scholarly journals Valorization of Inert Part of Construction and Demolition Wastes for the Production of Fired Bricks

Proceedings ◽  
2019 ◽  
Vol 34 (1) ◽  
pp. 8
Author(s):  
Reis ◽  
Cazacliu ◽  
Cothenet ◽  
Torrenti
Keyword(s):  
Firing Temperature ◽  
Building Materials ◽  
Xrd Analysis ◽  
Raw Material ◽  
Construction And Demolition Waste ◽  
Silty Sand ◽  
Clayey Sand ◽  
Demolition Waste ◽  
Earth Material ◽  
Fired Bricks

Green routes to prepare or manufacture sustainable building materials have been attracting a lot of attention over the years targeting sustainability issues. In this investigation, for the first time, sludge from the inert mineral part of the construction and demolition waste (RA-S) is used as main raw material in the fabrication of fired bricks for building purposes. Fired bricks fabricated with different dosages of RA-S and earth material (i.e., 0%, 30%, 50%, 70% and 100% by weight) were prepared and evaluated in terms of their properties. The RA-S was characterized and the results showed that it can be classified as a clayey material and richly graded silty sand whereas brick soil can be classified as clayey sand according to the French Standards. XRD analysis revealed that the addition of the RA-S into raw earth material did not cause big changes in the final mineralogical properties of the fired bricks. The compressive strength (CS) test results indicated that the strength of the brick samples (fired at 800°C) increased with the addition of the RA-S from 30% to 70%. The CS of bricks fired at 800°C were 10.2 MPa, 13.2 MPa, and 16.7 MPa after incorporating 30%, 50% and 70% RA-S, respectively. The density of the fired brick slightly reduced with the RA-S addition. The highest strength was attained at the firing temperature of 800°C in relation to the firing temperature of 1000°C. The RA sludge can be used in combination with earth material to fabricate fired bricks, which can meet the requirements of many Standards all over the world. In the light of these results, it is possible to say that the RA-S generated from recycling inert mineral part of construction and demolition waste plant is a promising material to prepare efficient fired bricks that can be successfully employed in the real construction sector.

scholarly journals Crushed Bricks: Demolition Waste as a Sustainable Raw Material for Geopolymers

2021 ◽  
Vol 13 (14) ◽  
pp. 7572
Author(s):  
Gigliola D’Angelo ◽  
Marina Fumo ◽  
Mercedes del Rio Merino ◽  
Ilaria Capasso ◽  
Assunta Campanile ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Building Materials ◽  
Mechanical Performance ◽  
Raw Materials ◽  
Construction Material ◽  
Raw Material ◽  
The European Union ◽  
Total Energy Consumption ◽  
Demolition Waste ◽  
Crushed Brick

Demolition activity plays an important role in the total energy consumption of the construction industry in the European Union. The indiscriminate use of non-renewable raw materials, energy consumption, and unsustainable design has led to a redefinition of the criteria to ensure environmental protection. This article introduces an experimental plan that determines the viability of a new type of construction material, obtained from crushed brick waste, to be introduced into the construction market. The potential of crushed brick waste as a raw material in the production of building precast products, obtained by curing a geopolymeric blend at 60 °C for 3 days, has been exploited. Geopolymers represent an important alternative in reducing emissions and energy consumption, whilst, at the same time, achieving a considerable mechanical performance. The results obtained from this study show that the geopolymers produced from crushed brick were characterized by good properties in terms of open porosity, water absorption, mechanical strength, and surface resistance values when compared to building materials produced using traditional technologies.

scholarly journals Construction and demolition waste as a raw material for wood polymer composites – Assessment of environmental impacts

2019 ◽  
Vol 225 ◽  
pp. 716-727 ◽  
Author(s):  
Miia Liikanen ◽  
Kaisa Grönman ◽  
Ivan Deviatkin ◽  
Jouni Havukainen ◽  
Marko Hyvärinen ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Environmental Impacts ◽  
Raw Material ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
Wood Polymer ◽  
Wood Polymer Composites

scholarly journals Recycling of construction and demolition waste during renovation of territories and pavements of large cities

2018 ◽  
Vol 5 (4) ◽  
Author(s):  
Vitali Chulkov ◽  
Bakhruz Nazirov
Keyword(s):  
Urban Areas ◽  
Building Materials ◽  
Housing Stock ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
Large Cities ◽  
New Construction ◽  
Process Of Urbanization ◽  
The City ◽  
New Buildings

In the process of urbanization of large cities in different countries, there are similar problems of reorganization, involving the demolition of physically and morally obsolete buildings and structures, as well as the subsequent construction reorganization of the territories vacated or re-cut to the city. In the process of demolition of obsolete buildings and structures, as well as the construction of new buildings, inevitably significant amounts of waste and construction debris arise that should be recycled as much as possible into secondary building materials (to carry out the so-called «recycling» of waste). Types of construction reorganization of urban areas are divided into traditional, widely known and standardized (repair, reconstruction, restoration), and innovative, arising in the processes of reorganization of society. Among the innovative types of construction reorganization, renovation is currently the most relevant, meeting the need to renovate the dilapidated housing stock of cities. The article discusses the main types of construction waste generated during demolition and new construction, as well as the technologies used for recycling these wastes during the renovation of territories and pavements of large cities.

