scholarly journals UPCYCLING OF TECHNOGENIC MINERAL WASTE – CHALLENGES AND SOLUTIONS

2021 ◽  
Vol 1 ◽  
pp. 183-190
Author(s):  
Gotfrīds Noviks
Keyword(s):  
Significant Proportion ◽  
Glass Ceramics ◽  
Chemical Properties ◽  
Porous Ceramics ◽  
Construction And Demolition Waste ◽  
Added Value ◽  
The European Union ◽  
Demolition Waste ◽  
Composition And Structure ◽  
Mineral Waste

Industrial mineral waste accounts for a significant proportion of all global waste. In the European Union it is more than 71% (2,5 Gt ) of the total amount of non-hazardous waste - construction and demolition waste, ash and slag, tailings residues, unconditioned waste rocks, etc. In Latvia, the share of this waste is about 20%. Due to the fact that they are inert, non-biodegradable materials and cannot be used for energy production and cannot be reduced by incineration, their stocks are increasing every year. Their utilization volumes are low and focused mainly on use as backfill when carrying out various earthworks. At the same time, mineral waste, both in terms of composition and structure, physical and chemical properties, is a serious mineral resource, the processing of which can result in high-quality useful products, thus implementing the waste upcycling principle - the newly acquired product has higher added value than the original. The paper evaluates the physical and technical possibilities and perspectives for the production of eco-innovative materials from mineral waste - geopolymers, glass ceramics, porous ceramics and mineral-organic composite materials.

scholarly journals Energy Performance Assessment of Innovative Building Solutions Coming from Construction and Demolition Waste Materials

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1226
Author(s):  
Beatriz Fraga-De Cal ◽  
Antonio Garrido-Marijuan ◽  
Olaia Eguiarte ◽  
Beñat Arregi ◽  
Ander Romero-Amorrortu ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Energy Demand ◽  
Energy Savings ◽  
Flow Analysis ◽  
Weather Conditions ◽  
Energy Performance ◽  
Construction And Demolition Waste ◽  
The European Union ◽  
Demolition Waste ◽  
The Impact

Prefabricated solutions incorporating thermal insulation are increasingly adopted as an energy conservation measure for building renovation. The InnoWEE European project developed three technologies from Construction and Demolition Waste (CDW) materials through a manufacturing process that supports the circular economy strategy of the European Union. Two of them consisted of geopolymer panels incorporated into an External Thermal Insulation Composite System (ETICS) and a ventilated façade. This study evaluates their thermal performance by means of monitoring data from three pilot case studies in Greece, Italy, and Romania, and calibrated building simulation models enabling the reliable prediction of energy savings in different climates and use scenarios. Results showed a reduction in energy demand for all demo buildings, with annual energy savings up to 25% after placing the novel insulation solutions. However, savings are highly dependent on weather conditions since the panels affect cooling and heating loads differently. Finally, a parametric assessment is performed to assess the impact of insulation thickness through an energy performance prediction and a cash flow analysis.

scholarly journals Circular Economy on Construction and Demolition Waste: A Literature Review on Material Recovery and Production

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 2970 ◽  
Author(s):  
Clarence P. Ginga ◽  
Jason Maximino C. Ongpeng ◽  
Ma. Klarissa M. Daly
Keyword(s):  
Literature Review ◽  
Circular Economy ◽  
Business Models ◽  
Latent Dirichlet Allocation ◽  
Traditional Approach ◽  
Construction And Demolition Waste ◽  
The European Union ◽  
Demolition Waste ◽  
Material Recovery ◽  
New Construction

Construction and demolition waste (CDW) accounts for at least 30% of the total solid waste produced around the world. At around 924 million tons in the European Union in 2016 and 2.36 billion tons in China in 2018, the amount is expected to increase over the next few years. Dumping these wastes in sanitary landfills has always been the traditional approach to waste management but this will not be feasible in the years to come. To significantly reduce or eliminate the amount of CDW being dumped, circular economy is a possible solution to the increasing amounts of CDW. Circular economy is an economic system based on business models which replaces the end-of-life concept with reducing, reusing, recycling, and recovering materials. This paper discusses circular economy (CE) frameworks—specifically material recovery and production highlighting the reuse and recycling of CDW and reprocessing into new construction applications. Likewise, a literature review into recent studies of reuse and recycling of CDW and its feasibility is also discussed to possibly prove the effectivity of CE in reducing CDW. Findings such as effectivity of recycling CDW into new construction applications and its limitations in effective usage are discussed and research gaps such as reuse of construction materials are also undertaken. CE and recycling were also found to be emerging topics. Observed trends in published articles as well as the use of latent Dirichlet allocation in creating topic models have shown a rising awareness and increasing research in CE which focuses on recycling and reusing CDW.

scholarly journals Construction Waste Production in Macroeconomic Context

2021 ◽  
Vol 1203 (2) ◽  
pp. 022080
Author(s):  
Martin Marek ◽  
Jana Korytárová
Keyword(s):  
National Economy ◽  
Point Of View ◽  
Construction And Demolition Waste ◽  
Total Production ◽  
The European Union ◽  
Demolition Waste ◽  
Construction Waste ◽  
Waste Production ◽  
The Impact ◽  
The Eu

Abstract This article aims at presenting the economic impacts of implementing the basic principles of construction demolition waste management in terms of saving construction costs. Emphasis is placed on fulfilling the 3R principle, i.e. reducing waste, reusing it, and recycling resources and products. Construction and demolition waste represents the largest mass waste flow in the EU, e.g. in 2018, it represented 36% of the total waste production in the whole EU- 27. The European Union is gradually introducing measures to reduce the production of construction waste compared to the Czech Republic, where the share of construction demolition waste on the total production was up to 42% in 2018. This value exceeds the EU-27 average. The article analyses available statistical data from the national CZSO and the European statistical office EUROSTAT on the waste production classified according to EWC-STAT, which is a classification of waste according to Directive No. 2150/2002. Items monitoring the waste produced by the construction industry are listed on the 41st to 43rd place of the EWC-STAT list of all monitored waste. The data obtained allows comparing three branches of construction production, the 41st Building construction, 42nd Civil engineering, and 43rd Specialized construction activities. Another possibility to obtain data is to use a division according to the waste producer economic activity (CZ NACE). The data obtained in this way is compared with the performance indicators of the national economy. By comparing the size of the construction demolition waste production with the performance of the national economy (especially the GDP indicator), the degree of their interdependence was determined. The aim of the analysis is to assess the relation between the country’s economic performance and the production of construction and demolition waste. The next step was to perform an analysis from the point of view of the 3R principle in order to examine the impact of measures to reduce the construction demolition waste production in connection with the already initiated processes of its possible recycling or reuse.

scholarly journals Machine Learning in Hazardous Building Material Management: Research Status and Applications

2021 ◽  
Vol 03 (02) ◽  
pp. 1-1
Author(s):  
Pei-Yu Wu ◽  
◽  
Kristina Mjörnell ◽  
Claes Sandels ◽  
Mikael Mangold ◽  
...  
Keyword(s):  
Machine Learning ◽  
Learning Algorithms ◽  
Hazardous Materials ◽  
Machine Learning Algorithms ◽  
Construction And Demolition Waste ◽  
The European Union ◽  
Material Management ◽  
Demolition Waste ◽  
Research Status ◽  
Management Protocol

Assessment of the presence of hazardous materials in buildings is essential for improving material recyclability, increasing working safety, and lowering the risk of unforeseen cost and delay in demolition. In light of these aspects, machine learning has been viewed as a promising approach to complement environmental investigations and quantify the risk of finding hazardous materials in buildings. In view of the increasing number of related studies, this article aims to review the research status of hazardous material management and identify the potential applications of machine learning. Our exploratory study consists of a two-fold approach: science mapping and critical literature review. By evaluating the references acquired from a literature search and complementary materials, we have been able to pinpoint and discuss the research gaps and opportunities. While pilot research has been conducted in the identification of hazardous materials, source separation and collection, extensive adoption of the available machine learning methods was not found in this field. Our findings show that (1) quantification of asbestos-cement roofing is possible from the combination of remote sensing and machine learning algorithms, (2) characterization of buildings with asbestos-containing materials is progressive by using statistical methods, and (3) separation and collection of asbestos-containing wastes can be addressed with a hybrid of image processing and machine learning algorithms. Analysis from this study demonstrates the method applicability and provides an orientation to the future implementation of the European Union Construction and Demolition Waste Management Protocol. Furthermore, establishing a comprehensive environmental inventory database is a key to facilitating a transition toward hazard-free circular construction.

