Mud adobe building
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All about Burnt Adobe homes in Tucson. Although the material itself is naturally unstable, an adobe wall can be load bearing, self-sustaining, and naturally energy efficient. Adobe walls are often thick, forming a natural insulation from the environmental heat that creates and sustains the material.
Today's commercial adobe is sometimes kiln-dried, although purists may call these "clay bricks. If the brick is mechanically compressed, the adobe mixture needs less moisture and the bricks can be used almost immediately, although purists may call these "compressed earth bricks.
In the United States, the word a dobe is said with the accent on the second syllable and the last letter pronounced, as in "ah-DOE-bee. It is a Spanish word that does not originate in Spain. Meaning "the brick," the phrase at-tuba comes from Arabic and Egyptian languages. As Muslims migrated across northern Africa and into the Iberian Peninsula, the phrase was transformed into a Spanish word after the eighth century CE.
The word entered our English language through the colonization of America by Spain after the 15th century. The word is widely used in the southwestern United States and Spanish speaking countries. Like the building material itself, the word is ancient, going back to the creation of language—derivations of the word have been seen in ancient hieroglyphics.
Compressed Earth Blocks CEBs resemble adobe, except they usually do not contain straw or asphalt, and they generally are more uniform in size and shape. When adobe is NOT formed into bricks, it's called puddled adobe, and is used like the mud material in cob houses.
The material is mixed and then thrown in lumps to gradually create an earthen wall, where the mixture dries in place. In the Natural Building Blog , Dr. Owen Geiger, Director of the Geiger Research Institute of Sustainable Building , contends that Indigenous groups in America used puddled adobe before the Spanish introduced adobe brick-making methods.
Adobe is resilient if well-maintained. One of the oldest known structures in the U. Preservationists at the National Park Service of the U. Department of the Interior provide guidance on historic preservation, and their Preservation of Historic Adobe Buildings Preservation Brief 5 published in August has been the gold standard for keeping this building material maintained. Constant monitoring of deterioration sources, including the breakdown of mechanical systems like leaky plumbing, is the most important part of maintaining an adobe structure.
Problems usually have more than one source, but the most common are 1 poor building, design, and engineering techniques; 2 too much rainwater, ground water, or watering of surrounding vegetation; 3 wind erosion from windblown sand; 4 plants taking root or birds and insects living within the adobe walls; and 5 previous repairs with incompatible building materials.
To maintain historic and traditional adobe, its best to know traditional methods of construction so that repairs can be compatible. For example, true adobe bricks must be assembled with a mud mortar of properties similar to the adobe. You can't use cement mortar because it's too hard — that is, the mortars cannot be stronger than the adobe brick, according to preservationists. Foundations are often constructed of masonry red brick or stone. We provide all matching mortar for your project.
Sizes Use Portland Stabilized 4x4x16 Veneer. Pressed adobe bricks are enhanced by utilizing hydraulic presses and machine automation. Soil is mixed with water and if desired a stabilizing agent like Portland cement to create a damp mix. The mixture is then set in the brick machine's form, where the force of a hydraulic press, presses and compacts the soil into the desired shape and size.
The bricks emerge almost completely dry and ready for building. Pressed adobes provide significant increases in strength, both in compression and modulus of rupture. Pressed adobes also provide for quicker and more efficient installation because of their uniformity of size and shape. The walls are then built using standard masonry techniques. Exterior walls can be rendered and extra insulation added for additional comfort. Many people who have mud brick houses have built them by hand, but if you're serious about a mud brick house you may want to consider consulting a specialist to ensure that you're completely aware of what's involved.
Air-dried mud bricks have a lifespan of approximately 30 years before they crumble and need to be replaced. This can be extended if your exterior walls are rendered and your house has a solid roof with deep eaves, though. Entire cities have survived hundreds of years by continuously repairing decomposing mud brick walls.
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