JIS A 5031 has been stipulated for a use of Melt-solidified slag aggregate for concrete derived from municipal solid waste and sewage sludge. Production systems and qualities of Melt-solidified slag aggregate are firstly reported. Some properties of concrete with Melt-solidified slag aggregate are also reported from research works. Through some contents of JCI standard, TR A 0016, JIS A 5031, trends of Melt-solidified slag aggregate for concrete are described.

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In conventional visual inspection after an earthquake, degree of damage in RC buildings is diagnosed from cracking and crushing condition in concrete. If the residual and maximum story drifts can be informed, it is effective to shorten the time for inspection and to resume business and living rapidly. We have developed the displacement sensor, whose maximum, minimum and cumulative displacements can be memorized. These data can be transferred to the wireless data reader, if the reader comes close to the transmitter. At the same time, signal light inform the simple diagnosis results in 3 levels (red, yellow and green). In this report, The threshold value (story drift) for diagnosis is investigated by case study using earthquake response analysis.

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Seismic risk is applied to judgment of efficient seismic measures and earthquake disaster prevention, because the seismic damage can be described as an amount of loss directly. This report outlines a definition of seismic risk and the seismic risk estimation method. Especially, the methods of evaluating a seismic fragility curve and a damage function are shown for reinforced concrete structures. As the application example, the building and the civil engineering facilities are adopted, and then risk assessment procedures are introduced.

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[in Japanese]

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[in Japanese]

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[in Japanese]

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