DOI: 10.7569/JRM.2017.634135
M.Cˇ ekon et al.: Cardboard-Based Packaging Materials as Renewable Thermal Insulation of Buildings
in [8] and [9], who evaluated the thermal, acoustic and environmental performance of single- and mul- tilayer CFB and cellulose samples. Also related is the work of Secchi et al. [10], who investigated the acous- tic and environmental performance of several card- board- or cellulose-based acoustic panels. These three works show that CBMs are an interesting alternative to the common insulation materials. However, there is another approach regarding the evaluation of envi- ronmental impacts that has been implemented, which is detailed in this study. The aim of this article is the evaluation of the thermal and environmental performance of selected CFB and HFB samples and their comparison with contemporary common insulation materials. Polyisocyanurate foam (PIR), expanded polystyrene (EPS) and mineral wool (MW) were selected as representatives of common contemporary insulation materials for the comparison. 2 EVALUATED MATERIALS The main focus of this article lies in the evaluation of the thermal and environmental properties of the CBMs. This material is already well known in the packaging industry. Applications in the building industry also exist. CBM panels can be lightweight and structurally sound. They are commonly used for production of furniture, door wings or as a lightweight load-bearing substructure for decorative elements. Asdrubali et al. [8] propose their use as acoustic insulation. The CBMs exist in different forms. This article eval- uates samples of the two most common forms. The first is called corrugated fiberboard (CFB) or pleated card- board. It consists of a fluted corrugated sheet, which provides structural stiffness. This sheet can be covered with flat cardboard sheets on one or both sides. The CFB has been in use for a long time. It was patented in the 19th century [11]. The other evaluated form is hon- eycomb fiberboard (HFB). It uses a honeycomb struc- ture with tubular or hexagonal shaped cells. Again, it can be covered with flat cardboard sheets. The sand- wich structure with air cavities enclosed in the card- board is essential for the CBMs thermal and acoustic properties. From an environmental point of view, the CBMs are interesting due to the possible use of sec- ondary raw materials for their production. Recycling of CBMs is also rather simple. Such avoided depletion of primary raw materials should lead to a relatively low environmental profile of the material [10]. The analysis described in this article evaluates the thermal and environmental properties of seven CBM samples (M1 to M7) and compares them with PIR (sample M8), EPS (sample M9) and MW (sample M10). All samples are shown in Figures 1 and 2.
M1
M2
M3
M4
Figure 1 CFB and HFB samples M1 to M4 used in the thermal analysis.
M5
M6
M7
M8
M9
M10
Figure 2 CFB and HFB samples M5 and M6 used in the thermal analysis, HFB sample M7, and conventional thermal insulation samples M8 (PIR), M9 (EPS) and M10 (MW).
J. Renew. Mater. Supplement June 2017
85
CC BY-NC-ND - Creative Commons
Made with FlippingBook Digital Publishing Software