scholarly journals FORROS DE GESSO E PVC COMPARATIVAMENTE AO FORRO DE MADEIRA: AVALIAÇÃO DO CICLO DE VIDA DE EMISSÕES DE CO2 [Gypsum and PVC Ceiling Linings comparatively to Timber Ceiling Linings: Life Cycle Carbon Emissions Assessment]

2018 ◽  
Vol 14 (2) ◽  
Author(s):  
Lissa Gomes Araújo ◽  
Júlia Santiago de Matos Monteiro Lira ◽  
Rosa Maria Sposto
Keyword(s):  
Life Cycle ◽  
Construction Industry ◽  
Carbon Emissions ◽  
Environmental Sustainability ◽  
Building Materials ◽  
Residential Buildings ◽  
Secondary Data ◽  
Hybrid Analysis ◽  
Alternative Means ◽  
Increase Productivity

RESUMO:  A crescente necessidade de gerar economia e aumentar a produtividade na construção civil tem incentivado a busca por meios e métodos alternativos, o que aumentou a atenção direcionada a materiais mais eficientes, inclusive quanto ao aspecto da sustentabilidade ambiental. O objetivo deste trabalho é quantificar as emissões de CO2 dos sistemas de vedação horizontal interna utilizados em edificações habitacionais, ou mais precisamente, sistemas de forros de gesso acartonado e de PVC, comparativamente ao forro de madeira. Para o alcance deste objetivo utilizou-se a metodologia ACVCO2, com análise híbrida, dados secundários e dimensionamentos comerciais. O sistema de forro de madeira apresentou emissões 26% maiores que a do PVC e 67% maiores que a do gesso. Este trabalho chama a atenção para os sistemas de vedações horizontais internas e a preocupação com outros materiais da construção civil cujo impacto é tão preocupante quando o do cimento.ABSTRACT: The growing need to provide savings and increase productivity in the construction industry has encouraged the search for alternative means and methods, increasing the pursuit for more efficient materials, especially under the aspect of environmental sustainability. The objective of this work is to quantify the CO2 emissions of the internal horizontal sealing systems used in residential buildings, or more accurately, ceiling linings of gypsum plasterboard and PVC, compared to the timber lining. To reach this objective, the ACVCO2 methodology was applied, with hybrid analysis, secondary data and following commercial standards. The timber lining system presented emissions 26% higher than that of PVC and 67% higher than that of gypsum. This paper draws attention to the internal horizontal sealing systems and the concern with other building materials whose impact is as concerning as that of cement.

scholarly journals A study on carbon emission calculation of residential buildings based on whole life cycle evaluation

2021 ◽  
Vol 261 ◽  
pp. 04013
Author(s):  
Mei Shang ◽  
Haochen Geng
Keyword(s):  
Life Cycle ◽  
Carbon Emissions ◽  
Carbon Emission ◽  
Building Materials ◽  
Residential Buildings ◽  
Calculation Model ◽  
Evaluation Theory ◽  
Calculation Results ◽  
Whole Life Cycle ◽  
Materials Preparation

The whole life cycle carbon emission of buildings was calculated in this paper. Based on the whole life cycle evaluation theory, a carbon emission calculation model was established by using a single urban building as an example. The whole life cycle building of carbon emission calculation includes five stages: planning and design, building materials preparation, construction, operational maintenance, as well as dismantlement. It provides a reference for standardizing the calculation process of building carbon emissions by analyzed the carbon emissions and composition characteristics of each stage of the life cycle of the case house. The calculation results demonstrate that the carbon emission during the operational maintenance and building materials preparation stages in the whole life cycle of the building account for 78.05% and 20.59% respectively. These are the two stages with the greatest emission reduction potential.

scholarly journals Gypsum, Geopolymers, and Starch—Alternative Binders for Bio-Based Building Materials: A Review and Life-Cycle Assessment

2020 ◽  
Vol 12 (14) ◽  
pp. 5666 ◽  
Author(s):  
Girts Bumanis ◽  
Laura Vitola ◽  
Ina Pundiene ◽  
Maris Sinka ◽  
Diana Bajare
Keyword(s):  
Thermal Conductivity ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Construction Industry ◽  
Building Materials ◽  
Initial Moisture Content ◽  
Limited Application ◽  
Ecological Building ◽  
Thermal Conductivity Λ

