“Recommendation for Mix Design and Construction of Self-Compacting Concrete” was published by Concrete Committee of Japan Society of Civil Engineers in March 2012. It is a revised edition of “Recommendation for Self-Compacting Concrete” published in 1998. The revised edition contains “General Requirements”, “Mix-design Standards”, “Production and Construction Standards”, “Inspection Standards”, “Testing Methods” and “Material Data”.

View full abstract

The present Structural Eurocodes have been stipulated and have influenced greatly on not only Japanese technical standards but also ISO codes. Due to the European harmonization process, all traditional national standards in conflict to Eurocodes have already to be withdrawn. Public clients or agencies have also replaced their own technical specifications when purchasing construction products or services after April 1^st 2010. Histories, systems and contents of the present Eurocodes are described briefly at first and then some fundamental plans and concepts of Future Structural Eurocodes are described not only the four key points of Maintenance, Harmonization, Further development, and Promotion but also the Sustainability added in the Construction Products Regulation which Regulation is a highest level legislation among European Union legal systems.

View full abstract

In our Kinki chapter, we have been working in research and experiment group respectively under the committee above-mentioned. In research group, we organized present state of demand and supply for aggregates produced in Kinki region. In experiment group a fact that types and fine particles of aggregate will affect drying shrinkage of mortar and a fact that the increase in paste volume should be considered as to effect of fine particles were expressed. Additionally, simple method of presuming input property values of aggregates for composite model was also under examination.

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract