ETHOS Technical Reports

Document Type

Report

Publication Date

6-30-2003

Abstract

The Monoliticas stoves have a body composed of a blend of insulative materials and concrete. Four were constructed in Honduras. The first was much too heavy for any practical application. Too much concrete, sand and water was used in the mix. The concrete mix is not intended to be similar to a concrete mix used for construction of roads or structures. The mix is intended to be very dry and porous. A further reason the stove was too heavy was the lack of the light volcanic pumice. This pumice that is readily available in Nicaragua is not to be found in Tegucigalpa. For the first stove, as substitute for the large and small pumice rock in the body, large and small gravel was used. This gravel was much denser, which decreased the insulation and added weight. The second stove was made of a material supposed to be vermiculite as a substitute for the large pumice. This stove was lighter than the first stove but probably still too heavy for any practical use. And efficiency test was run on this stove to see if indeed the vermiculite is a worthy substitute. Results are pending. Hopefully one more efficiency test will be run on this stove.


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