scholarly journals Contemporary wooden architecture in search of free form

2018 ◽  
Vol 16 (4) ◽  
pp. 159-168
Author(s):  
Michał Golański
Keyword(s):  
Building Materials ◽  
Human Life ◽  
Construction Materials ◽  
Point Of View ◽  
Digital Design ◽  
Free Form ◽  
Relative Contraction ◽  
Architectural Structures ◽  
Complex Forms ◽  
Materials Used

Creation of modern architecture in accordance with the precepts of sustainable development requires an integrated and synergistic design for both new-built and refurbished buildings. The buildings should demonstrate not only the aesthetics, functionality and durability but also have harmless impact on the environment, be effective in material and energy consumption and take into account any risk factors from the point of view of human life and health. Wood, one of the oldest construction materials used by man is present in the built environment from the beginning of the history of architecture. Modernism was characterized by the gradual displacement of wood by other building materials: ceramics, concrete and steel. Physical properties, ease of shaping and effortless process of production, combined with the exceptional ecological potential of wood make wooden structures are widespread again after a period of relative contraction. Creating complex forms in the contemporary architecture and the development of digital design tools coupled with computer technology and CNC woodworking give designers new possibilities for shaping architectural forms. Curvilinear architecture (free form design) rejects Cartesian geometry and conventional language of Euclidean shapes. This article analyzes architectural structures characterized by curvilinear forms and the use of wood as a building material of construction.

scholarly journals Susceptibility of earth-based construction materials to fungal proliferation: laboratory and in situ assessment

2019 ◽  
Vol 3 ◽  
pp. 140-149 ◽  
Author(s):  
Alexis Simons ◽  
Alexandra Bertron ◽  
Christophe Roux ◽  
Aurélie Laborel-Préneron ◽  
Jean-Emmanuel Aubert ◽  
...  
Keyword(s):  
Air Quality ◽  
Manufacturing Process ◽  
Building Materials ◽  
Construction Materials ◽  
Microbial Density ◽  
Microbial Proliferation ◽  
Materials Used ◽  
Ecological Construction ◽  
The Impact

The impact of building materials on the environment and the health of occupants is nowadays a priority issue. Ecological construction materials such as earthen materials are currently experiencing a regain of interest due to both ecological and economic factors. The microbial proliferation on indoor materials can induce a deterioration of the building air quality and lead to an increase of health risks for the occupants. The issue of indoor air quality raises questions about the use of earthen building materials and their possible susceptibility to fungal development. The microflora of earthen materials and their ability to grow on such support are indeed poorly studied. This study focused on the quantification of both bacterial and fungal microflora along the manufacturing process. The impact of extreme humidity, simulating a hydric accident, on microflora development was analyzed on the surface and inside earthen bricks. The initial microflora of these materials was dramatically reduced during the manufacturing process, especially after heat treatment for drying. Proliferation of remaining microorganisms was only observed under high humidity condition, in particular for earthen materials with vegetal aggregates. Moreover, in situ samplings were performed on naturally dried earthen materials used in buildings. The characterization of the microbial density revealed a higher microbial density than on manufactured specimens, while microbial concentration and detected taxa seemed mainly related to the room use and building history. These results provide a better understanding of microbial proliferation on these materials.

Environmental Analysis of Construction Materials

2020 ◽  
pp. 90-110 ◽  
Author(s):  
Aysem Berrin Cakmakli
Keyword(s):  
Building Materials ◽  
Sustainable Design ◽  
Construction Materials ◽  
Living Environment ◽  
Point Of View ◽  
Synthetic Materials ◽  
Environmental Product Declarations ◽  
Environmental Life Cycle Assessment ◽  
Construction Activity ◽  
Combustion Pollutants

There is a growing universal awareness of protecting the living and non-living environment and making enlightened decisions to achieve a sustainable development without destruction of the natural resources. In this point of view, selecting building materials according to their energy and health performances gains importance in sustainable design. 3Rs (reducing, reusing, recycling), and supplying a healthy, non-hazardous indoor air for building occupants are two important parameters of environmental life-cycle assessment for materials. Information on exposure to gases and vapors from synthetic materials made from petrochemicals, to heavy metals and pesticides, and to some combustion pollutants that cause acid rain should be determined by analyzing environmental product declarations or material specifications. After studying on building materials individually, they are analyzed in the form of tables for four different stages; manufacturing, application, usage, demolition phase. Consequently, this chapter can guide the designer and engineer to think on the elements of design and construction activity.

