Environmental Assessment of Alternative Strategies for the Management of Construction and Demolition Waste: A Life Cycle Approach

Banias, G.; Karkanias, C.; Batsioula, Maria; Melas, Lefteris D.; Malamakis, A.; Geroliolios, Dimitris; Skoutida, Stamatia; Spiliotis, Xenofon

doi:10.3390/su14159674

Cited by 12 publications

(3 citation statements)

References 51 publications

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“…The European Green Deal refers to the construction industry as one of the key issues for green transition, and can contribute in a fundamental way to Europe's carbon neutrality which must be achieved by 2050 [14]. In fact, although the Waste Framework Directive [15] aimed for 70% of CDW to be recycled by 2020, the average recycling rate for this type of waste in Europe is 50%, although in certain countries such as Denmark, Estonia or the Netherlands the rate goes up to 90% [16,17]. Considering that CDWs are made up of materials that can be recovered again in the same sector, the possibilities of reducing the consumption of raw materials in construction are enormous.…”

Section: Introductionmentioning

confidence: 99%

Recycled Aggregates from Ceramic and Concrete in Mortar Mixes: A Study of Their Mechanical Properties

et al. 2022

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In recent decades, large amounts of construction and demolition waste (CDW) have been generated and accumulated throughout Europe, which is a challenge to manage and control nowadays. This work shows the results of a study carried out with samples of ceramic recycled aggregates (CRAs) and recycled concrete aggregates (RCAs) mixed with cement (C) in mortars. The main objective of this research is to demonstrate how, by adding CRAs and RCAs to a mixture of cement and natural aggregate (NA), it is possible to develop a high-strength mortar and achieve the best mixing ratio. To achieve these objectives, the characterization of the samples was initially carried out such as XRF, XRD and SEM. Next, tests were carried out on the products obtained, such as the consistency of the fresh mortar and the density of the specimens. Finally, a study of mechanical compressive strength was performed at 7, 28 and 200 days. The results show that although both CRAs and RCAs negatively affect the curing process of the specimens, it is possible to develop mortars with compressive strengths greater than 20 MPa. An obvious increase in mechanical compressive strengths was seen between 7 and 200 days of analysis. The results achieved in this research could be an important guide for the management of CDWs by local industries, thus favouring the development of the circular economy.

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Section: Introductionmentioning

confidence: 99%

Recycled Aggregates from Ceramic and Concrete in Mortar Mixes: A Study of Their Mechanical Properties

et al. 2022

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“…Assessments are based on ISO 14040 [26] and ISO 14044 [27] standards, which are the key standards for LCA and are commonly used to measure the carbon footprint of buildings and building materials [28]. The LCA method is a comprehensive research method that considers all stages of a building's life cycle, from raw material sourcing to production, construction, usage, and destruction [29,30]. The basic elements of LCA are (1) the identification and quantitative assessment of the environmental impacts, i.e., the materials and energy consumed and the emissions and waste released into the environment;…”

Section: Building Carbon Footprint Assessmentmentioning

confidence: 99%

Life Cycle Assessment and Building Information Modeling Integrated Approach: Carbon Footprint of Masonry and Timber-Frame Constructions in Single-Family Houses

