Abstract
Compressed Stabilized Earth Brick (CSEB) is a sustainable material utilizing locally available soils mixed with stabilizers to increase its strength. Two main factors affecting the strength of prototype are its compressive strength and water absorption rate. In this study, the mix proportion ratio for producing CSEB prototypes from laterite soil and clay types was 1:10 (cement:soil). Three different compactions (i.e. 2000, 3000, and 4000 Psi) were applied to produce prototypes with dimension of 100×50×40 mm. The samples were tested at the ages of 7 and 28 days. For laterite soil CSEB, the optimum strength was achieved by the sample subjected to 2000 Psi compaction,withits compressive strength of 9.0 N/mm2 and water absorption rate of 14.9%. For clay CSEBthe optimum strength observed was the sample subjected to 4000 Psicompaction, with the compressive strength of 5.8 N/mm2 and water absorption rate of 17%. However, the compressive strength of clay CSEB is still below the level specified in the MS 76:1972, which is over 7 N/mm2 for the load-bearing fired brick Class (1). This study also revealed that the increased in compression pressure would result in different strength performances for both CSEBs made from laterite soil and clay.
Highlights
Until recently, more than half of the world's population have chosen to build their homes of this soil-based structures due to its high durability, low cost, good resistant to fire and weather factors, and aesthetically attractive [1,2,3,4,5].Compressed Stabilized Earth Brick (CSEB) is agreen technology in building construction, which has been explored using locally available materials
The CSEB prototype samples produced with different compactions were physically tested through compressive stress test at the age of 7 and 28 days
As the prototype samples were subjected to compactions of 3000 Psi and 4000 Psi, their compressive strength at 28 days still achieved the predetermined level of strength as stated in MS 76:1972, load-bearing fired brick Class (1), which is at least 7 N/mm2 [19]
Summary
More than half of the world's population have chosen to build their homes of this soil-based structures due to its high durability, low cost, good resistant to fire and weather factors, and aesthetically attractive [1,2,3,4,5]. Compressed Stabilized Earth Brick (CSEB) is agreen technology in building construction, which has been explored using locally available materials. Soil-based home construction has begun since 1950s in Bogota, Colombia, initially introduced by Raul Ramirez [6]. From using manually controlled pressure in a steel mould in early 1950s, the process of producing CSEBs has undergone many changes. Hydraulic compression machine has been widely used to improve the quality and to optimize the cost, effort and time in producing CSEBs [9]
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