scholarly journals A Novel Method for nZEB Internal Coverings Design Based on Neural Networks

Coatings ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 288 ◽  
Author(s):  
José A. Orosa ◽  
Diego Vergara ◽  
Ángel M. Costa ◽  
Rebeca Bouzón
Keyword(s):  
Building Materials ◽  
International Energy Agency ◽  
Construction Materials ◽  
Real Data ◽  
Point Of View ◽  
Building Construction ◽  
Sampled Data ◽  
Energy Agency ◽  
Vapour Permeability ◽  
Weather Changes

Research from the International Energy Agency about indoor ambiences and nearly zero energy buildings (nZEB) in the past has been centred on different aspects such as the prediction of indoor conditions as a function of the weather using laboratory material properties for simulations and real sampled data for validation. Thus, it is possible to use real data for defining behavioural groups of indoor ambiences as a function of real vapour permeability of internal coverings. However, this method is not suitable for modelling it and predicting its behaviour under weather changes, which is of interest to improve the method of selection and use of building construction materials. In this research, artificial intelligence procedures were employed as the first model of permeable coverings material behaviour to provide a newer understanding of building materials and applications for the generation of new control procedures between the mechanical and electronic point of view of building construction materials.

scholarly journals Strength, sustainability and affordability of bamboo and mud bricks as materials used in local construction

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Leopold Mbereyaho ◽  
Jean de Dieu Mutabaruka ◽  
Abaho G. Gershome ◽  
Armel Ineza ◽  
Ezra Ngirabatware
Keyword(s):  
Compressive Strength ◽  
Cost Estimation ◽  
Building Materials ◽  
Construction Materials ◽  
Conventional Concrete ◽  
Environment Friendly ◽  
Study Results ◽  
Mud Bricks ◽  
Materials Used ◽  
Sisal Fibers

The construction industry is one of the rapidly growing and the cost analysis suggests that the materials cost is constantly increasing. The continuous extraction of aggregates intensively used in the field is negatively acting to the environment. Therefore research in construction materials should focus not only on discovering new alternative materials but also in appreciating the quality of those locally available for their better application. This research aimed at evaluating the performance of bamboo and mud bricks as two available local building materials, especially with regards not only to their strength but also to new performance concepts which are affordability, energy efficiency and environment friendly aspects. The study comprised mainly of laboratory tests of used materials and cost estimation analysis. Study results established that the considered bamboo and mud bricks, made in ordinary soils and reinforced by sisal fibers were reusable, environment friendly materials and energy efficient, with the bamboo showing the thermal conductivity equal to 0.1496 W/mK. Regarding the compressive strength, reinforced mud bricks with sisal fibers showed an increased value from 1.75 MPA to 4.29MPA, what was in line with related previous studies. The average compressive strength of the studied Arundinaria Alpine bamboo was established at 133,7MPA, while its tensile strength was 88.16MPA and these values were reasonable with comparison to other conventional materials. It is recommended that further research in checking the performance of other types of bamboo as well as about new construction technologies be undertaken in order to enhance the service life of both bamboo and mud bricks.Keywords: Affordability, Bamboo, Conventional concrete, Materials strength, Mud reinforced bricks, Sustainability

scholarly journals Geo-Environmental investigation of Sahure pyramid complex, Abusir Archeological site, Giza, Egypt

2021 ◽  
Author(s):  
Abdelrhman Muhamed Fahmy Sayed Ahmed ◽  
Fatma Muhamed Helmy
Keyword(s):  
Building Materials ◽  
Construction Materials ◽  
Polarized Light ◽  
Archaeological Site ◽  
Field Studies ◽  
Point Of View ◽  
Western Side ◽  
The Impact ◽  
Archeological Site ◽  
Engineering Stability

