Automated Generation of Family of Compaction Curves (05-1223)
Radha Krishna Daita, H.C. Nutting Company
Vincent Drnevich, Purdue University
Daehyeon Kim, Chosun University, South Korea

Compaction control of highway embankments and pavement subgrades is usually achieved by performing a One-Point test using a Family of Curves in accordance with AASHTO T 272. This method involves interpolations within a Family of Curves and manual calculations. This paper introduces a Microsoft Excel program, FAMCURVES, which generates a Family of Curves and also interpolates for a One-Point Test to determine the optimum moisture content and maximum dry unit weight associated with this point. FAMCURVES makes it easy to generate a site-specific family of curves thus allowing the One-Point Test to provide more accurate results. The paper provides a discussion of the mathematical modeling used to generate compaction curves, application of the model in an innovative way, and a description of FAMCURVES. FAMCURVES is used to generate the Family of Curves used by the Indiana Department of Transportation to establish an interpolated curve for a given One Point Test data. FAMCURVES also is used to study the effects of compaction energy on a given soil and to determine site- specific family of curves. FAMCURVES was developed to study the effects of type and amount of chemical stabilizers on soil compaction behavior. The coefficients determined by FAMCURVES for the mathematical model allow for the systematic study of the change in compaction behavior. The paper presents some preliminary data on how compaction curves are affected by the addition of varying amounts of lime kiln dust stabilizers from two different sources.