Mazur,

Olenchuk

2023

Sustainability

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The analysis of the carbon footprint of buildings is a key tool for assessing the impact of different buildings on climate change. Several frameworks and methodologies are available to calculate the footprint of buildings, including standards and norms, Life Cycle Assessment (LCA), and dedicated software tools. The use of Building Information Modeling (BIM) programme for these calculations is both scientifically justified and very practical. This scientific publication focuses on the application of a BIM-based research methodology to analyse the carbon footprint of a single-family house. The research process included the following steps: (i) the design of a single-family house with masonry construction using Archicad 26, BIM programme, (ii) simulation of the building energy performance using the EcoDesigner Star plug-in, (iii) LCA using the plug-in for Archicad, (iv) preparation of a second model with timber-frame construction for comparison, and (v) comparative analysis of the single-family house models with masonry construction (building A) and timber-frame (building B). Analysis of the results highlights significant differences in CO2e emissions between buildings and the varying impact of individual elements on the total CO2e emissions of the buildings studied. Building A had significantly higher net emissions, amounting to 43,226.94 kg CO2e, in stark contrast to Building B’s significantly lower 13,522.13 kg CO2e. This discrepancy was also mirrored in the emission intensity, with Building A emitting at a rate of 281.06 kg CO2e/m2 compared to Building B’s 96.72 kg CO2e/m2. These findings are relevant for future work on sustainable building design and construction aiming to minimise negative environmental impacts. The goal of minimising the cumulative carbon footprint of buildings is critical to achieve the Sustainable Development Goals and combating climate change.

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“…The basis for the studies are the ISO 14040 [50] and ISO 14044 [51] standards, which are key standards concerning the assessment in studies of the carbon footprint of buildings and building materials [52]. The LCA analysis method is a comprehensive research method that considers all stages of a building's life cycle: from raw material acquisition, through production, construction, and use, to demolition and recycling [53,54]. The LCA method is widely used in studies of buildings' carbon footprint due to its holistic approach and consideration of many aspects [55][56][57].…”

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confidence: 99%

External Wall Systems in Passive House Standard: Material, Thermal and Environmental LCA Analysis

Mazur,

Szlachetka,

Jeleniewicz

et al. 2024

Buildings

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The construction sector, a significant consumer of energy, possesses the potential to realize substantial environmental and economic advantages through the adoption of innovative technologies and design approaches. Notably, the Passive House standard, exemplified by energy-efficient single-family homes, emerges as a prominent solution. This study analyzes five external wall systems across multiple stages: (i) a literature review and examination of external wall techniques within the passive standard, utilizing the Passive House Database; (ii) a material and technological assessment of three wood-based and two masonry constructions; (iii) an in-depth thermal performance analysis of selected external partitions; and (iv) a Life Cycle Assessment (LCA) of the external wall systems. Our findings indicate that among the single-family homes built to the passive standard, 50.94% utilized timber constructions, while 34.21% employed masonry. Thermal analysis revealed that the masonry wall, EW-M-01, exhibited superior thermal efficiency with a heat transfer coefficient (U-value) of 0.0889 W/m2K. Meanwhile, the wooden wall, EW-T-01, led its category with a U-value of 0.1000 W/m2K. The LCA highlighted that the wooden wall EW-T-02 presented the lowest integrated non-renewable energy demand (PENTR) at 425.70 MJ/kg and the most favorable Global Warming Potential (GWP), with a reduction of 55.51 kg CO2e. Conversely, the masonry wall EW-M-01 recorded the highest energy demand and CO2e emissions, at 780.96 MJ/kg and 90.59 kg CO2e, respectively. Water consumption was lowest for the EW-T-02 wooden wall (0.08 m3) and highest for the EW-M-02 masonry wall (0.19 m3). Conclusively, our analysis of passive house external walls demonstrates that wood-based systems offer superior performance in terms of materials, thermal efficiency, and LCA indicators, positioning them as the preferred option for sustainable passive construction.

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Environmental Assessment of Alternative Strategies for the Management of Construction and Demolition Waste: A Life Cycle Approach

Cited by 12 publications

References 51 publications

Recycled Aggregates from Ceramic and Concrete in Mortar Mixes: A Study of Their Mechanical Properties

Recycled Aggregates from Ceramic and Concrete in Mortar Mixes: A Study of Their Mechanical Properties

Life Cycle Assessment and Building Information Modeling Integrated Approach: Carbon Footprint of Masonry and Timber-Frame Constructions in Single-Family Houses

External Wall Systems in Passive House Standard: Material, Thermal and Environmental LCA Analysis

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