Abstract Abusir is the name of an elaborate burial area, dotted with 19 pyramids other temples, stretching on the western side of the Nile from the south of the Giza Plateau to the northern rim of Saqqara. It seems to have been created as the resting site for the Pharaos dated from 2494 to 2345 BC. The name Abusir, originally spoken as Busiri, means” temple of Osiris”. Over time, the name has become so popular, that more than 60 villages now carry this name. But only one is the archaeological site. This paper does not refer to all of the Abusir archaeological area, but focuses one of its most important sites: Sahure pyramid, one of Egypt’s little known, but heavily damaged treasure. One of the highlights of the relevant research is the discovery of a piece of cement (Basaltic mortar/concrete), which consists of several materials and which is harder than any cement produced today and detection of a clear and significant Anorthite mineral (Plagioclase) in the mortar sample which had been proven by XRD, XRF (analysis) and Polarized light microscope (investigation). The main objectives of this paper are 1) to reveal and identify the construction materials of the pyramid and the construction of the pyramid,2) to evaluate the durability and vulnerability of the Ancient construction materials of Sahure pyramid,3) to compare the decayed patterns of the different construction materials, 4) to study the pyramid building materials from geological, meteorological, geochemical, petrological and petrophysical point of view, and 5) to present a proposal for scientific conservation and protection of the pyramid. Laboratories and field studies have been carried out by researchers from various countries to investigate and understand the problems of the pyramid leading to the final results which confirmed the impact of the geo environment conditions on the structural and engineering stability of the pyramid.

scholarly journals Characterization of clay deposits in the Adrar region, with a view to their valorization in the building materials industry

2018 ◽  
Vol 149 ◽  
pp. 01079
Author(s):  
Abbou Mohammed ◽  
Moulay Omar Hassan ◽  
Semcha Abdélaziz ◽  
Kazi-Aoual Fatiha
Keyword(s):  
Construction Industry ◽  
Building Materials ◽  
Local Development ◽  
Construction Materials ◽  
Sedimentary Basins ◽  
Point Of View ◽  
Clay Deposits ◽  
Algerian Sahara ◽  
Local Materials

In the context of sustainable local development of the Adrar region, one of the largest regions in the Algerian Sahara. The search for local useful substances has been initiated by the Algerian state to cover the need for building materials in the construction industry. However, from a geological point of view, the Adrar zone is located in the extension of the primary chain of the Ougarta which separates two sedimentary basins of Reggane and Timimoun, as well as the basin of Sbâa. In this context, an experimental study is focused on the characterization of clay deposits, with a view to their valorization in the construction materials industry (ceramics) sector, with the aim of contributing to the use of local materials.

scholarly journals Progress of Building Materials and Foundation Engineering in Ancient Iraq

2012 ◽  
Vol 446-449 ◽  
pp. 220-241
Author(s):  
Al Taie Entidhar ◽  
Al Ansari Nadhir ◽  
Sven Knutsson
Keyword(s):  
Critical Review ◽  
Life Style ◽  
Building Materials ◽  
Construction Materials ◽  
Foundation Engineering ◽  
Agricultural Activities ◽  
Natural Materials ◽  
Ancient Mesopotamia ◽  
Materials Used ◽  
Engineering Practices

Humans realised the importance of housing since the dawn of history. The first man used the caves as shelter. When agricultural activities dominated the life style of humans, villages started to be constructed. Later these were developed into cities. The dawn of civilization started in Iraq. The inhabitants in that time used the available natural materials in their construction. Reviewing the progress of engineering practices of ancient Iraq, reveals the facts that the inhabitants were aware of the principles of construction and engineering. The materials used and the design of the buildings were very suitable from both environmental and engineering perspectives. This work is a critical review of the progress and development of engineering practices and construction materials used in ancient Mesopotamia

scholarly journals Micropalaeontology reveals the source of building materials for a defensive earthwork (English Civil War?) at Wallingford Castle, Oxfordshire

2010 ◽  
Vol 29 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Ian P. Wilkinson ◽  
Alison Tasker ◽  
Anthony Gouldwell ◽  
Mark Williams ◽  
Matt Edgeworth ◽  
...  
Keyword(s):  
Civil War ◽  
Building Materials ◽  
Construction Materials ◽  
English Civil War ◽  
The West ◽  
Road Base ◽  
River Thames ◽  
Materials Used

