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THERMAL BEHAVIOUR OF PLASTER COMPOUNDS WITH PLASTIC CABLES WASTE ADDITIVE
Alejandra Vidales Barriguete, Mercedes del Río Merino, Evangelina Atanes Sánchez, Carolina Piña Ramírez, Aránzazu Galán González
Keywords: Plaster compounds, Plastic waste, Thermal properties, Recycling, Construction waste 1. Introduction
One of the main focus of construction material’s industries is achieving sustainability, economic progress and social welfare (Gómez-Zamorano, Iñiguez-Sánchez, & Lothenbach, 2015). The use of alternative materials --which covers both the study and the development of their properties -- is one of the most important factors in the evolution of the construction sector (San-Antonio González, Río Merino, & Viñas Arrebola, 2013).
On the other hand, the production of large quantities of waste is generally linked to the current "throw-away" society. However, the capacity to dispose this waste is decreasing. Therefore, it is essential to influence the proper management of waste leading to procedures that transform it into a generating resource, in order to minimize the amount and reduce the use of raw materials (Jiménez Rivero, Guzmán Báez, Garcia Navarro, & González Cortina, 2011).
In this respect, the addition of waste in the so-called "traditional materials" becomes -- for materials manufacturers-- an alternative to achieve environmental sustainability indicators. This paper presents the obtained results of the study performed in the addition of plastic waste cables in gypsum matrices based in the Waste Framework Directive 2008/98/CE that prioritizes the prevention and reuse against the elimination and recovery of waste (del Río Merino, Garcia Navarro, & Villoria Saez, 2011).
2. Materials and methods
The matrix used was Placo Iberyola plaster, manufactured in San Martin de la Vega (Madrid), with European denomination A, fast setting and granulometry of 0-2 mm; the plastic waste (PR) is obtained at Lyrsa Álava recycling company after the cable recycling process. This added PR -- with a maximum particle size of 3 mm -- is easily obtained from the recycling plant and is composed of a heterogeneous mixture of thermoplastic and thermostable polymers (Barriguete, del Río Merino, Sánchez, Ramírez, & Arrebola, 2018). The PR is added to the plaster mix in three different percentages of 50% -60% -70% with a water/plaster ratio of 0.8. Subsequently the data obtained in the tests is analysed and compared with the values previously obtained in the reference specimens (without PR). All the specimens are manufactured according to the UNE EN 13279-2 (102, 2014).
Figure 3. Plastic Residue addition to plaster mix in 50%, 60% and 70%
Initially, the thermal conductivity coefficient was determined using the modified transient flat-bed
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