scholarly journals Wall Panel Made of Bio-composites

2019 ◽  
Vol 279 ◽  
pp. 02010
Author(s):  
Lukáš Bosák ◽  
Milan Palko
Keyword(s):  
Composite Materials ◽  
Composite Laminates ◽  
Building Materials ◽  
Building Industry ◽  
Environmental Load ◽  
Wall Panel ◽  
Outer Envelope ◽  
Composite Wall ◽  
Materials Used ◽  
The Eu

Sustainability is currently an important part of the building industry. The development of new building constructions and the use of ecological materials is a very popular topic in this area. One example of organic material are natural fibres bio-composites. Bio-composite materials are currently used in the form of laminates mainly used in the sport and furniture industries. This article addresses their use in the building industry as the outer envelope of buildings. The article deals with the testing of the influence of UV radiation and moisture on the degradation of Bio-composites with recommendation of possible ways of their protection. In the next section, it deals with the design of composite wall panel with Bio-composite laminates on the top layer. This panel will contain mycelium as thermal insulation. The assumption of the use of this type of construction in the building industry is based on the possibility of replacing conventional materials used nowadays and reducing the environmental load by the building industry. The use of new types of eco-friendly building materials is in accordance with the EU strategy.

Investigation on the thermal insulation properties of lightweight biocomposites based on lignocellulosic residues and natural polymers

2017 ◽  
Vol 31 (11) ◽  
pp. 1497-1509 ◽  
Author(s):  
Petronela Nechita ◽  
Ştefania Miţa Ionescu
Keyword(s):  
Thermal Conductivity ◽  
Composite Materials ◽  
Thermal Insulation ◽  
Building Materials ◽  
Low Cost ◽  
Absorption Capacity ◽  
Building Industry ◽  
Natural Polymers ◽  
Lignocellulosic Residues ◽  
Composite Samples

Due to their advantages (low cost, non-toxic, biodegradable, abundant, low density and very good mechanical properties), the lignocellulosic residues were widely used in the last time as reinforcements in composite materials with applications in the building industry. Besides these wastes, expanded perlite (EP) and natural polymers are promising candidates for the building industry, based on their specific characteristics and economic advantages. In this article, the results are presented regarding the thermal insulation properties of composite materials based on EP and natural polymers (starch polymer matrix reinforced with lignocellulosic wastes). The samples of composite materials were obtained from the laboratory and characterized in terms of the main specific properties of building materials, such as thermal conductivity/resistance, water absorption capacity, apparent density and image analyses by scanning electron microscopy. The obtained results have highlighted the values for thermal conductivity of composite samples between 0.05 and 0.11 (W/mK), similar to those materials currently used in building thermal insulation.

TRADITIONAL OUTBUILDINGS OF THE MORDOVIANS

2019 ◽  
Vol 15 (2) ◽  
pp. 154-165 ◽  
Author(s):  
Elena N. Mokshina ◽  
Mihail I. Svyatkin
Keyword(s):  
Ethnic Group ◽  
Economic Activity ◽  
Building Materials ◽  
Animal Feed ◽  
Economic Activities ◽  
Important Place ◽  
Main Building ◽  
Genetic Problem ◽  
Materials Used ◽  
Functional Purpose

Introduction. The article deals with the main traditional outbuildings of the Mordvinians, reported on their functional purpose in economic activity. The forms and types of outbuildings, as well as the main building materials used by Mordvinians are described in details. Their significance in the religious and ceremonial life of the ethnic group is shown. Materials and Methods. The research is based on traditional methods of ethnographic science, such as field observation, survey and interviews, and a comprehensive approach. Among the methods of historical science comparative-historical, historical-genetic, problem-chronological, structural-system were used. Among the general scientific methods of research logical, descriptive, narrative, generalization, classification and systematization were involved. To achieve the results of the study, the materials collected by the authors in the course of field surveys conducted in the Mordovian villages were mainly used. Results and Discussion. Traditional outbuildings were of great importance in the economic activity of the Mordovian ethnic group. According to their functional purpose, they can be divided into the following groups: for livestock and poultry (stable, chicken coop, stable, kalda), sanitary and hygienic (bath), warehouse buildings for storage of food, utensils, firewood, animal feed (barn, cellar, woodshed, hayloft), for processing of grain (sheep, riga, mill). Depending on the welfare and financial capacity of the family, the number of outbuildings was different. As a rule, the wealthier families had more outbuildings than the less wealthier ones. The main building material for the construction of these buildings was wood. Conclusion. Thus, the traditional outbuildings of the Mordvinians occupied an important place in its economic activities. At the same time, each of them had its own purpose and performed certain functions. Some buildings, such as a bath and a barn, had not only economic purpose, but also were the venue for a number of prayers and ceremonies. It is now ordinarily they have banya (bath-house), outdoor courtyard with standing in different places sheds, barn and cellar.