Abstract. Microfossils recovered from sediment used to construct a putative English Civil War defensive bastion at Wallingford Castle, south Oxfordshire, provide a biostratigraphical age of Cretaceous (earliest Cenomanian) basal M. mantelli Biozone. The rock used in the buttress – which may have housed a gun emplacement – can thus be tracked to the Glauconitic Marl Member, base of the West Melbury Marly Chalk Formation. A supply of this rock is available on the castle site or to the east of the River Thames near Crowmarsh Gifford. Microfossils provide a unique means to provenance construction materials used at the Wallingford site. While serendipity may have been the chief cause for use of the Glauconitic Marl, when compacted, it forms a strong, almost ‘road base’-like foundation that was clearly of use for constructing defensive works. Indeed, use of the Glauconitic Marl was widespread in the area for agricultural purposes and its properties may have been well-known locally.

scholarly journals Fatigue Characteristics of Materials Used in Transport Industry Applications

2019 ◽  
Vol 1 (1) ◽  
pp. 810-818
Author(s):  
Juraj Belan ◽  
Lenka Kuchariková ◽  
Magdalena Mazur ◽  
Eva Tillová ◽  
Mária Chalupová
Keyword(s):  
Cast Alloy ◽  
Human Life ◽  
Low Frequency ◽  
Fatigue Tests ◽  
Point Of View ◽  
Fatigue Properties ◽  
Major Interest ◽  
Transport Industry ◽  
Industry Applications ◽  
Materials Used

AbstractDesigners have a major interest about fatigue properties of materials used in transport industry. Each component in transport works under alternating stress. From this point of view the fatigue properties are important for single parts lifetime resulting into safety of whole components as cars and airplanes what leads to safety on the roads or air and have influence on human life as well. Therefore this paper deals with fatigue properties of wrought Inconel alloy IN 718 and aluminum cast alloy AlSi9Cu3. Both materials were put on fatigue push – pull test, but Ni – based IN 718 alloy at frequency of loading around 20 000 kHz (High Frequency High Cycles Fatigue) and aluminum alloy AlSi9Cu3 at frequency of loading around 80 Hz (Low Frequency High Cycles Fatigue). These parameters were chosen with respect of usage such materials for production of components used in transport industry applications. Results after fatigue tests are presented as Wohler curve. For prediction of source of fracture the SEM fractography analysis of fatigue fracture surfaces was made.

scholarly journals (34) Energy and Capital Costs of High Tunnel Construction

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1077A-1077
Author(s):  
Michael K. Bomford ◽  
Anthony Silvernail
Keyword(s):  
Building Materials ◽  
Construction Materials ◽  
Average Energy ◽  
Economic Incentive ◽  
Embodied Energy ◽  
High Tunnel ◽  
Capital Costs ◽  
Total Capital ◽  
Materials Used ◽  
National Organic Program

Commercial vegetable growers in Kentucky have used high tunnels for year-round production for the past decade. They suggest it is a more energy-efficient and economical means of supplying off-season vegetables to the region than trucking field-grown produce from warmer regions. In 2005, we erected a 9 × 12-m high tunnel, designed to comply with National Organic Program standards, at the Kentucky State University Research Farm. We recorded the retail cost of each component, and estimated its embodied energy using published figures for common building materials. The materials used for construction were valued at $2830, and contained 59 GJ of embodied energy. The frame and plastic cladding accounted for 36% and 24% of the total capital cost, and 28% and 37% of the embodied energy, respectively, with other components accounting for the remainder. Assuming that the frame, plastic cladding and other components last 20, 4, and 10 years, respectively, the average cost of the tunnel is $328/year, and the average energy input is 8 GJ/year. The plastic cladding accounts for 50% of the annual amortized cost, and 66% of the embodied energy. If the structure is used to grow 2000 heads of lettuce each winter, and 450 kg of early market tomatoes each spring, it could generate sufficient income to recover the total cost of construction materials in its first year. Trucking this amount of produce from California to Kentucky would consume approximately 8 GJ. We conclude that there is an economic incentive for growers to adopt this technology, but no energy efficiency advantage to society. Longer tunnels, such as the 9 × 29-m models more commonly used by commercial vegetable growers in Kentucky, will be more energy- and capital-efficient.

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