Earthbag Testing
An Amazing Experiment: If anyone had any doubts about the strength and integrity of this system of building, this experiment should allay those concerns. Earthbag building of this sort can be STRONG! 
Earth Architecture and Ceramics: The Sandbag/Superadobe/ Superblock Construction System by Nader Khalili (Cal-Earth Institute) and Phill Vittore (Structural Engineering Consultant),1998. An article outlining the chronology and results of testing done on Nader Khalili's superadobe system of building. 
Earthbag Housing: Structural Behavior and Applicability in Developing Countries by Bryce Daigle. This thesis explores the structural behaviour of earthbag housing under vertical compressive loading, in an attempt to broaden our quantitative understanding of this alternative building technique. Furthermore, this technique is assessed, along with other alternative construction techniques, for suitability in southern Sri Lanka, an area heavily damaged by the 2004 Indian Ocean tsunami.
Prism Testing of Polypropylene Earthbags A prism test was conducted on earthbags using three different types of fill: sand, rubble, and dirt. The tests gave us the failure stress of the bags with the different types of fill (43.06 psi, 57.84 psi, and 311 psi respectively), as well as providing deflection data on the earthbags. These tests were conducted at the West Point Military Academy Engineering Department.