scholarly journals Architectural ruins: geoculture of the anatomy of buildings as illustrated by Casa Ippolito, Malta

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Lino Bianco
Keyword(s):  
Material Culture ◽  
Building Materials ◽  
Raw Materials ◽  
Primary Source ◽  
Secondary Sources ◽  
Non Invasive ◽  
History Of ◽  
Aerial Vehicle ◽  
Materials Used ◽  
Building Physics

AbstractRuins are a statement on the building materials used and the construction method employed. Casa Ippolito, now in ruins, is typical of 17th-century Maltese aristocratic country residences. It represents an illustration of secondary or anthropogenic geodiversity. This paper scrutinises these ruins as a primary source in reconstructing the building’s architecture. The methodology involved on-site geographical surveying, including visual inspection and non-invasive tests, a geological survey of the local lithostratigraphy, and examination of notarial deeds and secondary sources to support findings about the building’s history as read from its ruins. An unmanned aerial vehicle was used to digitally record the parlous state of the architectural structure and karsten tubes were used to quantify the surface porosity of the limestone. The results are expressed from four perspectives. The anatomy of Casa Ippolito, as revealed in its ruins, provides a cross-section of its building history and shows two distinct phases in its construction. The tissue of Casa Ippolito—the building elements and materials—speaks of the knowledge of raw materials and their properties among the builders who worked on both phases. The architectural history of Casa Ippolito reveals how it supported its inhabitants’ wellbeing in terms of shelter, water and food. Finally, the ruins in their present state bring to the fore the site’s potential for cultural tourism. This case study aims to show that such ruins are not just geocultural remains of historical built fabric. They are open wounds in the built structure; they underpin the anatomy of the building and support insights into its former dynamics. Ruins offer an essay in material culture and building physics. Architectural ruins of masonry structures are anthropogenic discourse rendered in stone which facilitate not only the reconstruction of spaces but also places for human users; they are a statement on the wellbeing of humanity throughout history.

Field temperature and moisture loads from a building envelope as the basis for accelerated aging of barrier membranes

2019 ◽  
Vol 46 (11) ◽  
pp. 969-978 ◽  
Author(s):  
Marzieh Riahinezhad ◽  
Augusta Eve ◽  
Marianne Armstrong ◽  
Peter Collins ◽  
J.-F. Masson
Keyword(s):  
Building Materials ◽  
National Research Council ◽  
Accelerated Aging ◽  
Bimodal Distribution ◽  
Building Envelope ◽  
Rate Of Change ◽  
Single Family ◽  
Field Exposure ◽  
Aging Conditions ◽  
Materials Used

Temperature and relative humidity (RH) data within the building envelope of a single-family home at the National Research Council of Canada’s Canadian Centre for Housing Technology were collected over five years. We report on the distribution, rate of change, and the limits of temperature and moisture variations for south-easting wall and south-facing wall and roof systems to better understand the in-situ environmental conditions to which building materials and components typical of homes in North America may be subjected. Over an average year, wall temperature varied from −25 °C to +45 °C, and temperature followed a bimodal distribution, with maxima at 0 °C to 5 °C and 15 °C to 20 °C. Each maximum represented about 1100 h of field exposure. Roof temperatures, which spanned a temperature range from −35 °C to 75 °C, did not show a Gaussian distribution but were characterized as being multi-modal. From values of temperature and RH, absolute moisture contents within the building envelope were found to range between 1 and 55 g/m3, with the most common values being 6–8 g/m3. The application of this information is discussed and related to the development of realistic accelerated aging conditions to obtain a more accurate durability assessment of building envelope materials used in Canadian dwellings.

