Nuevos Materiales de Base Yeso con Incorporación de Residuos de Caucho: Caracterización Físico-Mecánica

El objetivo de este trabajo es contribuir a la valorización del residuo de caucho sintético que proviene de coquillas aislantes de tuberías, estudiando su comportamiento formando parte del material compuesto escayola-caucho. Para ello se ha elaborado un plan experimental que permite evaluar su idoneidad como material de construcción, caracterizando el nuevo compuesto desde el punto de vista físico-mecánico; peso desecado, dureza Shore C, resistencia a flexión y resistencia a compresión. Se han estudiado cuatro granulometrías de residuo de caucho, 1-2 mm, 2-4 mm, 4-6 mm y 20-25 mm y distintos porcentajes de incorporación a la escayola, 1,25%; 2,50%; 5,00% y 7,50%, con una relación de agua/escayola de 0,76. Los resultados de los ensayos muestran que a pesar de que las resistencias mecánicas disminuyen con la incorporación del caucho, se obtiene un material de baja densidad, existiendo buena compatibilidad entre el residuo de caucho y la matriz de escayola, distribuyéndose los granos de caucho uniformemente en las probetas

Gypsum to gypsum (GtoG): The European Life+ project that aims to transform the gypsum waste market

The GtoG project is working for creating a recycling culture of gypsum products, changing the way this waste is usually treated in construction, renovation and demolition works, with the aim of achieving higher gypsum recycling rates in Europe and promoting selective deconstruction practices. For this purpose and under the leadership of Eurogypsum (the European Plaster and Plasterboard Manufacturers Association) five demolition companies, one demolition consultant, two gypsum waste processors, five plasterboard manufacturers and three academic partners, from 7 European countries, work together constituting the project consortium. A preliminary study on current practices was completed in 2013. Subsequently in 2014, a set of demonstration activities on deconstruction, processing of gypsum waste and reincorporation of recycled gypsum were conducted. Finally, during this year 2015, different results have been delivered, such as the European Handbook of best practices for controlled deconstruction of gypsum systems and the Report on best practice indicators for deconstruction, recycling and reincorporation practices. The final results will include an Inventory of best practices and the Roadmap for the future implementation of a sustainable value chain

Trazabilidad y calidad de los residuos de yeso: análisis de casos de estudio

En ciertos países, como es el caso de España, los residuos de yeso provenientes de Residuos de Construcción y Demolición (RCD), son sistemáticamente enviados a vertedero. Sin embargo, este material es completamente reciclable. Es por ello que existen sistemas de reciclaje ya implantados en distintos países europeos, como es el caso de Bélgica, Dinamarca, Finlandia, Francia, Países Bajos, Reino Unido y Suecia. Forman parte de los residuos de yeso reciclables la Placa de Yeso Laminado (PYL), los bloques de yeso y las placas de escayola

Gypsum recycling best practice indicators

Since January 2013, the Life+ GtoG project is working for transforming the gypsum waste market. The aim is to achieve higher gypsum recycling rates in Europe and to promote best practices in deconstruction, recycling and reincorporation processes. This paper focuses on the Best Practice Indicators (BPIs) for gypsum recycling. To this end, a set of monitoring parameters have been defined and combined in the form of Key Performance Indicators (KPIs) that have been tested by the three gypsum recyclers participating in the project. As a result, a group of BPIs has been obtained, which can be used to recognize and encourage best practices associated to the recycling route, from a technical, environmental, social and economic perspectiv

Gypsum plasterboard deconstruction to recycling Economic Study in Europe

Gypsum plasterboard are widely and increasingly used within the construction sector, as partitions, lining of walls, ceiling or flooring systems, representing consequently the largest proportion of the recyclable gypsum waste arisen nowadays in Europe. This paper studies the reverse logistics processes taking place in the End-of-Life (EoL) phase of the recyclable gypsum plasterboard, by analysing and discussing the existing business model for the distinct gypsum waste routes, either deconstruction or demolition, based on economic parameters and assumptions from a set of case studies where best deconstruction practices have been implemented. This analysis has been developed in the framework of the European Life+ GtoG Project ENV/BE/001039: ?From Production to Recycling, a Circular Economy for the European Gypsum Industry with the Demolition and Recycling Industry?. The study highlights the need for an effective deconstruction process to optimize the plasterboard waste recycling, as well as the impact that taxes charged to the disposal of construction and demolition waste have on the economics from deconstruction to recycling. Trabajo publicado en las Actas del Décimoquinto Congreso SGEM, Área "Energy and Clean Technologies", "Subject Area: Energy & Fuels; Geology; Nuclear Science & Technology". Indexado por ISI Web of Knowledge y Scopus. ISBN: 978-619-7105-38-4. Periodicidad: Anua

