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- Cast_earth abstract "Cast Earth is a proprietary modified building material developed since the mid-1990s by Harris Lowenhaupt and Michael Frerking. Based on the earlier Turkish Alker which is a concrete-like composite with soil of a suitable composition as its bulk component stabilized with about 15% calcined gypsum (plaster of Paris) instead of Portland cement. It can be used to form solid walls that need not be reinforced with a steel frame or timber framing, unless extra seismic reinforcement is necessary. Forms are set up and filled with Cast Earth, which sets quickly and solidly. Once the forms are removed the wall stays sound. The calcined gypsum sets quickly, which is one quality that has historically made plaster of Paris so useful. When calcined gypsum is added to soil, however, the setting time is reduced even further, to mere minutes. Often this quick setting is too fast and a retardant must be added to the mix so it can be poured. In Alker, lime is added to extend working time to 20 minutes. Cast Earth uses another retardant for an even greater working time. When the structure is dry, it is similar to adobe in various ways, outperforming it in tensile strength, hardness, and erosion resistance. It also has less tendency to crack and shrink. Cast Earth walls do soak up water, however, if they are not sealed with a silicone coating or other waterproofer.Using Cast Earth in place of other materials reduces the time and labor needed to complete a project. Machinery is used in place of much of the human labor during Cast Earth construction. It is often less costly, since earth and calcined gypsum are plentiful and cheap materials to acquire.Few contractors are licensed in the use of Cast Earth today, but if public demand for structures made of the material grows, more builders will seek training in its use.Template:Where?".
- Cast_earth wikiPageExternalLink yemenbildiri01.html.
- Cast_earth wikiPageExternalLink www.castearth.com.
- Cast_earth wikiPageID "3251022".
- Cast_earth wikiPageRevisionID "604244447".
- Cast_earth hasPhotoCollection Cast_earth.
- Cast_earth subject Category:Building_materials.
- Cast_earth subject Category:Construction.
- Cast_earth subject Category:Masonry.
- Cast_earth type Artifact100021939.
- Cast_earth type BuildingMaterial114786479.
- Cast_earth type BuildingMaterials.
- Cast_earth type Object100002684.
- Cast_earth type PhysicalEntity100001930.
- Cast_earth type Whole100003553.
- Cast_earth comment "Cast Earth is a proprietary modified building material developed since the mid-1990s by Harris Lowenhaupt and Michael Frerking. Based on the earlier Turkish Alker which is a concrete-like composite with soil of a suitable composition as its bulk component stabilized with about 15% calcined gypsum (plaster of Paris) instead of Portland cement. It can be used to form solid walls that need not be reinforced with a steel frame or timber framing, unless extra seismic reinforcement is necessary.".
- Cast_earth label "Cast earth".
- Cast_earth sameAs m.0918y3.
- Cast_earth sameAs Q5049549.
- Cast_earth sameAs Q5049549.
- Cast_earth sameAs Cast_earth.
- Cast_earth wasDerivedFrom Cast_earth?oldid=604244447.
- Cast_earth isPrimaryTopicOf Cast_earth.