Relationship on index of physics and mechanics cement-stabilized aggregates between vibrating and static compacting methods

In order to compare physical and mechanical performance of the cement stable macadam roadbase material between vibration and compaction (static) forming methods, and clarifing reasons of strength difference. Vibration molding was applied for cement stable macadam in test, after curing the physical and mechanical indexes were measure, and comparied with that of the standard compaction (static compaction) specimens. Experiment results show that the relationship of optimum water content and maximum dry density between the vibration molding and standard compaction is inear, the maximum dry density of vibration molding increases 0.04 g/cm³ compare of that of standard compaction, increasing range at around 1.8%. The vibration molding specimens compressive strength increased by 70% than that static compaction molding overall, 60% increasing strength comes from skeleton embedded role. Based on the strength equivalent principle, the contant of cement can be saved 2% to 3% in cement stable macadam. According to the regression curves of different gradation, the slope of the curve present characterization of adaption for compaction methold, intercept represents the distribution in the aspects of quality in strength. Reseach indicate that for inorganic stabilized aggregate materials, vibration molding's advantage is not only to improve dry density, but to enhance materials gradation structural effect fully.