Formulación de indicadores para la monitorización del reciclaje en ciclo cerrado de productos de base yeso: deconstrucción, procesado y reincorporación

El establecimiento de un sistema de indicadores se ha configurado en los últimos años como un método simple de evaluación en los procesos de toma de decisiones. Los indicadores son medidas cuantitativas, cualitativas o descriptivas, que permiten simplificar la información disponible acerca de un elemento y/o calidad de un proceso, en una forma relativamente sencilla de utilizar y comprender. De tal manera que su información debe de ser relevante y útil para facilitar las decisiones que serán tomadas sobre la base de sus resultados, con el propósito de optimizar los procesos a medir e identificar cambios o mejoras

Factors impacting the market share of Construction and Demolition (C&D) Waste recycling solutions

Current EU Directives force the Member States to assure by 2020 that 70% of the Construction and Demolition (C&D) waste is recovered instead of landfilled. While some countries have largely achieved this target, others still have a long way to go. For better understanding the differences arising from local disparities, six factors related to technical, economic, legislative and environmental aspects have been identified as crucial influences in the market share of C&D waste recycling solutions. These factors are able to identify the causes that limit the recycling rate of a certain region. Moreover, progress towards an efficient waste management can vary through the improvement of a single factor. This study provides the background for further fine-tuning the factors and their combination into a mathematical model for assessing the market share of C&D recycling solutions

Gypsum end-of-life Best Practice Indicators

The use of indicators has become in recent years as a reliable method of evaluation for the decision-making processes [1]. Indicators give quantitative, qualitative or descriptive information about an item and or process [2] , to ease the decisions that will be taken on the basis of their results, in order to optimize the processes that are being measured identifying changes and improvements [3].This study presents a set of Best Practice Indicators (BPIs) aiming to increase the amount of gypsum waste capable of being recycled, as well as to maximize the quality and percentage of recycled gypsum that can be reincorporated in the manufacturing process. Thus, the practices implemented through the whole value chain of gypsum plasterboard have been assessed. That is to say, from the deconstruction dismantling, through the gypsum waste processing, to the resulting recycled gypsum reincorporation into the manufacturing process. Key Performance Indicators (KPIs) are formulated and used to monitor and compare the five pilot projects conducted in the framework of the Life+ GtoG Project “ From Production to Recycling, a Circular Economy for the European Gypsum Industry with the Demolition and Recycling Industry”

Defining best practices indicators for deconstruction of gypsum based products towards an effective closed-loop

Whereas building demolition is synonym of destruction, resulting on what is usually known as debris, selective demolition or deconstruction devotes special attention to cause minimal damage on materials through on-site waste segregation, therefore increasing the re-use or recycling options. Consequently, segregation becomes essential for effectively close the loop of certain building materials, as for the case of gypsum waste. Aiming to define the best practices indicators for assessing the deconstruction of gypsum based products, five pilot projects in four European countries (Belgium, France, Germany and the United Kingdom) have been monitored through a set of economic, environmental, social and technical parameters. These parameters have been combined in resulting indicators that enable to assess different aspects compared to demolition practices, such as the effectiveness of the deconstruction and segregation processes, waste traceability, labour time, costs and the environmental impacts targeted. The differences arising in each country have also been underlined. The study has been conducted within the framework of the Life+ GtoG project, which from January 2013 is working for transforming the gypsum waste market, with the aim of achieving higher gypsum recycling rates and promoting deconstruction practices in Europe

Views about scientific inquiry (VASI) : the case of Spain and Sweden

There is agreement among researchers that one of the main objectives of scientific literacy is that all students understand Scientific Inquiry (SI). Even with many educational proposals guided by SI, there is still difficulty assessing learners' notions about it. The results presented in this paper represent the Spain and Swedish sample using the VASI questionnaire. The objective was to evaluate the notions of scientific investigation of the 7th grade students. Analyzing the responses of students, it can be considered that they can conceptualize some aspects of the nature of scientific inquiry, but cannot identify them in real situations