PURPOSES : In Korea, most designs of pavement had been mainly performed by considering CBR of granular materials before KPRP(Korea Pavement Research Program) and 86 AASHTO design method were introduced. Since then, the trend of the pavement designs gradually have moved to using mechanical characteristics throughout the resilient modulus based on the test results up to recently. In this study, we should like to research the mechanical characteristics of paving materials containing Recycled aggregates through the cyclic loading triaxial compression tests. METHODS : The kinds of materials were tested; coarse grained subbase materials, refining aggregates base materials and recycled aggregates. RESULTS : The present study aims to figure out the resilient modulus of paving materials containing Recycled aggregates through the cyclic loading triaxial compression tests. CONCLUSIONS : The test results revealed that the engineering properties of the recycled aggregates were more excellent than the those of others.

The difference in phase and amplitude of ground motions recorded in different locations is generally known as spatial variation of seismic ground motions. This study focuses on the effects of spatial variation of earthquake ground motion on responses of adjacent buildings. The adjacent frame buildings are modeled considering soil-structure interaction (SSI) so that all the buildings can have interaction with each other under non-uniform ground motions. Based on Fast Fourier Transformation, spatially correlated non-uniform ground motions are generated compatible with known spectrum density function at different locations. Numerical analyses are carried out and the results are presented in terms of related parameters affecting the structural response using three different types of soil site classes. The results show that the effects of ground motion spatial variation are different for different site classes. The effect is more significant on rock site rather than clay site.