Use of Compressed Earth Bricks/Blocks in Load-Bearing Masonry Structural Systems: A Review

Abstract:

Clay fired bricks are commonly encountered in the construction sector as infill between structural frames. This system has been favoured by builders due to familiarity, ease of manufacture, and they also do not require skilled labourers to erect. Produced from moulded clay and hardened by firing in a kiln, brick production is both energy intensive and high in CO₂ emission. Fired bricks are typically held together by cement mortar at the bed and perpend joints which provide very minimal resistance against shearing or flexure. This meant brick walls often require additional wind posts or stiffeners to provide stability. Compressed earth masonry offers an alternative to the conventional brick walling system in that, besides having the advantages of conventional bricks, they also confer higher compressive strengths due to the high-pressure compaction manufacturing process. The high strength allows the system to be adapted into load-bearing masonry system for use in low-rise buildings as an alternative to the more expensive reinforced concrete or steel framing system. The high-pressure compaction process along with high quality moulds also give fair-faced finished to the bricks, allowing them to be used as facing bricks and eliminating the need for surface finishing such as plastering. Additionally, compressed bricks featuring interlocking key holes along the bed joints allows for simplified and faster wall erection process. This review paper aims to document the research progress thus far in adopting the compressed interlocking bricks as a sustainable alternative to current building materials.

• Periodical: Materials Science Forum (Volume 997)
• Pages: 9-19
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.997.9
• Online since: June 2020
• Authors: Lim Chung Han*, Abdul Karim Bin Mirasa, Ismail Saad, Nurmin Bolong, Nurul Shahadahtul Afizah Bt. Asman, Hidayati Bte Asrah, Eddy Syaizul Rizam Bin Abdullah
• Keywords: Adobe Masonry, Blocks, Bricks, Compressed Earth

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