The AECT Impact 2001A Compressed Earth Block Machine is an automated machine that produces about 2,400 blocks per 8 hour day, powered by a 7 HP diesel engine.
Distributors / Implementing Organizations
AECT with dealers in South Africa, Egypt, Saudi Arabia, and other nations
AECT individually produces products as they are ordered.
Intellectural Property Type
User Provision Model
The machines are distributed mainly through aid organizations or through dealers in South Africa, Egypt, Saudi Arabia, and other African countries. Interview with representative
Distributions to Date Status
71 units Interview with representative
206 x 173 x 130 cm3
Raw materials used
Earth, clay, sand and cement
Recommended water content (ratio)
Induced pressure (Mpa)
7.0 HP Yanmar diesel engine
Finished unit dimensions
30.5 x 15.0 x 5.0 – 11.5cm3
Rate of production (units/hour)
Curation duration (days)
No earth block curing required
Not suitable for cold climates unless necessary vapour barriers and insulation can be added. On their own ISSBs and CEBs do not hold up well to freeze/thaw cycles and have a low thermal insulation capacity
The AECT Impact 2001A Compressed Earth Block Machine is a mobile unit, powered by a 7 HP 208cc OHV Power Horse Gasoline Engine (Yanmar) with 19.5 gallon capacity. Design specifications include: • Unit Dimensions (L x W x H): 206 x 172.72 x 130 cm3, 15 cm road clearance. • Weight: 743.89 kg • Finished brick size (L x W x H): 30.5 x 15.0 x 5.0 - 11.5 cm3 • Finished brick weight: 4.1 - 8.1 kg
AECT requires 2 days of training in order to use the product. Failure to complete the training will result in a failure to validate the product warranty.
According to the manufacturer, almost every part is replaceable. Interview with representative
AECT has products manufactured in 1985 that are still in use. AECT representative states that if they are treated well, there is no reason for them to stop working. Most of the parts are replaceable, and the replaceable liners in the product prevent dirt from metal corrosion, the main reason for product deterioration. Since each user is required to be trained for the product, there is a 6-month warranty. No disposal information is available. Interview with representative
Manufacturer Specified Performance Parameters
Block production rate: Approximately 300 blocks per hour or 2400 per 8 hour day. • Hopper capacity: 8 - 9 blocks • Hydraulic system: 73.82 L capacity Best Quality of block: • Uniformity • Strength • Easy to Lay • No variance in length and width • Some moulds have adjustable thickness
Vetted Performance Status
AECT requires 2 days of training in order to use the product effectively and safely. Failure to complete the training will result in a failure to validate the product warranty.
Complementary Technical Systems
Academic Research and References
Graham, C.W. et.al., 2005, Movement Coefficients of Compressed Earth Masonry Units, 10th Canadian Masonry Symposium, Banff, Alberta, June 1 – 12, 2005.
Morony, J. J., 2005, Logged Data For Heat Wave- A Preliminary Report, Del Rio, Texas, May 31 – June 2, 2005.
Graham, C. W. et.al., 2005, Soil Block Home Construction, BTEC Sustainable Buildings III Conference, Santa Fe, New Mexico, October 17-18, 2005.
Compliance with regulations