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 Environmental Impacts and Benefits of the End-of-Life of Building Materials: Database to Support Decision Making and Contribute to Circularity

2021 ◽  
Vol 13 (22) ◽  
pp. 12659
Author(s):  
Ana Antunes ◽  
Ricardo Martins ◽  
José Dinis Silvestre ◽  
Ricardo do Carmo ◽  
Hugo Costa ◽  
...  
Keyword(s):  
Decision Making ◽  
Waste Management ◽  
End Of Life ◽  
Environmental Impacts ◽  
Building Materials ◽  
National Level ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
Life Phase ◽  
The Impact

This paper outlines a methodology for structuring a generic database of environmental impacts on the end-of-life phase of buildings, which can be used at the national level, in accordance with European standards. A number of different options are also considered for managing construction and demolition waste (CDW), as well as for promoting the circularity of materials in construction. The database structure has been developed for use by the main stakeholders who decide the disposal scenario for the main CDW flows, assess waste management plans, and identify the corresponding environmental aspects. The impact categories considered in this paper are global warming potential (GWP) and the abiotic depletion potential of fossil fuels (ADP (f.f.)). This lifecycle assessment (LCA) database further facilitates the identification of important information, such as possible treatments for CDW, or suppliers of recycled materials for use in new construction. Two demolition case studies were used to confirm the benefits of the proposed database. Two demolition scenarios are assessed—traditional and selective—in order to demonstrate the advantage of selective demolition in waste management. The results obtained from the environmental assessment of CDW flows demonstrate that the proposed database can be an important and useful tool for decision making about the end-of-life of construction materials, as it is designed to maximize their reuse and recycling. An innovative online platform can be created based on this database, contributing to the reduction of the environmental impacts associated with the end-of-life phase of buildings.

Use of construction and demolition solid wastes for basket gabion filling

2020 ◽  
Vol 38 (12) ◽  
pp. 1321-1330
Author(s):  
João Alexandre Paschoalin Filho ◽  
Diego Gonçalves Camelo ◽  
David de Carvalho ◽  
António José Guerner Dias ◽  
Brenno Augusto Marcondes Versolatto
Keyword(s):  
Solid Waste ◽  
Environmental Impacts ◽  
Retaining Wall ◽  
Retaining Walls ◽  
Raw Material ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
Management Tools ◽  
Basaltic Rocks ◽  
Vertical Displacements

Construction and demolition wastes have been studied by technical means aiming at the development of management tools to reduce their environmental impacts. Among these, recycling can be highlighted. This paper aims at the technical assessment of basket gabions filled with construction and demolition solid waste. Gabions are usually used for retaining walls construction, and these are commonly filled with rocks. Retaining walls are essential for earthfill slopes stabilization, and they must have proper characteristics of strength. However, depending on the slope height or the technical responsibility of the retaining wall, alternative materials with proper characteristics could be used to fill the gabions. The use of recycled material for gabion filling could reduce environmental impacts and costs caused by retaining wall construction. So, basket gabion cells were filled with construction solid waste and basaltic rocks, both crushed into coarse granulometry aiming to compare technical characteristics among them. The performed laboratory tests showed that the horizontal and vertical displacements determined for gabion filled with wastes were near to those obtained for gabions filled with basaltic rocks for a retaining wall of 5 m and up. In conclusion, it can be drawn that basket gabions filled with construction and demolition waste may be a technical alternative for civil construction, reducing environmental impacts and raw material consumption for retaining wall execution.

A construction and demolition waste management model applied to social housing to trigger post-pandemic economic recovery in Mexico

2021 ◽  
pp. 0734242X2110528
Author(s):  
Pilar Mercader-Moyano ◽  
Patricia Edith Camporeale ◽  
Jesús López-López
Keyword(s):  
Latin American ◽  
Social Housing ◽  
Raw Materials ◽  
Current Model ◽  
Construction Materials ◽  
Raw Material ◽  
Construction And Demolition Waste ◽  
Economic Recovery ◽  
Main Role ◽  
Demolition Waste

Buildings consume 40% of raw material and primary energy and generate 35% of industrial waste worldwide, making this sector play a main role in raw material depletion, energy consumption and carbon emissions which provoke great environmental impact and worsen Global Warming. Latin American countries including Mexico have the world’s highest urbanisation rate (84%) but lack effective construction and demolition waste (CDW) management to thrive in regenerative sustainability, climate change mitigation and post-pandemic economic recovery. This work applies the Spanish current model to quantify on-site 61 Mexican social housing CDW with surveys to workers and supervisors as an additional source of data. The results of the case study show that social housing consumes 1.24 t.m−2 of raw materials and produces 0.083 t.m−2 of CDW. Cement-based, ceramic and mixed CDW represent 83.44% of total CDW. When considering inert soil as a recyclable resource, 78% of the remaining CDW ends in landfills and only 22% of it goes to recycling plants. The implementation of this methodology will deliver sustainable CDW management in Mexico, by minimising CDW production, promoting related legislation and allowing replacement of current construction materials for eco-efficient ones. Furthermore, these data can broaden the Spanish coefficients of the construction resources that become CDW to build an internationally sourced database.

Recycling of Construction and Demolition Waste Material for Energy Savings in India

2014 ◽  
Vol 632 ◽  
pp. 107-117
Author(s):  
Tejwant S. Brar ◽  
M. Arif Kamal ◽  
Pinto Emerson
Keyword(s):  
Solid Waste ◽  
Urban Areas ◽  
Building Materials ◽  
Construction Material ◽  
Construction And Demolition Waste ◽  
Capital Outlay ◽  
Demolition Waste ◽  
Recycled Materials ◽  
Awareness Campaigns ◽  
Recycled Material

Buildings are an integral part for development in any sector of economic growth and they consume resources not only during their construction but also for operation throughout their life. The design, construction, operation, maintenance, and ultimately the removal of buildings consume large amounts of energy, water, and building materials, and generate large quantities of waste, and pollute the air and water. The amount of resources consumed, waste generated can be judged from the fact that in any development project, the component of construction is quite large.The Indian construction industry has accounted for approximately 50% of the country's capital outlay in successive Five Year Plans, and projected investment continues to show a growing trend. Out of 48 million tonnes of solid waste generated in India, C&D (construction and demolition) waste makes up 25% annually. Despite this the use of recycled material in construction is not much, which can largely be attributed to various factors like lack of awareness on the part of designers/engineers, lack of awareness campaigns and appreciation of using recycled materials, unorganized market of recycled construction material, absence of a proper solid waste management system in urban areas, lack of tax incentives and poor implementation of legislation on the use of recycled materials. It is high time that the above said issues about the use of recycled material in construction in our country be addressed so as to achieve economy in construction coupled with easing burden on natural resources thereby resulting in cleaner environment.

Standardization as a Driving Force of the use of Recycled Coarse Aggregate in Concrete

2013 ◽  
Vol 742 ◽  
pp. 371-378
Author(s):  
Desirée Rodríguez Robles ◽  
Julia García González ◽  
Andrés Juan Valdés ◽  
Julia M. Morán del Pozo ◽  
M. Ignacio Guerra Romero
Keyword(s):  
Construction Industry ◽  
Driving Force ◽  
Building Materials ◽  
Coarse Aggregate ◽  
Environmentally Friendly ◽  
Coarse Fraction ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Demolition Waste ◽  
Recycled Coarse Aggregate

When recycled aggregates are used appropriately, it is possible to obtain good quality, economic and environmentally friendly building materials. The emergence in recent years of the use of recycled materials in the construction industry, specifically in the production of concrete, has met with varying degrees of success due to the barriers that the market for recycled products has still to overcome. Scientific studies have focused on the good properties presented by the coarse fraction of construction and demolition waste (CDW), leading to the formulation of various international recommendations which, although still insufficient, provide a stimulus to the use of recycled aggregates in concrete.

scholarly journals Life Cycle Assessment on Construction and Demolition Waste: A Systematic Literature Review

2021 ◽  
Vol 13 (14) ◽  
pp. 7676
Author(s):  
Jaime A. Mesa ◽  
Carlos E. Fúquene ◽  
Aníbal Maury-Ramírez
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Literature Review ◽  
Building Materials ◽  
Research Field ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
Life Cycle Stages ◽  
Innovative Tool ◽  
Method Analysis

Life Cycle Assessment (LCA) is considered an innovative tool to analyze environmental impacts to make decisions aimed at improving the environmental performance of building materials and construction processes throughout different life cycle stages, including design, construction, use, operation, and end-of-life (EOL). Therefore, during the last two decades, interest in applying this tool in the construction field has increased, and the number of articles and studies has risen exponentially. However, there is a lack of consolidated studies that provide insights into the implementation of LCA on construction and demolition waste (C&DW). To fill this research gap, this study presents a literature review analysis to consolidate the most relevant topics and issues in the research field of C&DW materials and how LCA has been implemented during the last two decades. A systematic literature search was performed following the PRISMA method: analysis of selected works is based on bibliometric and content-based approaches. As a result, the study characterized 150 selected works in terms of the evolution of articles per year, geographical distribution, most relevant research centers, and featured sources. In addition, this study highlights research gaps in terms of methodological and design tools to improve LCA analysis, indicators, and connection to new trending concepts, such as circular economy and industry 4.0.

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