CEB Press Performance Data Collection
Contents
Compressive Strength
Compressive Strength Results - data collection from 2010 - [1]
Block Uniformity
Data taken 4/2014 -
Block uniformity data - measurement of dimensions of bricks produced with CEB Version 6. Method: examining height of 4 corners of block to test how uniform each block is in terms of height over the brick corners.
DATA
1500 psi
- 2.96 back left
- 2.90 back right
- 2.86 front right
- 2.82 front lest
- 1/7th inch
Brick 3
- 2300 psi
- Front left - 3.55
- Front right - 3.6
- Rear left - 3.55
- Rear right - 3.64
- 1/9" difference
Brick 4
- Fl - 4.04
- Fr - 4.08
- RL - 4.11
- R&R -4.18
After 5 shims for 1/9
- Fl - 3.83
- Fr - 3.76
- Rl -3.87
- Rr- 3.77
B6
- Rl 4.23
- Rr 4.18
- Fl 4.19
- Fr 4.17
B7
- Fl 2.16
- Fr 2.16
- Rl 2.22
- Rr 2.19
B8
- Fl - 3.94
- Fr - 3.90
- Rl - 3.95
- Rr - 3.87
B9
- Fl 3.60
- Fl 3.62
- Rl 3.58
- Rr 3.65
B10
- Fl 3.77
- Fr 3.82
- Rl 3.76
- Rr 3.81
B11
- Fl 2-5/8
- Fr 2-5/8
- Rl 2-5/8
- Rr 2-11/16
Fuel Consumption
- One tank of gas, 1 gallon - lasts 1 hour on the 27 hp Power Cube, with 300 blocks produced in one hour (6 blocks per minute).
- Fuel cost - 1 cent per block assuming $3/gallon gas.
Brick Production Cost
Mechanized
- 1 cent per block for CEB press, 1 power cube - $3/hour
- 2 cents per block for tractor fuel, 2 power cubes - $6/hour
- Labor - $15/hour for tractor operator, $10/hour for brick stacker.
Total - $34 for 300 blocks - 11 cents per block
Total Labor per block - 8 cents per block
Total fuel per block assuming tractor loading - 3 cents per block
Manual Production Cost
- Total labor assuming manual digging - would require 8 people at $10/hour - $80/hr
- Total labor - 1 person stacks block on pallets - $10/hr
- $3/hour for fuel to run brick press
Total cost of producing block if using a large work crew without tractor - 31 cents/block
Conclusion: Usage of tractor loader reduces the cost of brick production by a factor of 4 compared to loading the machine manually
