A knowledge of the variation in fundamental engineering properties of the various construction materials is essential for a comprehensive evaluation of the performance of various road sections. Support is provided for the louisiana experimental base project, an in-service experimental road project constructed to aid in an evaluation of design performance characteristics of a number of experimental test sections. The expected variation in the static and resilient (fatigue) properties of the materials that make up the layers of the pavement structure can provide an inherent variation data base from which continuing evaluation and analysis of pavement behavior and performance of these layers can be undertaken. Results are presented of material characterization and inherent analysis of a resilient (fatigue) test program undertaken to establish the magnitude, scope, and expected variation in fundamental engineering properties of laboratory-prepared specimens and field cores of the cement-stabilized materials used in the base and subbase layers of some of the test sectionsof the base project. Variation analyses were completed for such fundamental properties as modulus, poisson's ratio, tensile stress, tensile strain, and fatigue cycles to failure. Regression analysis techniques were also used to quantify those factors that significantly affect the fatigue life of the various construction materials used inthe base project. This information, when combined with the in-service performance results from the base project, should produce a better knowledge of the important mix variables affecting the fundamentalengineering performance properties, which should result in changes and improvements in quality control measures. This paper appears in transportation research record no. 1295, Soil stabilization 1991 .
Samenvatting