scholarly journals Life cycle assessment of rubberized semi-dense asphalt pavements; A hybrid comparative approach

2022 ◽  
Vol 176 ◽  
pp. 105950
Author(s):  
Zhengyin Piao ◽  
Moises Bueno ◽  
Lily D. Poulikakos ◽  
Stefanie Hellweg
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Asphalt Pavements ◽  
Comparative Approach

Life Cycle Assessment of Ceramic Bricks

2012 ◽  
Vol 727-728 ◽  
pp. 815-820 ◽  
Author(s):  
Jerônimo Moraes Gomes ◽  
Ana Luiza Folchini Salgado ◽  
Dachamir Hotza
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Building Materials ◽  
Residential Buildings ◽  
Building Design ◽  
Comparative Approach ◽  
Red Clay ◽  
Environment Friendly ◽  
Input Material ◽  
Relevant Role

Ceramic bricks are one of the most widely used materials in both commercial and residential buildings. Ceramic bricks play a relevant role in the Brazilian economy. The basic input material for this industry is red clay. As environmental problems increase, the need for environment-friendly building design increases. To achieve this, architects and engineers need reliable data on the environmental impacts of various building materials, including ceramic bricks. In this paper a comparative Life Cycle Assessment between two ceramic brick production units in Santa Catarina State, Brazil, has been carried in a comparative approach. Key impact categories, including fossil fuel use, global warming, ozone depletion, ecotoxicity, and human toxicity were assessed. The analysis has shown a particular relevance of the respiratory effects in both systems and the critical point has been found in the fuel used in the furnace for firing the bricks which are responsible, during the ring process, for the relevant CO2 emissions.

scholarly journals Reliability Evaluation of Pavement Life-Cycle Assessment Model

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Jiale Huang ◽  
Fei Xiao ◽  
Yang Zhang
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Data Quality ◽  
Assessment Model ◽  
Asphalt Pavements ◽  
Statistical Methodology ◽  
Functional Equivalent ◽  
Pavement Structures ◽  
Evaluation Matrix ◽  
Lca Results

Inventory reliability of the life-cycle assessment (LCA) model highly depends on the data quality and normally exhibits significant uncertainty. A rigorous statistical methodology was established to capture and quantify the inherent uncertainties linked to the results of the LCA model. Two sources of uncertainty, data quality and model, were identified. The former was captured by converting the deterministic value to probability density function using beta distribution according to the evaluation matrix of data quality; the latter was assessed by prescribing variation interval through defining uncertainty factor. The functional equivalent pavement structures were designed, and the corresponding energy consumption and CO2 emission were calculated by the LCA model. A 10% variation was observed for the LCA results and within 30-year analysis span, at the 95% confidence level, and environmental burdens of cement pavement are higher than those of asphalt pavements while the comparison between the two asphalt pavements is not significant statistically. Therefore, the established statistical methodology is capable of capturing the uncertainty of the LCA model and quantifying the reliability the LCA results.

Life Cycle Assessment of Asphalt Pavements Using Crumb Rubber: A Comparative Analysis

2021 ◽  
pp. 1281-1287
Author(s):  
Zhengyin Piao ◽  
Moises Bueno ◽  
Peter Mikhailenko ◽  
Muhammad Rafiq Kakar ◽  
Davide Biondini ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Comparative Analysis ◽  
Crumb Rubber ◽  
Asphalt Pavements

scholarly journals Environmental Trade-Offs of Downcycling in Circular Economy: Combining Life Cycle Assessment and Material Circularity Indicator to Inform Circularity Strategies for Alkaline Batteries

2021 ◽  
Vol 13 (3) ◽  
pp. 1040
Author(s):  
Edis Glogic ◽  
Guido Sonnemann ◽  
Steven B. Young
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Resource Use ◽  
Comparative Approach ◽  
Small Reduction ◽  
Large Variability ◽  
Alkaline Batteries ◽  
Trade Offs ◽  
Joint Interpretation

The application of circularity strategies to improve resource use and recovery should be considered with their potential impacts on the environment. Their effectiveness could be evaluated by combining the material circularity indicator (MCI) and life cycle assessment (LCA) methods. Environmental trade-offs may be underestimated for some strategies given that the loss of material quality with recycling has not been captured within the methodological framework of MCI. The current study demonstrates how significantly this limitation may influence the trade-offs in a case study. The methods are applied to several scenarios for the circularity improvement of alkaline batteries. The joint interpretation of MCI and LCA scores is carried out using waterfall charts and normalized indicator scores. Results suggest that improving circularity generally reduces environmental impacts, although there is large variability among two sets of values. For example, an increase of MCI score by 14% for two recycling scenarios translates to a small reduction of impacts in one case (0.06–1.64%) and a large reduction in another (9.84–56.82%). Observations from the case study are used to discuss the design and scope of MCI use and its combining with LCA. Lastly, we draw on the opportunities of the new comparative approach.

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