To decrease the environmental impact of the construction industry, energy-efficient insulation materials with low embodied production energy are needed. Lime-hemp concrete is traditionally recognized as such a material; however, the drawbacks of this type of material are associated with low strength gain, high initial moisture content, and limited application. Therefore, this review article discusses alternatives to lime-hemp concrete that would achieve similar thermal properties with an equivalent or lower environmental impact. Binders such as gypsum, geopolymers, and starch are proposed as alternatives, due to their performance and low environmental impact, and available research is summarized and discussed in this paper. The summarized results show that low-density thermal insulation bio-composites with a density of 200–400 kg/m3 and thermal conductivity (λ) of 0.06–0.09 W/(m × K) can be obtained with gypsum and geopolymer binders. However, by using a starch binder it is possible to produce ecological building materials with a density of approximately 100 kg/m3 and thermal conductivity (λ) as low as 0.04 W/(m × K). In addition, a preliminary life cycle assessment was carried out to evaluate the environmental impact of reviewed bio-composites. The results indicate that such bio-composites have a low environmental impact, similar to lime-hemp concrete.

Energy Consumption and Environmental Benefits Valuation of Wood-Frame Architecture

2012 ◽  
Vol 518-523 ◽  
pp. 4425-4430
Author(s):  
Li Ping He ◽  
Yu Chen ◽  
Xue Ru Wang
Keyword(s):  
Life Cycle ◽  
Energy Consumption ◽  
Environmental Pollution ◽  
Construction Industry ◽  
Building Materials ◽  
Environmental Benefits ◽  
Environmental Footprint ◽  
Frame Building ◽  
Wood Frame

The enormous consumption of resources and energy of construction industry results in severe environmental pollution. From both the views of energy consumption and environmental footprint, this article analyzed theoretically the energy consumption and environmental benefits on life cycle of wood-frame building, in order to determine the general impact on environment by appropriate building materials, so that some ideas for development of wood-frame architecture can be concluded.

scholarly journals Sustainable Reuse of Military Facilities with a Carbon Inventory: Kinmen, Taiwan

2019 ◽  
Vol 11 (6) ◽  
pp. 1810
Author(s):  
Hua-Yueh Liu
Keyword(s):  
Life Cycle ◽  
Carbon Footprint ◽  
Carbon Emissions ◽  
Building Materials ◽  
Cell System ◽  
Military Government ◽  
Low Carbon ◽  
Water Shortages ◽  
Military Facilities ◽  
Construction Operation

Military government was lifted from Kinmen in 1992. The opening-up of cross-strait relations transformed the island into a tourist destination. This transformation led to electricity and water shortages in Kinmen. With the reduction in the number of troops, military facilities fell into disuse and are now being released for local government use. The aim of this project was to monitor the carbon footprint of a reused military facility during renovation of the facility. The LCBA-Neuma system, a local carbon survey software developed by the Low Carbon Building Alliance (LCBA) and National Cheng Kung University in Taiwan, was used in this project. The system analyzes the carbon footprint of the various phases of the building life cycle (LC) during renovation and carbon compensation strategies were employed to achieve the low carbon target. This project has pioneered the transformation of a disused military facility using this approach. The carbon footprint of energy uses during post-construction operation (CFeu) accounted for the majority of carbon emissions among all stages, at 1,088,632.19 kgCO2e/60y, while the carbon footprint of the new building materials (CFm) was the second highest, at 214,983.66 kgCO2e/60y. Installation of a solar cell system of 25.2 kWp on the rooftop as a carbon offset measure compensated for an estimated 66.1% of the total life-cycle carbon emissions. The findings of this study show that the process of reusing old military facilities can achieve the ultimate goal of zero carbon construction and sustainable development.

scholarly journals Comparative Whole Building Life Cycle Assessment of Energy Saving and Carbon Reduction Performance of Reinforced Concrete and Timber Stadiums—A Case Study in China

2020 ◽  
Vol 12 (4) ◽  
pp. 1566 ◽  
Author(s):  
Yu Dong ◽  
Tongyu Qin ◽  
Siyuan Zhou ◽  
Lu Huang ◽  
Rui Bo ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Reinforced Concrete ◽  
Energy Saving ◽  
Carbon Emissions ◽  
Building Materials ◽  
Energy Use ◽  
Rc Buildings ◽  
Carbon Reduction ◽  
The Government

