scholarly journals Building Earth and Low Carbon Initiatives for Sustainable Housing in Nigeria

2018 ◽  
Vol 10 (10) ◽  
pp. 3469 ◽  
Author(s):  
Trivess Moore ◽  
Andréanne Doyon

There is a need to deliver more environmentally and socially sustainable housing if we are to achieve a transition to a low carbon future. There are examples of innovative and sustainable housing emerging around the world which challenge the deeper structures of the existing housing regime. This paper uses the analysis of socio-technical dimensions of eco-housing presented by Smith to explore the development of an emerging sustainable housing model known as Nightingale Housing in Australia within a sustainability transitions framing. While there were several similarities to Smith’s analysis (e.g., establishment of guiding principles, learning by doing), there were also some key differences, including the scaling up of sustainable housing while using tried and tested design principles, materials and technologies, and creating changes to user relations, policy, and culture. Smith’s dimensions remain a good framework for understanding sustainable housing development, but they must be located within a scaling up sustainable housing agenda. What is required now is to develop a better understanding of the processes and opportunities that such housing models offer policy makers, housing researchers, and building industry stakeholders to achieve a broader scale uptake of sustainable housing both in Australia and globally.


2011 ◽  
Vol 224 ◽  
pp. 164-169
Author(s):  
Xia Yun Li ◽  
Shi Qiang Zhao

Under the Sustainable Development Strategy, whether the project's sustainability goals can be achieved for residential building is a serious problem, which is not only related to the improvement of quality of living but also the implementation of the strategy for national energy saving and low-carbon economy. However, building sustainable housing is a new challenge for contractor. Based on the life cycle theory, this paper analysis project objective and achieves condition of sustainable development in explaining the basis of the connotation of sustainable housing, and then discuses the process of building sustainable housing under the guidance of sustainable management theory, which can provides some guidance for the achievement of sustainability goals of residential construction projects.


AEI 2013 ◽  
2013 ◽  
Author(s):  
Y. M. D. Adedeji ◽  
A. A. Taiwo ◽  
O. A. Olotuah ◽  
G. Fadairo ◽  
D. A. Ayeni

Author(s):  
A. A. Taiwo ◽  
G. Fadairo ◽  
Y. M. D. Adedeji ◽  
A. O. Olotuah

Author(s):  
G. M. Greene ◽  
J. W. Sprys

The present study demonstrates that fracture surfaces appear strikingly different when observed in the transmission electron microscope by replication and in the scanning electron microscope by backscattering and secondary emission. It is important to know what form these differences take because of the limitations of each instrument. Replication is useful for study of surfaces too large for insertion into the S.E.M. and for resolution of fine detail at high magnification with the T.E.M. Scanning microscopy reduces sample preparation time and allows large sections of the actual surface to be viewed.In the present investigation various modes of the S.E.M. along with the transmission mode in the T.E.M. were used to study one area of a fatigue surface of a low carbon steel. Following transmission study of a platinum carbon replica in the T.E.M. and S.E.M. the replica was coated with a gold layer approximately 200A° in thickness to improve electron emission.


Author(s):  
J. Y. Koo ◽  
G. Thomas

High resolution electron microscopy has been shown to give new information on defects(1) and phase transformations in solids (2,3). In a continuing program of lattice fringe imaging of alloys, we have applied this technique to the martensitic transformation in steels in order to characterize the atomic environments near twin, lath and αmartensite boundaries. This paper describes current progress in this program.Figures A and B show lattice image and conventional bright field image of the same area of a duplex Fe/2Si/0.1C steel described elsewhere(4). The microstructure consists of internally twinned martensite (M) embedded in a ferrite matrix (F). Use of the 2-beam tilted illumination technique incorporating a twin reflection produced {110} fringes across the microtwins.


Author(s):  
L. S. Lin ◽  
K. P. Gumz ◽  
A. V. Karg ◽  
C. C. Law

Carbon and temperature effects on carbide formation in the carburized zone of M50NiL are of great importance because they can be used to control surface properties of bearings. A series of homogeneous alloys (with M50NiL as base composition) containing various levels of carbon in the range of 0.15% to 1.5% (in wt.%) and heat treated at temperatures between 650°C to 1100°C were selected for characterizations. Eleven samples were chosen for carbide characterization and chemical analysis and their identifications are listed in Table 1.Five different carbides consisting of M6C, M2C, M7C3 and M23C6 were found in all eleven samples examined as shown in Table 1. M6C carbides (with least carbon) were found to be the major carbide in low carbon alloys (<0.3% C) and their amounts decreased as the carbon content increased. In sample C (0.3% C), most particles (95%) encountered were M6C carbide with a particle sizes range between 0.05 to 0.25 um. The M6C carbide are enriched in both Mo and Fe and have a fee structure with lattice parameter a=1.105 nm (Figure 1).


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