scholarly journals Life Cycle Environmental Assessment of Light Steel Framed Buildings with Cement-Based Walls and Floors

2020 ◽  
Vol 12 (24) ◽  
pp. 10686
Author(s):  
Mona Abouhamad ◽  
Metwally Abu-Hamd
Keyword(s):  
Life Cycle ◽  
Building Materials ◽  
Simulation Software ◽  
Life Cycle Assessment Methodology ◽  
Building Information Model ◽  
Building Information ◽  
Cold Formed Steel ◽  
Environmental Measures ◽  
Materials Used

The objective of this paper is to apply the life cycle assessment methodology to assess the environmental impacts of light steel framed buildings fabricated from cold formed steel (CFS) sections. The assessment covers all phases over the life span of the building from material production, construction, use, and the end of building life, in addition to loads and benefits from reuse/recycling after building disposal. The life cycle inventory and environmental impact indicators are estimated using the Athena Impact Estimator for Buildings. The input data related to the building materials used are extracted from a building information model of the building while the operating energy in the use phase is calculated using an energy simulation software. The Athena Impact Estimator calculates the following mid-point environmental measures: global warming potential (GWP), acidification potential, human health potential, ozone depletion potential, smog potential, eutrophication potential, primary and non-renewable energy (PE) consumption, and fossil fuel consumption. The LCA assessment was applied to a case study of a university building. Results of the case study related to GWP and PE were as follows. The building foundations were responsible for 29% of the embodied GWP and 20% of the embodied PE, while the CFS skeleton was responsible for 30% of the embodied GWP and 49% of the embodied PE. The production stage was responsible for 90% of the embodied GWP and embodied PE. When benefits associated with recycling/reuse were included in the analysis according to Module D of EN 15978, the embodied GWP was reduced by 15.4% while the embodied PE was reduced by 6.22%. Compared with conventional construction systems, the CFS framing systems had much lower embodied GWP and PE.

Surface Charging Considerations for Composite Materials Used in Spacecraft Applications

2015 ◽  
Vol 43 (9) ◽  
pp. 2901-2906
Author(s):  
Justin J. Likar ◽  
Robert E. Lombardi ◽  
Alexander L. Bogorad ◽  
Roman Herschitz
Keyword(s):  
Composite Materials ◽  
Surface Charging ◽  
Materials Used

scholarly journals Characteristic of materials for the 3D printed building constructions by additive printing

2018 ◽  
Vol 222 ◽  
pp. 01013 ◽  
Author(s):  
Katarzyna Pacewicz ◽  
Anna Sobotka ◽  
Łukasz Gołek
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
New Technology ◽  
Setting Time ◽  
Three Dimensional ◽  
Construction Site ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
Materials Used ◽  
Dimensional Printing

Three dimensional printing is a promising new technology to erect construction objects. Around the world in every moment a new prototypes constructions are made by using this method. Three dimensional printing is taken into account as technology which can be used to print constructions in automated way on the Moon or Mars. The raw materials, which can be used with three dimensional printing have to fulfil basic requirements for those which are used in construction. That means that components of printing mortars are made from ingredients easily accessible in area nearby construction site and can be reusable. The cost of printing building objects due to that requirements is comparable to costs of traditional building, which are currently available. However additive techniques of printing needs a dedicated mortars for printer supplying. Characteristic for such mortars is: setting time, compressive strength, followability in the printing system, shape stability of every printed layer, controlling the hydration rate to ensure bonding with the subsequent layer, reusable capabilities, easily accessible raw materials, cost of such mixtures shouldn’t be too high in order to keep 3D printing competitive for traditional ways of building, mortar components should be recyclable and printing process should not influence negatively on an environment and people. All properties of printing mortars are determined by the device for additive application method. In this paper review of available materials used for three dimensional printing technology at construction site is presented. Presented materials were analysed in terms of requirements for building materials technology. Due to the lack of detailed information’s in available literature, regarding to the properties of raw materials, the results of this analysis may be used in the designing of new concrete mixtures for the use in three-dimensional printing technology for construction.

Sign in / Sign up

Export Citation Format

Share Document