Many stadiums will be built in China in the next few decades due to increasing public interest in physical exercise and the incentive policies issued by the government under its National Fitness Program. This paper investigates the energy saving and carbon reduction performance of timber stadiums in China in comparison with stadiums constructed using conventional building materials, based on both life cycle energy assessment (LCEA) and life cycle carbon assessment (LCCA). The authors select five representative cities in five climate zones in China as the simulation environment, simulate energy use in the operation phase of stadiums constructed from reinforced concrete (RC) and timber, and compare the RC and timber stadiums in terms of their life cycle energy consumption and carbon emissions. The LCEA results reveal that the energy saving potential afforded by timber stadiums is 11.05%, 12.14%, 8.15%, 4.61% and 4.62% lower than those of RC buildings in “severely cold,” “cold,” “hot summer, cold winter,” “hot summer, warm winter,” and “temperate” regions, respectively. The LCCA results demonstrate that the carbon emissions of timber stadiums are 15.85%, 15.86%, 18.88%, 19.22% and 22.47% lower than those of RC buildings for the regions above, respectively. This demonstrates that in China, timber stadiums have better energy conservation and carbon reduction potential than RC stadiums, based on life cycle assessment. Thus, policy makers are advised to encourage the promotion of timber stadiums in China to achieve the goal of sustainable energy development for public buildings.

The Life Cycle Routes for the Green Residential Buildings in China’s Low-Carbon City Background

2011 ◽  
Vol 347-353 ◽  
pp. 1387-1390 ◽  
Author(s):  
Xiao Jia Gao
Keyword(s):  
Life Cycle ◽  
Construction Industry ◽  
Emission Reduction ◽  
Residential Buildings ◽  
Energy System ◽  
Low Carbon ◽  
Government Function ◽  
Low Carbon City

Construction industry is an important tache and constitute in low-carbon city and emission reduction. Under the background of China’s low-carbon city, this paper has summed up the features of green residential buildings, and proposed the effective routes for the construction green residential buildings during life cycle, finally some suggestions were given from energy system, technologies and the point of government function.

scholarly journals Comparing Three Building Life Cycle Assessment Tools for the Canadian Construction Industry

2021 ◽  
Author(s):  
Hayley Cormick
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Construction Industry ◽  
Carbon Emissions ◽  
Black Box ◽  
Assessment Tools ◽  
Life Cycle Assessments ◽  
Bill Of Materials ◽  
Building Life Cycle

This research aims to contribute to quantifying whole building life cycle assessment using various software tools to determine how they can aid the construction industry in reducing carbon emissions, and in particular embodied emissions, through analysis and reporting. The conducted research seeks to examine and compare three whole building life cycle assessment tools; Athena Impact Estimator, Tally and One-Click LCA to relate the input variability to the outputs of the three programs. The three whole building life-cycle assessments were conducted using a case study building with an identical bill of materials and compared to determine the applicability and strengths of one program over another. The research confirmed that the three programs output significantly different results given the variability in scope, allowable program inputs and generated “black-box” back-end calculations, where the outputted whole building life cycle carbon equivalents of One-Click LCA is less than half than of Tally meaning the programs outputs cannot be simply compared side-by-side.

scholarly journals A Comparative Study on the Life Cycle Assessment of New Zealand Residential Buildings

Buildings ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 50
Author(s):  
Aflah Alamsah Dani ◽  
Krishanu Roy ◽  
Rehan Masood ◽  
Zhiyuan Fang ◽  
James B. P. Lim
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
New Zealand ◽  
Carbon Emissions ◽  
Residential Buildings ◽  
Dominant Form ◽  
Global Pandemic ◽  
Significant Difference ◽  
Cradle To Cradle ◽  
The Difference

