on both mechanical and environmental performances, need to be introduced in place of the classical life cycle assessment procedure. This is the case of the so-called eco-mechanical index (EMI), described in the present paper and applied to different series of plain and fiber-reinforced self- compacting concretes. The basic mechanical properties, such as compression and flexural strengths, and the related post-peak curves, are taken into account by the proposed EMI. Conversely, water, embod- ied energy consumption and the amount of carbon dioxide, necessary for the production of concrete, are here assumed to represent the environmental performance. As a result, in presence of fiber-reinforced concrete, despite the higher ecological impact than plain concrete, the best eco-mechanical performances are generally measured at each stage of concrete life.
Eco-mechanical index for structural concrete / Chiaia, Bernardino; Fantilli, ALESSANDRO PASQUALE; A., Guerini; G., Volpatti; D., Zampini. - In: CONSTRUCTION AND BUILDING MATERIALS. - ISSN 0950-0618. - STAMPA. - 67:(2014), pp. 386-392. [10.1016/j.conbuildmat.2013.12.090]
Eco-mechanical index for structural concrete
CHIAIA, Bernardino;FANTILLI, ALESSANDRO PASQUALE;
2014
Abstract
Design and production of industrial components and materials are nowadays a compromise between the required performances and the environmental impact. In the case of structural concrete, the existing eco- logical approaches are mainly focused on sustainability, regardless of mechanical performances. Tailoring a new generation of concretes, capable of maintaining acceptable mechanical properties with a reduced ecological impact, is therefore the big challenge that construction industry has to face. Accordingly, new instruments, based on both mechanical and environmental performances, need to be introduced in place of the classical life cycle assessment procedure. This is the case of the so-called eco-mechanical index (EMI), described in the present paper and applied to different series of plain and fiber-reinforced self- compacting concretes. The basic mechanical properties, such as compression and flexural strengths, and the related post-peak curves, are taken into account by the proposed EMI. Conversely, water, embod- ied energy consumption and the amount of carbon dioxide, necessary for the production of concrete, are here assumed to represent the environmental performance. As a result, in presence of fiber-reinforced concrete, despite the higher ecological impact than plain concrete, the best eco-mechanical performances are generally measured at each stage of concrete life.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2560965
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