Reciclado de placas de yeso laminado aligeradas con residuos de poliuretano = Recycling of gypsum plasterboard lightened with polyurethane waste

Abstract

Este trabajo presenta los resultados de un proceso experimental de reutilización de residuos obtenidos de desechos de placas de yeso laminado elaboradas con residuos poliméricos de origen industrial (espuma de poliuretano) y reforzadas con fibras de polipropileno, para la fabricación de nuevas placas de yeso laminado. Para ello, se expone la metodología de reciclado de placas prefabricadas buscando de esta forma aumentar el ciclo de vida del yeso y de los residuos de poliuretano empleados. Para ello se detalla el proceso de fabricación las nuevas placas así como su caracterización mediante ensayos físicos y mecánicos a través de ensayos normalizados para placas de yeso laminado (densidad aparente, resistencia a flexión, absorción total en agua y dureza superficial). Los resultados obtenidos indican que es posible reciclar este tipo de prefabricados de una manera sencilla. De la misma forma se ha demostrado que las nuevas placas fabricadas con el residuo recuperado, presentan un buen comportamiento mecánico, a la par que se reduce su capacidad de absorción de agua y se aumenta su dureza su superficial. Abstract This paper presents the results of an experimental process of reusing waste obtained from waste gypsum plasterboard made from polymeric industrial waste (polyurethane foam) and polypropylene fibers whit the aim to manufacturer new gypsum plasterboards. Therefore, a methodology to recycle is presented to increase the life cycle of waste gypsum. The manufacturing process of the plates is detailed as well as their physical and mechanical characterization by means of standardized for gypsum plasterboard (bulk density, flexion strength, total water absorption and surface hardness). The results indicate that it is possible to recycle this type of prefabricated in a simple way. Likewise it has been demonstrated that new plates made with the residue reusing, have good mechanical strength, at the same time reduce the capacity of water absorption and increase its surface hardness.

Analysis of the improved water-resistant properties of plaster compounds with the addition of plastic waste

“…It is observed that water uptake reduced by 42.59-57.41-62.9 6% respectively in the 50-60-70%PW compounds compared to the reference compound, exceeding the 40% reduction in capillary water absorption achieved in other studies carried out with gypsum matrix and polyurethane polymer waste [33]. The compound with the lowest capillary water absorption capacity was E0.8-70PW (2.0 mm/min) and the one with the highest was E0.8-50PW (3.1 mm/min).…”

Design and Characterization of Gypsum Mortars Dosed with Polyurethane Foam Waste PFW

“…There are investigations oriented towards the design of improved gypsum mortars through the inclusion of rigid polyurethane foam waste [33][34][35][36]. Nevertheless, no references have been found to prefabricated construction materials that integrate polyurethane waste The Life Repolyuse project proposed, to good effect, the manufacture of gypsum panels with polyurethane waste, for their use in the manufacture of technical roofs [19].…”