M. Cˇ ekon et al.: Cardboard-Based Packaging Materials as Renewable Thermal Insulation of Buildings
DOI: 10.7569/JRM.2017.634135
have the best thermal performance. In particular, sam- ple M2 combining multiple layers of CFB has thermal parameters comparable with contemporary common thermal insulations. The presented LCAs show that from an environ- mental point of view the CBMs are an interesting option comparable with other contemporary thermal insulations. Based on the results we can conclude that CBMs have significantly better environmental impacts than PIR. Most of the tested samples also achieved lower environmental impacts than MW, although the differences are lower compared to PIR: between −38% (sample M3) and +67% (sample M7). On the other hand, we have to highlight the fact that none of the tested CBMs have lower environmental impacts than EPS. The difference is between 12% (sample M6) and 67% (sample M7). Further research and development in the field of CBM insulations should focus on multilayer sandwich structures with smaller air cavities. These proved to have the best thermal properties. However, the increased number of layers should not cause a sig- nificant increase of environmental impacts. The use of recycling and secondary raw materials should be promoted as most of the environmental impacts are related to the consumption of natural resources. Case studies created in cooperation with producers of CBMs are necessary. Such case studies will improve the accu- racy of existing results. The case studies should also address the topic of additives that can improve the properties of the CBMs: fire resistance, water resis- tance, durability and load-bearing capacity. A cost analysis is also necessary to address the question of return on possible investments. Equilibrium between improving the properties of the CBM, its environmen- tal qualities and costs should be the final aim of all fur- ther works. ACKNOWLEDGMENT This research was supported by the project GA 16-02430Y “Contemporary concepts of climatically active solar façades integrating advanced material solutions,” supported by the Czech Science Foundation and under project No. LO1408 “AdMaS UP – advanced materials, structures and technologies,” supported by the Ministry of Education, Youth and Sports under the National Sustainability Programme I. REFERENCES 1. United Nations Framework Convention on Climate Change, The Paris Agreement, http://unfccc.int/paris_ agreement/items/9485.php (2016).
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