Highly Stable and Nonflammable Hydrated Salt-Paraffin Shape-Memory Gels for Sustainable Building Technology

Author(s):  
Yunchong Zhang ◽  
Feifei Wang ◽  
Joost Duvigneau ◽  
Yan Wang ◽  
Bijia Wang ◽  
...  
2013 ◽  
Vol 300-301 ◽  
pp. 1263-1266 ◽  
Author(s):  
Zhi Min Yan ◽  
Yong Fei Du ◽  
Jun Guo Huang ◽  
Yu Shun Li

Modern bamboo structural system is a new type of green sustainable building technology, conform with our country’s requirements of developing environment-protecting and energy-saving buildings. This paper presents a new lightweight, high-strength , earthquake-resistant and energy-saving system-steel-bamboo composite structural systems , and given the various structural elements of the composite structural systems of steel-bamboo production methods . This paper also gives the production methods of steel-bamboo composite elements. Steel-bamboo-structural system can per-fectly combine steel and bamboo to bear load together, and it have excellent mechanical properties and broad application prospects.


2014 ◽  
Vol 18 (1) ◽  
pp. 69-82 ◽  
Author(s):  
Maria-Paz Gutierrez

Over fifty years ago at the RIBA’s 1958 Oxford Conference, discussions about architectural research and science posed seminal questions about the very nature of creativity in architectural research and education. Leslie Martin observed that research is the tool by which theory is advanced. For more than half a century, we have seen traces of scientific research fuelling the advancement of architectural knowledge and its feedback loops into practice. Yet, interrogations around how architectural creativity is affected by intersections with the sciences are not new. The Bauhaus, for example, sought to integrate scientific thought in architectural education in 1936. Thus, why are emerging interdisciplinary collaborations where architecture, engineering and science converge at the inception of design potentially transformative?Increasing attempts to accelerate the pace of innovation in sustainable building technology is engendering pioneering intersections between architecture, engineering and natural science disciplines such as bioengineering and chemistry. The broad disciplinary breadth of these research processes inevitably requires mediating the diverse values, perspectives and research methodologies of disciplines that pursue innovation in different ways. However, to what extent is this new interdisciplinary convergence possibly transformative? Could it be that these processes, particularly in building technology innovation, may be influencing scientists and engineers to rethink how design problems are conceptualised and researched?


2021 ◽  
Vol 945 (1) ◽  
pp. 012069
Author(s):  
Abeer Samy Yousef Mohamed

Abstract In the developing world, practical steps are taken to provide adequate, sustainable housing, especially for low-income people within technological age capabilities in construction by searching for new techniques of building technology to meet that goal. In the Arab countries, contemporary housing design is particularly effective because it is the primary unit of the contemporary urban fabric and the basic cell that constitutes most of the city’s area. So the following research questions are discussed in this study: What are the challenges facing contemporary sustainable housing design in specific affordable housing for the lower-income groups? What is the potential for sustainable building technology to meet that goal considering the social and economic dimension of the COVID 19 pandemic? What are the ambitions that they set out to achieve in that house? To emphasize the essential role of sustainable building technology and techniques in acquiring and implementing different goals and actual needs of all strata of society.


Author(s):  
F. I. Grace

An interest in NiTi alloys with near stoichiometric composition (55 NiTi) has intensified since they were found to exhibit a unique mechanical shape memory effect at the Naval Ordnance Laboratory some twelve years ago (thus refered to as NITINOL alloys). Since then, the microstructural mechanisms associated with the shape memory effect have been investigated and several interesting engineering applications have appeared.The shape memory effect implies that the alloy deformed from an initial shape will spontaneously return to that initial state upon heating. This behavior is reported to be related to a diffusionless shear transformation which takes place between similar but slightly different CsCl type structures.


Author(s):  
J.M. Guilemany ◽  
F. Peregrin

The shape memory effect (SME) shown by Cu-Al-Mn alloys stems from the thermoelastic martensitic transformation occuring between a β (L2,) metastable phase and a martensitic phase. The TEM study of both phases in single and polycrystalline Cu-Al-Mn alloys give us greater knowledge of the structure, order and defects.The alloys were obtained by vacuum melting of Cu, Al and Mn and single crystals were obtained from polycrystalline alloys using a modified Bridgman method. Four different alloys were used with (e/a) ranging from 1.41 to 1.46 . Two different heat treatments were used and the alloys also underwent thermal cycling throughout their characteristic temperature range -Ms, Mf, As, Af-. The specimens were cut using a low speed diamond saw and discs were mechanically thinned to 100 μm and then ion milled to perforation at 4 kV. Some thin foils were also prepared by twin-jet electropolishing, using a (1:10:50:50) urea: isopropyl alcohol: orthophosphoric acid: ethanol solution at 20°C. The foils were examinated on a TEM operated at 200 kV.


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