Abstract

Abstract Experiments were conducted to assess simpler alternatives for estimating the Atterberg (liquid and plastic) limits as needed during military field reconnaissance and combat engineering exercises. Eight non-ASTM test methods were compared to the Casagrande cup liquid limit method and ten non-ASTM alternatives were compared to the rolled-bead plastic limit method for three cohesive soils having wide plasticity index ranges. Only one non-ASTM method yielded results within 10 % of the ASTM liquid and plastic limit values. This unique test method was created from a unified (dual-weight) fall cone apparatus and procedure to enable simple assessment of soil consistency limits.

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