SUMMARY
Earth architecture is known for centuries, however, is rarely used today compared to common construction systems. Compressed earth blocks (BTC) are structural elements with a high potential to be used in housing construction in Mexico, mainly by its similarity to traditional blocks, being suitable to improve its characteristics with a stabilizer. This paper was performed with BTC stabilized with cement and a substance from cactus stalk. It was found that adding cactus mucilage a significant increase in wet and dry compressive strength, which seems to be related to a decrease in porosity; some mucilage effect hypothesis in the solid analyzed are shownin this paper