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process, based on electrochemical techniques in molten salts gave good results with metals such as Mo and Pb. Studies of other filling materials, such as carbon, are currently in progress. AcknowledgmentThis work was supported by GEC Alsthom Neyrpic Company. The Soci6t6 Nouvelle M~tallisation Industrie Company is also acknowledged for providing the ZrO2-Y2Q ceramic coatings.

Stress has been measured in Al-Sc layers with different Sc compositions. Stress at room temperature after sintering at 450°C decreases with the increase of Sc concentration and reaches 62 MPa at Sc concentration of 0.3%. This stress level is much lower than of 327 MPa in the Al-1%Si-0.5%Cu layer. The mean time of failure is 6.3×106 h in an Al-0.15%Sc layer. This time is seven times longer than that in the Al-1%Si-0.5%Cu layer. Therefore, Al-Sc is a promising prospect as an interconnection layer for quarter-micron devices.

This paper presents the design of an 80-story reinforced concrete (RC) high-rise building using 200 MPa ultra-high-strength concrete. Static nonlinear push over analyses, Level-1 and Level-2 nonlinear earthquake response analyses and nonlinear wind response analyses were carried out. Based on the three-dimensional static nonlinear analyses of the building subjected to design earthquake loading in two principal directions, the obtained maximum axial load ratio for the first story columns of 200 MPa compressive strength concrete were 0.53 and 0.48, respectively, at the ultimate limit state, which meets the design criterion based on the allowable compressive stress of concrete. The maximum story drift angle obtained under the synthetic wave motion at the construction site was smaller than the design limiting value of 1/100. While yield hinges developed only in some of the short beams, no yield hinge in columns was observed. The maximum ductility of 1.28 obtained in the beams is lower than the design limiting value of 4.0. The maximum story shear force for the level-2 wind load was almost half that of the level-2 earthquake load when using the lumped-mass model. The analyses confirmed that the use of 200 MPa concrete enables structural designers to provide the member sections with adequate sizes comparable to that of ordinary high-rise RC buildings. The analytical results showed that the performance of the building satisfies the design criteria for serviceability limits, design limits and ultimate limits.

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