scholarly journals A Comprehensive Summary of Available Legislation and Practices in Demolition and Construction & Demolition Waste Management in the Arctic Region

2021 ◽  
Vol 64 (1) ◽  
pp. 145-162
Author(s):  
Iveta Nováková ◽  
Tatiana Drozdyuk ◽  
Katja Ohenoja ◽  
Arcady Ayzenshtadt ◽  
Bård Arntsen ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Waste Management ◽  
Building Materials ◽  
Construction And Demolition Waste ◽  
The Arctic ◽  
The European Union ◽  
Demolition Waste ◽  
Climate Conditions ◽  
Good Practices ◽  
Management Protocol

Abstract The need for better natural resource use is currently increasingly recognised, and high emphasis is given to the circularity of building materials and the reduction of activities with negative environmental impact. Legislation, guidelines, and other documentation play an important role in improving demolition activities and construction and demolition waste (CDW) management. Good practices in CDW handling is not achievable without knowledge about CDW recovery techniques described in guidelines and other documents. Demolition activities in arctic regions could be more challenging due to harsh climate conditions, and therefore the cooperation between Russia, Norway and Finland was established to boost the uptake of good practices in demolition activities and CDW management. The main subject of this article is an overview of presently used demolition practices, CDW management, and verification of areas where practices with lower environmental impact and increase of material circularity could be utilised. Two fundamental documents, namely “EU Construction & Demolition Waste Management Protocol” and “Guidelines for the waste audits before demolition and renovation works of buildings” [1, 2], were published by the European Union (EU) in 2019 and serve as a foundation for changes in demolition activities and CDW management in EU and adventitiously also in the Russian Federation and Norway.

scholarly journals COMPARATIVE STUDY OF ON-SITE SORTING FOR C&D IN CHINA AND EUROPE

Detritus ◽  
2020 ◽  
pp. 114-121
Author(s):  
Jianli Hao ◽  
Francesco Di Maria ◽  
Zhikun Chen ◽  
Shiwang Yu ◽  
Wenting Ma ◽  
...  
Keyword(s):  
Management Practices ◽  
Construction And Demolition Waste ◽  
Inert Material ◽  
The European Union ◽  
Prevention Strategies ◽  
Demolition Waste ◽  
Role Of Government ◽  
Government Involvement ◽  
The Eu

Construction and demolition waste (CDW) accounts for 40% of urban municipal waste in China and around 25% in the European Union (EU). Since the EU is more developed and urbanized than China, its experience with managing CDW may be helpful to China. This study therefore compared China and the EU with respect to the flow of CDW materials and the policies, laws and regulations for CDW management. The results reveal that the CDW management practices and facilities in China are relatively underdeveloped with a large amount of low-value inert material going to landfill compared with the EU. The study also reveals the important role of government involvement in CDW management, including the use of punitive measures and preferential policies; most EU members states achieved their waste recovery rates by 2016 due to mature CDW legalization. To improve the management of CDW in China, a series of suggestions are proposed including waste prevention strategies, establishment of supervision mechanisms, and financial support.

scholarly journals Mechanical characterization of concretes produced with construction and demolition waste

2020 ◽  
Vol 9 (1) ◽  
pp. e56911597
Author(s):  
Pedro Valle Salles ◽  
Thiago Marques Viana ◽  
Camila Lacerda Gomes ◽  
Flávia Cristina Silveira Braga ◽  
Flávia Spitale Jacques Poggiali ◽  
...  
Keyword(s):  
Mechanical Characterization ◽  
Construction And Demolition Waste ◽  
Partial Replacement ◽  
The European Union ◽  
Demolition Waste ◽  
Environmental Liabilities ◽  
Mixing Method ◽  
Natural Aggregates ◽  
Good Workability

