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Difference between revisions of "Superadobe"

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*Water: creates a paste
 
*Water: creates a paste
 
Pine Needle can also be added, but the use of cement has proven to be very effective in providing structual integrity.
 
Pine Needle can also be added, but the use of cement has proven to be very effective in providing structual integrity.
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'''Materials'''
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<gallery>
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File:Costales material.jpg| these sacks full of dirt found on site were the source of earth for our superadobe
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</gallery>
  
 
'''Process '''
 
'''Process '''
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<gallery>
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File:Sifting.jpg| It is recommended that you sift the sand prior to mixing it with the materials. Sifting the sand will eliminate large rocks from your Superadobe and ensure that the resulting paste is smooth and easily applied.
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File:Superadobe sanddirt sm.jpg|
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</gallery>
  
 
Construction with Superadobe is a relatively simple process. Generally, the required values of materials gives a ratio of  
 
Construction with Superadobe is a relatively simple process. Generally, the required values of materials gives a ratio of  
 
1 earth : 1 sand : 1/5 cement.
 
1 earth : 1 sand : 1/5 cement.
 
In our construction, we used
 
In our construction, we used
It is recomended that you sift the sand prior to mixing it with the materials. Sifting the sand will eliminate large rocks from your Superadobe and ensure that the resulting paste is smooth and easily applied.
 
  
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assume 1 costal=60L and 1 bucket=19L
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3 buckets of dirt/costal x 10 costales= 30 buckets of dirt (~570L)
 +
3 buckets of sand/wheelbarrow x 1 wheelbarrow = 3 buckets of sand (~57L)
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1/3 a bag of cement = ~ 20L
  
  

Revision as of 20:11, 4 August 2010

Superadobe is a form of adobe (earthen) construction that uses long snake-like sand bags and barbed wire in buildings with arches and domes, for strong and attractive results. The process was innovated by an Iranian-born architect - activist named Nader Khalili in 1984 in a project sponsored by NASA in pursuit of durable building material for sustainable habitations on the Moon and Mars. The design for Khalili´s superadobe structures met its application in the early 1990s, when large groups of Iraqis found themselves homeless as a result of the Persian Gulf War. Nader Khalili then partnered with the United Nations in order to disseminate his design as a means of emergency refugee shelters. Superadobe construction is a development based on the principles of traditional adobe construction with a few adjustments made to further stabilize the system. Whereas some traditional adobe construction boasts structures standing for over 500 years, traditional adobe is vulnerable to damage by earthquakes. Superadobe, on the other hand, is intended to be earthquake-resistant.[1] Another benefit of Superadobe construction - which can be said of many natural building techniques - is that renovation is simply a matter of mixing more Superadobe and applying it to the existing structure. Maintence is therefore easily achieved as structures can be continually improved upon.

The components of traditional adobe construction

Traditional adobe construction uses the following materials to form bricks.

  • Earth : preferably with a high clay content, this provides structure
  • Sand : provides resistance
  • Horse Manure : acts as a binder
  • Pine Needle or other natural fiber: gives lateral integrity
  • Water: creates a paste

The components of Superadobe

Superadobe construction uses the following materials to form a paste which is applied to dome like structures constructed of sandbags.

  • Earth: preferably with a high clay content, this provides structure
  • Sand: provides resistance
  • Cement: acts a binder and a stabilizer: provides earthquake resistance[2]
  • Water: creates a paste

Pine Needle can also be added, but the use of cement has proven to be very effective in providing structual integrity.

Materials

Process

Construction with Superadobe is a relatively simple process. Generally, the required values of materials gives a ratio of 1 earth : 1 sand : 1/5 cement. In our construction, we used

assume 1 costal=60L and 1 bucket=19L 3 buckets of dirt/costal x 10 costales= 30 buckets of dirt (~570L) 3 buckets of sand/wheelbarrow x 1 wheelbarrow = 3 buckets of sand (~57L) 1/3 a bag of cement = ~ 20L




Notes

  1. "they have passed seismic testing required under California's strict earthquake-zone building codes." - - Calearth News Article - Sandbag homes may be shelter breakthrough, Anton Ferreira, 30 Jul 2001.
  2. "Concrete is resistant to earthquakes." http://www.concretethinker.com/Papers.aspx?DocId=329

Interwiki links

External links