EVALUATION OF FLY ASH AND LIME-FLY ASH TEST SITES USING A SIMPLIFIED ELASTIC THEORY MODEL AND DYNAFLECT MEASUREMENTS.

Presented in this paper is an efficient method for computing the elastic moduli of four types of lime-fly ash stabilized pavement structures from Dynaflect-measured field deflections with reasonable accuracy. This approach is based on a new deflection equation derived from a simplified elastic theory model, and allows analysis of multilayered pavements that utilize simple mathematical computations that permit calculations at a fraction of the cost of multilayered elastic and finite-element models. With this method, a large number of readings can be economically analyzed. The structural model, in the form of a computer program, has unique features and was applied to field measurements of 43 experimental test sections located at 7 sites on Texas highways. These test sections were constructed on low plasticity index (PI) clayey soil and very low PI coarse sandy soil.

EVALUATION OF FLY ASH AND LIME-FLY ASH TEST SITES USING A SIMPLIFIED ELASTIC THEORY MODEL AND DYNAFLECT MEASUREMENTS. Academic Article