In New Zealand, housing is typically low density, with light timber framing being the dominant form of construction with more than 90% of the market. From 2020, as a result of the global pandemic, there was a shortage of timber in New Zealand, resulting in increased popularity for light steel framing, the main alternative to timber for housing. At the same time, the New Zealand government is committed to sustainability practises through legislation and frameworks, such as the reduction of whole-of-life carbon emissions for the building industry. New Zealand recently announced reducing its net greenhouse gas emissions by 50% within 2030. Life cycle assessment (LCA) is a technique for assessing the environmental aspects associated with a product over its life cycle. Despite the popularity of LCA in the construction industry of New Zealand, prior research results seem varied. There is no unified NZ context database to perform an LCA for buildings. Therefore, in this paper, a comprehensive study using LCA was conducted to quantify and compare the quantity of carbon emissions from two commonly designed houses in the Auckland region, one built from light timber and the other from light steel, both designed for a lifespan of 90 years. The cradle-to-cradle system boundary was used for the LCA. From the results of this study, it was found that the light steel house had 12.3% more carbon in total (including embodied and operational carbons) when compared to the light timber house, of which the manufacturing of two houses had a difference of 50.4% in terms of carbon emissions. However, when the end-of-life (EOL) analysis was included, it was found that the extra carbon could be offset due to the steel’s recyclability, reducing the amount of embodied carbon in the manufacturing process. Therefore, there was no significant difference in carbon emissions between the light steel and the light timber building, with the difference being only 12.3%.

scholarly journals Discussion on Applicability and Requirements for the Installation of Fastenings Using Robot Systems in the Construction Industry

2020 ◽  
Vol 51 (1) ◽  
pp. 1-8
Author(s):  
Arnim Johannes Spengler ◽  
Panagiotis Spyridis ◽  
Tobias Bruckmann ◽  
Alexander Malkwitz ◽  
Dirk Schlüter
Keyword(s):  
Construction Industry ◽  
Building Materials ◽  
Structural Safety ◽  
Construction Site ◽  
High Quality ◽  
Robot Systems ◽  
Increase Productivity ◽  
Precast Construction ◽  
The University ◽  
Creative Construction

Since robotics is becoming increasingly widespread in the construction industry, more phases and working steps should be investigated for their applicability to automation. Ideally, only few robot systems would be needed and thus be multifunctional.Current robot systems are used almost exclusively in precast construction. At the construction site, only prototypes are in use, and only individual parts of the building shell construction and assembly can be handled.This paper examines to what extent robots can be applied for the installation of fastenings and which boundary conditions exist or need to be addressed. Automated construction, and more precise installation of fastenings, has been partially implemented, which has been shown to increase productivity as well as installation quality, and therefore the components’ structural safety. This knowledge must now be extended to robots. The present work is based on an overview of current research and development and includes a discussion on the current research at the University Duisburg-Essen on a cable robot for brickwork construction. It further demonstrates that fastenings pose an important additional application, especially to ensure the changeover to other building materials. These can be built-in parts, but also brickwork connections or prefabricated parts.It can be assumed that robots will become increasingly important in the construction industry for reasons that include high quality, safety, speed and economic aspects.This is an extended paper of the Creative Construction Conference in Budapest on “Examination of Advanced Fastening Systems for the use of Robots in the Construction Industry” (Spyridis et al., 2019).

scholarly journals Case Study: LCA Methodology Applied to Materials Management in a Brazilian Residential Construction Site

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
João de Lassio ◽  
Josué França ◽  
Kárida Espirito Santo ◽  
Assed Haddad
Keyword(s):  
Life Cycle ◽  
Construction Industry ◽  
Environmental Impacts ◽  
Building Materials ◽  
Raw Materials ◽  
Construction Materials ◽  
Ceramic Materials ◽  
Environmental Indicators ◽  
Life Cycle Thinking ◽  
Lca Methodology

The construction industry is increasingly concerned with improving the social, economic, and environmental indicators of sustainability. More than ever, the growing demand for construction materials reflects increased consumption of raw materials and energy, particularly during the phases of extraction, processing, and transportation of materials. This work aims to help decision-makers and to promote life cycle thinking in the construction industry. For this purpose, the life cycle assessment (LCA) methodology was chosen to analyze the environmental impacts of building materials used in the construction of a residence project in São Gonçalo, Rio de Janeiro, Brazil. The LCA methodology, based on ISO 14040 and ISO 14044 guidelines, is applied with available databases and the SimaPro program. As a result, this work shows that there is a substantial waste of nonrenewable energy, increasing global warming and harm to human health in this type of construction. This study also points out that, for this type of Brazilian construction, ceramic materials account for a high percentage of the mass of a total building and are thus responsible for the majority of environmental impacts.

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