Research Article
Thermophysical and Mechanical Characterization of the Earth-Straw Materials Employed in the Building of Shell Houses in the Mourla Region of Cameroon's Far North
Bernard Kola
,
Colbert Babé*,
Noël Djongyang
Issue:
Volume 13, Issue 3, September 2024
Pages:
43-57
Received:
9 August 2024
Accepted:
5 September 2024
Published:
26 September 2024
Abstract: Using modern materials such as cement in construction leads to high energy consumption due to increased heat transfer, resulting in warmer indoor environments. In the hot climate of the Sudano-Sahelian zone in northern Cameroon, it is crucial to use materials that provide thermal comfort and reduce the need for air conditioning. Certain locally sourced materials support environmental preservation and facilitate the construction of houses for artisans. This research focuses on developing and characterizing bio-based products using raw earth. The study investigated the mechanical performance in compression, thermal conductivity, and other material properties. Different proportions of plant aggregates, ranging from 0% to 15% of the soil mass, were incorporated for the experimental study. The results indicate that the compressive strength values are 6.3, 8.5, 6.1, and 5.6 MPa for 0%, 5%, 10%, and 15% reinforcement, respectively, revealing a 35% increase in compressive strength with the addition of 5%. Furthermore, the study showed a 45% decrease in thermal conductivity compared to samples without reinforcement. These findings demonstrate that this eco-friendly material has the potential to promote the efficient use of local resources in the construction sector. It not only enhances thermal comfort and reduces energy consumption associated with air conditioning but also supports the construction of more sustainable buildings, leading to a cleaner environment.
Abstract: Using modern materials such as cement in construction leads to high energy consumption due to increased heat transfer, resulting in warmer indoor environments. In the hot climate of the Sudano-Sahelian zone in northern Cameroon, it is crucial to use materials that provide thermal comfort and reduce the need for air conditioning. Certain locally sou...
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Research Article
Passive House Design: A Possible Energy Efficient Option in the Building Sector of Nepal
Sangam Bhandari*,
Shubha Laxmi Shrestha,
Bivek Baral
Issue:
Volume 13, Issue 3, September 2024
Pages:
58-66
Received:
4 April 2024
Accepted:
7 August 2024
Published:
29 October 2024
Abstract: The diversified geography of Nepal creates huge variations in the country's climatic zones; however, the building industry has so far used standardized methods that tend to neglect local climate conditions. Most of these standards then rely on energy-intensive mechanical systems to maintain indoor thermal comfort, without considering more viable and climate-responsive design methods. In this light, the development of a climate classification related to building design will help develop and encourage energy- and climate-effective building architecture in Nepal. The existing energy-saving practice in the building sector of the country is reviewed in this paper, and it outlines ways to improve the adaptation of energy-efficient methodology. It shows that passive houses are performing much better in comparison with modern constructions that are behind in terms of energy efficiency when compared with traditional homes. The study outlines the climate-specific design criteria and methodologies for various regions and sets the path for exploration of the passive house design process challenges and opportunities that might exist for wider diffusion. Also discussed are strategies to overcome the barriers and promote passive house construction, offering a pathway toward sustainable building practices in Nepal.
Abstract: The diversified geography of Nepal creates huge variations in the country's climatic zones; however, the building industry has so far used standardized methods that tend to neglect local climate conditions. Most of these standards then rely on energy-intensive mechanical systems to maintain indoor thermal comfort, without considering more viable an...
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