On Present State of Demand and Supply for Aggregates Produced in Kinki Region, and Drying Shrinkage of Mortars Produced with the Aggregate : Report by Kinki Chapter "Research Committee on Aggregates for Performance Evaluation-concrete"

Abstract

In our Kinki chapter, the authors have been working in research and experiment group respectively under the committee above-mentioned. In research group, the authors 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.近畿支部では，標記委員会を設置し，調査部会と試験研究部会の2つの部会に分かれ活動を行ってきた。調査部会では，近畿支部管内の骨材の需要と供給の現況を整理した。試験研究部会では，骨材の種類や微粒分がモルタルの乾燥収縮に影響を与えること，微粒分の影響については，ペースト体積の増加を考慮する必要があることを示した。さらに，複合モデルへの骨材の入力物性値を簡便に推定する方法についても検討した。