Review Article

A Systematic Review on the Performance Characteristics of Sustainable, Unfired Admixed Soil Blocks for Agricultural and Industrial Waste Management

Table 3

Various manufacturing techniques used.

Ref.Methods/techniquesType of block/test specimens

[8]CIN VA-Ram hand press under a certain amount of pressure (about 1.0 MN/m2).Hollow block
[9]Hydraulic compressing machine.Interlocking blocks
[10]Hand-operated compression machine.Solid block
[11]The clay is mixed and crushed with sand and then mixed with 10–15% water. The fresh mixture is extruded to form a long cable of material that is cut into bricks of the desired length.Solid block
[12]TERSTARAM appro-techno. This machine produces two CEBs at each pressing and has a system to adjust the height and volume of the mold with steel plates.Solid and smooth blocks
[5]No machine was described for mixing.Cylindrical samples
[13]Motorized hydraulic press where it was compacted by a 24-ton load.Solid block
[14]Compacting the mixture at the optimum moisture content in a human-powered mechanical press.Solid block
[15]Automatic mixer, self-fitting, soil-cement blocks were fabricated by press-molding.Hollow block
[16]CSM mixer, the model V2 Vimaq manual 15-ton press.Hollow block
[17]Hydraulic press of 250 tons compression ratio according to NBR 10836 and NBR 10835.Hollow block
[18]Manual press with the following characteristics; Lever’s arm: 1800 mm, internal dimension of the mold: 300 mm × 150 mm × 100 m, applied force: 1 kN, compression mode: static.Hollow block
[19]Molding (compaction) pressure was controlled by a digital compression testing machine, having a capacity of 1000 kN and least count of 100 N. Experiments were carried out for a molding pressure of 1.25–7.5 MPa at 1.25 MPa intervals.Cylindrical samples
[20]Hydraulic compressing machine.Hollow block
[6]The blocks were made with a pressure gauge hydraulic block-making machine with a constant pressure of 100 bars.Solid block
[21]BREPAC block-making machine with a constant pressure of 10 MPa.Solid block
[22]The machine is not described in the article. The blocks were cast by controlling the dry density of the blocks.Solid block
[23]CINVA-Ram press machine and manually pressed to produce the blocks.Solid block
[24]Compacting the mixture at the optimum moisture content in a human-powered mechanical press.Solid block
[25]Compaction of the wet mix was done in a heavy-duty steel mold using a test mark CM-500 series compression machine with a maximum compression capacity of 2224 kN.Solid block
[26]Manual compaction press (VIMAQ V2).Solid block
[27]Same as unconfined compression cylinders for testing soil specimens, the difference being that the sample was cast in the mold prepared for blocks.Solid block
[28]The hydraulic model with a capacity of 20 ton.Solid block
[29]40 times of hand tapping were performed for each layer with a steel rod. Then, the mold cover was locked, and forming pressure of 10 MPa was applied.Not mentioned
[30]A manual press manufactured by the Habitec Center at the Asian Institute of Technology, Thailand.Hollow block
[31]Tinius Olsen H50KS machine compressed at 10 MPa pressure.Cylindrical and cubical samples
[32]Samples were prepared by using a hydraulic press.Cubic sample
[33]CINVA-Ram press machine.Solid block
[34]Followed ABNT NBR 10833 and used hydraulic press.Hollow block
[35]Blocks were hand pressed at the optimum moisture content.Solid block
[36]Hydraulic press, under 15 tons of pressure.Hollow block
[37]Manual press using a mechanical molder.Solid block
[38]No machine was described for mixing.Cubic sample
[7]Hydraulic press and the compaction pressure were controlled and maintained.Hollow block
[39]Hydraulic press with compaction at 1.37 × 109 N/m2.Hollow block
[40]Mix was loaded in the brick press for pressing blocks and molded into standard dimensions.Not mentioned