The construction industry is responsible for the generation of large volumes of waste, known as construction and demolition waste (CDW). Around the world, millions of tons of these wastes are generated annually, which often become important environmental liabilities. The situation gets worse as the sector develops. In Europe, only 15 of the 27 countries in the European Union annually produce around 180 million tonnes of CDW, in Brazil, the data about this indicates that in 2014 the municipalities collected about 45 million tons of CDW, quantity 4.1% higher than in 2013. In this scenario, the present study aims to evaluate the partial replacement of natural aggregates by CDW (aggregates of concrete waste) in the production of concretes. In this sense, the effects of this substitution on the workability and mechanical characteristics of the concretes produced, as well as the influence of the mixing method and the percentage of superplasticizer additive on the same characteristics were evaluated. The methodology basically consists in the production of seven different traits, which are references and different combinations of mixing method, aggregate substitutions and superplasticizer percentages. Specimens of these traces were molded for mechanical characterization. Workability parameters were also evaluated. It is concluded that the workability is strongly affected by the addition of CDW, but a good workability can be obtained with the use of superplasticizer additives. The mixing method did not change the results obtained for this property. The results also indicate that the compressive and tensile strengths are not negatively affected by the substitution of aggregates, as well as being not significantly affected by the presence of the percentages of superplasticizer used, nor by the mixing methods.

scholarly journals Recommendations for the Management of Construction and Demolition Waste in Treatment Plants

Proceedings ◽  
2018 ◽  
Vol 2 (20) ◽  
pp. 1278
Author(s):  
Auxi Barbudo ◽  
Jesús Ayuso ◽  
Angélica Lozano ◽  
Manuel Cabrera ◽  
Antonio López-Uceda
Keyword(s):  
European Union ◽  
Construction Projects ◽  
Construction And Demolition Waste ◽  
Treatment System ◽  
Recycled Aggregates ◽  
The European Union ◽  
Demolition Waste ◽  
Natural Aggregates

Construction and demolition waste consists approximately of one third waste generated in the European Union. The recycling of this stream waste will provide ecological and sustainable benefits. Recycled aggregates from construction and demolition waste are clearing a path into civil constructions, as substitutes for natural aggregates. The possible applications of recycled aggregates on infrastructure construction projects will depend on the quality of the recycled aggregates mainly. This will be determined by the nature and the origin of the construction and demolition waste, and the treatment system undergone. Hence, this work proposes recommendations for the handling of construction and demolition waste in treatment plants.

scholarly journals Study of the possibilities to reuse construction and demolition waste

2019 ◽  
pp. 246-252 ◽  
Author(s):  
Denitsa Hvarchilkova ◽  
Margarita Filipova ◽  
Ivanka Zheleva
Keyword(s):  
Waste Management ◽  
Building Materials ◽  
Raw Materials ◽  
Road Construction ◽  
Waste Recycling ◽  
Construction And Demolition Waste ◽  
The European Union ◽  
Demolition Waste ◽  
Construction Waste ◽  
Outdoor Sports

For environment protection in the European Union (EU) it is very important the construction waste to be recycled and reused. The potential for the construction waste recycling and reuse is high, as their components have high cost. There is an opportunity for re-use of such materials in road construction, for drainage systems, for outdoor sports grounds and other construction sites. In 2012 a regulation on the management of construction waste and on the use of recycled building materials was adopted in Bulgaria, aiming to introduce a new model for the management of construction waste. This would guarantee: creation of favorable legislative and economic conditions for implementation of technologies ensuring the achievement of recycling and recovery targets but which are also financially viable in line with the country's incomes; identifying the persons responsible for covering the costs of building waste management and achieving the recycling and recovery targets; creating conditions for the production and marketing of materials from recycling of construction waste at a price that is competitive with the same new raw materials used in construction. The main effect expected from this normative document is to contribute to Bulgaria's development towards European trends, environmental protection through an integrated framework for the management of construction and demolition waste that will reduce the harmful impacts on it caused by construction waste, improving the efficiency of resource use, increasing the responsibilities of pollutants and stimulating investment in waste management.

Sign in / Sign up

Export Citation Format

Share Document