Abstract
A series of unconfined and tri-axial compression tests were preformed to evaluate confirm strength characteristics and failure behavior of foamed cement lightweight soil with much air. The followings were obtained from the present study; 1) Unconfined strength was evaluated by two parameters, i. e., air content and water cement ratio; 2) Failure patterns were classified as following three based on the tri-axial compression tests; shear, compression, and shear and compression failures. Thus, strength should be evaluated in each failure pattern. The shear and compression strength were evaluated, including the characteristics of strength decrease with the increase of effective confining stress.
