EarthUprising Adobe Block and Machine Co.

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Block Production

The materials used to produce the blocks can be from a variety of sources and types. Native soil in many areas is suitable for block making after being processed through a 1/2" screen. Sand and gravel quarries often produce waste from the crushing, screening or washing processes that are suitable and sometimes perfect for compressed earth block. These materials are usually considered byproducts or nuisance materials which the quarries are happy to get rid of at any price.

The cement is the single component dependent on an existing infrastructure and the price of which is subject to world market prices. Cement is not required to produce strong blocks but is needed to make the blocks water resistant. In construction situations where the blocks can be protected from the effects of rain or flooding before, during and after construction, cement is not mandatory. The amount of cement needed to stabilize the blocks is also dependent on the climate of the region where the blocks are being used. In warm desert climates 4 - 5% is plenty of cement and blocks stabilized at this rate will meet or exceed uniform building codes where established. In wet, tropical or cold climates, 8% Portland is needed to insure against excessive wear when continuously exposed to the elements. In wet, freezing climates the block constructions should be protected with an overhanging roof or stucco coating to guard against the effects of freezing moisture inside the block which will cause spalling of the block surface.

Block cost example:

To produce 2000 - 8" x 4" x 16" blocks with two - 3" holes for vertical reinforcing.

Requires -

26 cubic yards of dirt mined on site using a backhoe and 1/2" grizzly (gravity operated screen). $1.00 per yard including labor, fuel and maintenance. - $26.00

52 - 94 lb bags of Portland cement to stabilize to 8%. $8.00 per bag = $416.00 (can be stabilized to 4% in many climate zones)

12 gals of diesel fuel for block machine (1/2 gal per hour) and skid-steer (1 gal per hour) $48.00

1 equipment operator and 2 men for stacking blocks. Labor cost are variable depending on local employment conditions. In Honduras $50.00 per 8 hour day

Total cost: $540.00 = 27 cents per block

Our experience in the field producing blocks for contractors and projects throughout the Southwestern U.S. has given us a wealth of practical experience in selecting soils in many different geologic regions. We offer and encourage machine buyers to take advantage of this experience to help facilitate soil selection in the area where the machine will be used. This can save a lot of trial and error which can be both expensive and give a bad first impression to those interested in buying the blocks for construction. At the same time we will train the machine owner and personnel in machine operation and maintenance.

For more information please don't hesitate to contact us now.