Researchers at the Polytechnic University of Madrid have developed a new gypsum product that can absorb plastic waste from cables. The properties of these compounds can not only promote the circular economy by recycling waste, but also improve the building’s resistance to the external effects of water.
One of the most worrying waste today is plastic, Exists in all areas of our lives.inside put up, Its characteristics make it an indispensable material. In fact, more than 20% of the plastics produced are used in this industry, equivalent to about 10 million tons per year, which will be converted into plastics. waste, According to the indicators of the European Plastic Manufacturers Association European Plastics.
Although there are many methods and techniques available for recycle and re-use For plastics, usually the various existing types on the market will complicate any of these conversion processes. An example of this is the recycling of cables, in which metals are completely recycled and plastic waste is incinerated or sent to landfills.
From Construction Vocational and Technical College From Madrid University of Technology (UPM) analyzed the characteristics of these materials to use them as secondary raw materials in panels and gypsum boards to replace existing building products. The results show that the gypsum compound in plastic cable waste helps protect the building from water.
In this way, researchers are committed to applying Circular Economy In the construction sector, they managed to minimize the amount of such waste in landfills and reduce the use of natural resources (such as aljez stone and water) in the manufacturing of these products, reducing them by 25% to 30%.
A new plaster product
At first, scientists tried to design and manufacture panel ÿ Plate With higher surface hardness and greater elasticity, this means that the appearance of cracks is improved, and the mechanical resistance has been adjusted as required, so it can be used in construction.
In addition, they also verified the feasibility of the company that produces this product and the company that manufactures this product to produce panels and boards. Cable recycling. He pointed out: “Cable recycling companies will generate enough plastic waste from cables to supply to gypsum precast parts manufacturing companies, which can reduce this waste by 100%.” Placeholder image by Alejandra Vidales, The lead author and researcher of UPM.
The research team then analyzed characteristic Compounds that counteract very common external effects in buildings: water, This fire with hot. They observed that due to the water-repellent effect of plastic waste and the fewer pores in its composition, the water absorption capacity was significantly reduced. But it retains the damp and heat characteristics of gypsum.
On the other hand, the non-combustibility of plaster also helps to improve the behavior of plastic waste before the fire, thereby providing a physical protection mechanism for it within a certain period of time. The coating constitutes a physical barrier to the passage of heat and volatile substances. The thermal performance is also slightly improved, which helps reduce energy requirements compared to traditional materials.
These compounds also have good surface comfort. This leads to a decrease in the degree of coldness on the outer surface thereof, thereby reducing the condensation phenomenon, and improving the adhesion to the support due to the larger roughness of the surface.
After conducting mineralogical, mechanical, chemical and physical tests and studying the environmental impact, the results obtained proved the feasibility and interest of the gypsum material. The cable has plastic residues in the cable and can be used to make more exposed to water Building components such as basement floors, ground floors or interior walls with holes.
“This confirms the adoption of Sustainability Alejandra Vidales concluded: “Through circular economy, you can contribute to sustainable development from the construction industry.”
Alejandra Vidales-Barriguete, Evangelina Atanes-Sánchez, Mercedes del Río-Merino, Carolina Piña-Ramírez (2020). “Analyze the improved water resistance of the plaster compound after adding plastic waste.” Construction and building materials 230. https://doi.org/10.1016/j.conbuildmat.2019.116956
Alejandra Vidales Barriguete (Alejandra Vidales Barriguete), Mercedes del Río Merino (Mercedes del Río Merino), Ivangelina Atanes Sanchez ( Evangelina Atanes Sánchez, Carolina Piña Ramírez, Carmen Viñas Arrebola (2018). “Analyze the feasibility of using CDW as an aggregate with low environmental impact in the group.” Construction and building materials 178. https://doi.org/10.1016/j.conbuildmat.2018.05.011